Methamphetamine

Generic name: Pronounced as (meth'' am fet' a meen)
Brand names
  • Desoxyn®
Click on drug name to hear pronunciation

Medical Content Reviewed By HelloPharmacist Staff

Last Revised - 06/15/2017

Methamphetamine can be habit-forming. Do not take a larger dose, take it more often, or take it for a longer time than prescribed by your doctor. Methamphetamine should only be taken for a short period (e.g., a few weeks) when used for weight loss. However, if you take too much methamphetamine you may find that the medication no longer controls your symptoms, you may feel a need to take large amounts of the medication, and you may experience symptoms such as rash, difficulty falling asleep or staying asleep, irritability, hyperactivity, and unusual changes in your personality or behavior. Overusing methamphetamine may also cause serious heart problems or sudden death.

Tell your doctor if you or anyone in your family drinks or has ever drunk large amounts of alcohol, uses or has ever used street drugs, or has overused prescription medications. Your doctor will probably not prescribe methamphetamine for you.

Do not stop taking methamphetamine without talking to your doctor, especially if you have overused the medication. Your doctor will probably decrease your dose gradually and monitor you carefully during this time. You may experience depression and extreme tiredness if you suddenly stop taking methamphetamine after overusing it.

Do not sell, give away, or let anyone else take your medication. Selling or giving away methamphetamine is against the law and may harm others. Store methamphetamine in a safe place so that no one else can take it accidentally or on purpose. Keep track of how many tablets are left so you will know if any are missing.

Your doctor or pharmacist will give you the manufacturer's patient information sheet (Medication Guide) when you begin treatment with methamphetamine and each time you refill your prescription. Read the information carefully and ask your doctor or pharmacist if you have any questions. You can also visit the Food and Drug Administration (FDA) website (http://www.fda.gov/Drugs/DrugSafety/ucm085729.htm) or the manufacturer's website to obtain the Medication Guide.

Methamphetamine is used as part of a treatment program to control symptoms of attention deficit hyperactivity disorder (ADHD; more difficulty focusing, controlling actions, and remaining still or quiet than other people who are the same age) in children. Methamphetamine is also used for a limited period of time (a few weeks) along with a reduced calorie diet and an exercise plan for weight loss in obese people unable to lose weight. Methamphetamine is in a class of medications called central nervous system stimulants. It works by changing the amounts of certain natural substances in the brain.

Methamphetamine comes as a tablet to take by mouth. If your child is taking methamphetamine for ADHD, it is usually taken one or two times daily. If you are taking methamphetamine for weight management, it is usually taken 30 minutes before meal(s). This medication may cause difficulty falling asleep or staying asleep if it is taken in the evening. Take methamphetamine at around the same time(s) every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take methamphetamine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

If your child is taking methamphetamine for ADHD, the doctor will probably start the child on a low dose and gradually increase the dose, not more often than once every week. The doctor may stop methamphetamine treatment from time to time to see if the medication is still needed. Follow these directions carefully.

If you are taking methamphetamine to lose weight, the doctor will maintain you on the lowest dose possible. Tolerance to the weight loss effect may develop within a few weeks, making this medication less effective. When this occurs, the doctor may stop the medication.

Methamphetamine helps to control ADHD but does not cure this condition. Continue to take methamphetamine even if you feel well. Do not stop taking methamphetamine without talking to your doctor.

Methamphetamine should not be used to treat excessive tiredness.

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.

Before taking methamphetamine,

  • tell your doctor and pharmacist if you are allergic to methamphetamine, other stimulant medications such as amphetamine, benzphetamine, dextroamphetamine (Dexedrine, in Adderall), lisdexamfetamine (Vyvanse), any other medications, or any of the ingredients in methamphetamine tablets. Ask your pharmacist for a list of the ingredients.

  • tell your doctor if you are taking the following medications or have stopped taking them in the past 14 days: monoamine oxidase (MAO) inhibitors including isocarboxazid (Marplan), linezolid (Zyvox), methylene blue, phenelzine (Nardil), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate). If you stop taking methamphetamine, you should wait at least 14 days before you start to take an MAO inhibitor.

  • tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, and herbal products you are taking. Be sure to mention any of the following: acetazolamide (Diamox); ammonium chloride; ascorbic acid (Vitamin C); fentanyl (Actiq, Duragesic, Subsys, others); insulin; lithium (Lithobid); medications for high blood pressure; methenamine (Hiprex, Urex); medications for migraine headaches such as almotriptan (Axert), eletriptan (Relpax), frovatriptan (Frova), naratriptan (Amerge), rizatriptan (Maxalt), sumatriptan (Imitrex, in Treximet), and zolmitriptan (Zomig); omeprazole (Prilosec); phenothiazine medications for mental illness or nausea such as chlorpromazine, fluphenazine, prochlorperazine (Compro, Procomp), promethazine (Promethegan), thioridazine, or trifluoperazine; quinidine (in Nuedexta); reserpine; ritonavir (Norvir, in Kaletra); certain medications for seizures such as ethosuximide (Zarontin), phenobarbital, and phenytoin (Dilantin, Phenytek); selective serotonin-reuptake inhibitors such as citalopram (Celexa), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem, in Symbyax), fluvoxamine (Luvox), paroxetine (Brisdelle, Prozac, Pexeva), and sertraline (Zoloft); serotonin and norepinephrine reuptake inhibitors such as desvenlafaxine (Khedezla, Pristiq), duloxetine (Cymbalta), milnacipran (Savella), and venlafaxine (Effexor); sodium bicarbonate (Arm and Hammer Baking Soda, Soda Mint); sodium phosphate; tramadol; or tricyclic antidepressants ('mood elevators') such as desipramine (Norpramin) or protriptyline (Vivactil). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

  • tell your doctor what herbal products you are taking, especially St. John's wort and tryptophan or nutritional supplements you are taking including glutamic acid (L-glutamine).

  • tell your doctor if you have glaucoma (increased pressure in the eye that may cause vision loss), hypertension (high blood pressure), hyperthyroidism (condition in which there is too much thyroid hormone in the body), feelings of anxiety, tension, or agitation, or heart or blood vessel disease. Your doctor will probably tell you not to take methamphetamine.

  • tell your doctor if anyone in your family has or has ever had an irregular heartbeat or has died suddenly. Also tell your doctor if you have recently had a heart attack, and if you have or have ever had a heart defect, an irregular heartbeat, or other heart problems. Your doctor will examine you to see if your heart and blood vessels are healthy. Your doctor will probably tell you not to take methamphetamine if you have a heart condition or if there is a high risk that you may develop a heart condition.

  • tell your doctor if you or anyone in your family has or has ever had depression, bipolar disorder (mood that changes from depressed to abnormally excited), or mania (frenzied, abnormally excited mood), facial or motor tics (repeated uncontrollable movements), verbal tics (repetition of sounds or words that is hard to control) or Tourette's syndrome (a condition characterized by the need to perform repeated motions or to repeat sounds or words), or has thought about or attempted suicide. Also tell your doctor if you have or have ever had mental illness, seizures, diabetes, or an abnormal electroencephalogram (EEG; test that measures electrical activity in the brain). If your child is taking methamphetamine to treat ADHD, tell your child's doctor if your child has recently experienced unusual stress.

  • tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. If you become pregnant while taking methamphetamine, call your doctor. Do not breastfeed while taking methamphetamine.

  • you should know that methamphetamine may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.

  • you should know that methamphetamine should be used as part of a total treatment program for ADHD, which may include counseling and special education. Make sure to follow all of your doctor's and/or therapist's instructions.

  • you should know that methamphetamine may cause sudden death in children and teenagers, especially children and teenagers who have heart defects or serious heart problems. This medication also may cause sudden death, heart attack, or stroke in adults, especially adults with heart defects or serious heart problems. Call your or your child's doctor right away if you or your child has any signs of heart problems while taking this medication including: chest pain, shortness of breath, or fainting.

Unless your doctor tells you otherwise, continue your normal diet.

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

  • Methamphetamine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

    • restlessness

    • upset stomach

    • constipation

    • dry mouth

    • unpleasant taste

    • headache

    • weight loss

    • loss of appetite

    • itching

    • changes in sex drive or ability

    • difficulty falling asleep or staying asleep

  • Some side effects can be serious. If you experience any of these symptoms or those listed in the IMPORTANT WARNING section, stop taking methamphetamine and call your doctor immediately or get emergency medical treatment:

    • fast or pounding heartbeat

    • uncontrollable shaking of a part of your body

    • excessive tiredness

    • slow or difficult speech

    • seizures

    • motor or verbal tics

    • believing things that are not true

    • feeling unusually suspicious of others

    • hallucinating (seeing things or hearing voices that do not exist)

    • agitation, hallucinations (seeing things or hearing voices that do not exist), fever, sweating, confusion, fast heartbeat, shivering, severe muscle stiffness or twitching, loss of coordination, nausea, vomiting, or diarrhea

    • mania (frenzied or abnormally excited mood)

    • aggressive or hostile behavior

    • changes in vision or blurred vision

    • paleness or blue color of fingers or toes

    • pain, burning, or tingling in the hands or feet

    • unexplained wounds appearing on fingers or toes

  • Methamphetamine may slow children's growth or weight gain. Your child's doctor will watch his or her growth carefully. Talk to your child's doctor if you have concerns about your child's growth or weight gain while he or she is taking this medication. Talk to your child's doctor about the risks of giving methamphetamine to your child.

  • Methamphetamine may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.

  • If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online (http://www.fda.gov/Safety/MedWatch) or by phone (1-800-332-1088).

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from light, excess heat and moisture (not in the bathroom).

Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community. See the FDA's Safe Disposal of Medicines website (http://goo.gl/c4Rm4p) for more information if you do not have access to a take-back program.

It is important to keep all medication out of sight and reach of children as many containers (such as weekly pill minders and those for eye drops, creams, patches, and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away and out of their sight and reach. http://www.upandaway.org

In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at 911.

Symptoms of overdose may include the following:

  • fever

  • restlessness

  • uncontrollable shaking of a part of your body

  • confusion

  • fast breathing

  • aggressive behavior

  • tiredness

  • hallucinations (seeing things or hearing voices that do not exist)

  • panic

  • depression

  • irregular heartbeat

  • vomiting

  • nausea

  • diarrhea

  • stomach cramps

  • seizures

  • coma (loss of consciousness for a period of time)

Keep all appointments with your doctor.

Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking methamphetamine.

This prescription is not refillable. Be sure to schedule appointments with your doctor on a regular basis so that you do not run out of medication.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

Drug Interaction
Delavirdine Delavirdine The metabolism of Metamfetamine can be decreased when combined with Delavirdine.
Nevirapine Nevirapine The metabolism of Metamfetamine can be decreased when combined with Nevirapine.
Dolasetron Dolasetron The risk or severity of adverse effects can be increased when Dolasetron is combined with Metamfetamine.
Aminophylline Aminophylline The risk or severity of adverse effects can be increased when Metamfetamine is combined with Aminophylline.
Anagrelide Anagrelide The risk or severity of Tachycardia can be increased when Anagrelide is combined with Metamfetamine.
Calcium Carbonate Calcium Carbonate The serum concentration of Metamfetamine can be increased when it is combined with Calcium carbonate.
Candesartan Candesartan Metamfetamine may decrease the antihypertensive activities of Candesartan.
Cilostazol Cilostazol Cilostazol may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Diphenoxylate Diphenoxylate Metamfetamine may increase the analgesic activities of Diphenoxylate.
Estrogen and Progestin (Oral Contraceptives) Estrogen and Progestin (Oral Contraceptives) Conjugated estrogens may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Fenofibrate Fenofibrate Fenofibrate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Guanfacine Guanfacine The risk or severity of adverse effects can be increased when Guanfacine is combined with Metamfetamine.
Magnesium Hydroxide Magnesium Hydroxide The serum concentration of Metamfetamine can be increased when it is combined with Magnesium hydroxide.
Magnesium Oxide Magnesium Oxide The serum concentration of Metamfetamine can be increased when it is combined with Magnesium oxide.
Methylergonovine Methylergonovine Methylergometrine may increase the hypertensive and vasoconstricting activities of Metamfetamine.
Mycophenolate Mycophenolate Mycophenolic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Naratriptan Naratriptan The metabolism of Naratriptan can be decreased when combined with Metamfetamine.
Olsalazine Olsalazine Olsalazine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Paregoric Paregoric Metamfetamine may increase the analgesic activities of Morphine.
Penbutolol Penbutolol The therapeutic efficacy of Acebutolol can be decreased when used in combination with Metamfetamine.
Pentazocine Pentazocine Metamfetamine may increase the analgesic activities of Pentazocine.
Potassium Potassium Potassium cation may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Prednisone Prednisone Prednisone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ranitidine Ranitidine Metamfetamine may decrease the sedative and stimulatory activities of Ranitidine.
Reserpine Reserpine The serum concentration of Metamfetamine can be decreased when it is combined with Reserpine.
Rizatriptan Rizatriptan The metabolism of Rizatriptan can be decreased when combined with Metamfetamine.
Sumatriptan Sumatriptan The metabolism of Sumatriptan can be decreased when combined with Metamfetamine.
Tacrolimus Tacrolimus Tacrolimus may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tizanidine Tizanidine The risk or severity of adverse effects can be increased when Tizanidine is combined with Metamfetamine.
Zolmitriptan Zolmitriptan The metabolism of Zolmitriptan can be decreased when combined with Metamfetamine.
Ampicillin Injection Ampicillin Injection Ampicillin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Doxycycline Injection Doxycycline Injection Doxycycline may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Famotidine Injection Famotidine Injection Metamfetamine may decrease the sedative and stimulatory activities of Famotidine.
Fluconazole Injection Fluconazole Injection Fluconazole may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Foscarnet Injection Foscarnet Injection Foscarnet may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Hydromorphone Injection Hydromorphone Injection Metamfetamine may increase the analgesic activities of Hydromorphone.
Levofloxacin Injection Levofloxacin Injection Levofloxacin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Meperidine Injection Meperidine Injection The therapeutic efficacy of Meperidine can be increased when used in combination with Metamfetamine.
Metoclopramide Injection Metoclopramide Injection The risk or severity of sedation can be increased when Metoclopramide is combined with Metamfetamine.
Morphine Injection Morphine Injection Metamfetamine may increase the analgesic activities of Morphine.
Pamidronate Injection Pamidronate Injection Pamidronic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Vancomycin Injection Vancomycin Injection Metamfetamine may decrease the excretion rate of Vancomycin which could result in a higher serum level.
Altretamine Altretamine Amphetamine may increase the hypertensive activities of Metamfetamine.
Cefuroxime Cefuroxime Cefuroxime may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cyclosporine Cyclosporine The metabolism of Metamfetamine can be decreased when combined with Cyclosporine.
Ondansetron Ondansetron The risk or severity of adverse effects can be increased when Ondansetron is combined with Metamfetamine.
Granisetron Granisetron The risk or severity of adverse effects can be increased when Granisetron is combined with Metamfetamine.
Torsemide Torsemide Torasemide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Olanzapine Olanzapine Metamfetamine may decrease the sedative and stimulatory activities of Olanzapine.
Alosetron Alosetron The risk or severity of adverse effects can be increased when Alosetron is combined with Metamfetamine.
Entacapone Entacapone The risk or severity of adverse effects can be increased when Entacapone is combined with Metamfetamine.
Eprosartan Eprosartan Metamfetamine may decrease the antihypertensive activities of Eprosartan.
Hydroxychloroquine Hydroxychloroquine The metabolism of Metamfetamine can be decreased when combined with Hydroxychloroquine.
Meloxicam Meloxicam Meloxicam may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Oxcarbazepine Oxcarbazepine The risk or severity of adverse effects can be increased when Oxcarbazepine is combined with Metamfetamine.
Pantoprazole Pantoprazole Pantoprazole may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Telmisartan Telmisartan Metamfetamine may decrease the antihypertensive activities of Telmisartan.
Temozolomide Temozolomide Temozolomide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Zaleplon Zaleplon Zaleplon may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Anakinra Anakinra The metabolism of Metamfetamine can be increased when combined with Anakinra.
Desloratadine Desloratadine Metamfetamine may decrease the sedative and stimulatory activities of Desloratadine.
Linezolid Linezolid The risk or severity of hypertension can be increased when Linezolid is combined with Metamfetamine.
Trimipramine Trimipramine Metamfetamine may decrease the sedative and stimulatory activities of Trimipramine.
Etanercept Injection Etanercept Injection The metabolism of Metamfetamine can be increased when combined with Etanercept.
Glycopyrrolate Glycopyrrolate Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Glycopyrronium.
Modafinil Modafinil The risk or severity of hypertension can be increased when Metamfetamine is combined with Modafinil.
Perindopril Perindopril Perindopril may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tenofovir Tenofovir Tenofovir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Choline Magnesium Trisalicylate Choline Magnesium Trisalicylate Choline magnesium trisalicylate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Dutasteride Dutasteride The therapeutic efficacy of Dutasteride can be decreased when used in combination with Metamfetamine.
Epinephrine Injection Epinephrine Injection The therapeutic efficacy of Metamfetamine can be increased when used in combination with Epinephrine.
Eplerenone Eplerenone Eplerenone may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Escitalopram Escitalopram The risk or severity of serotonin syndrome can be increased when Metamfetamine is combined with Escitalopram.
Olmesartan Olmesartan Metamfetamine may decrease the antihypertensive activities of Olmesartan.
Zonisamide Zonisamide The risk or severity of adverse effects can be increased when Zonisamide is combined with Metamfetamine.
Adalimumab Injection Adalimumab Injection The metabolism of Metamfetamine can be increased when combined with Adalimumab.
Aripiprazole Aripiprazole Metamfetamine may decrease the sedative and stimulatory activities of Aripiprazole.
Atomoxetine Atomoxetine The risk or severity of hypertension can be increased when Atomoxetine is combined with Metamfetamine.
Dexmethylphenidate Dexmethylphenidate The risk or severity of adverse effects can be increased when Metamfetamine is combined with Dexmethylphenidate.
Teriparatide Injection Teriparatide Injection The risk or severity of adverse effects can be increased when Metamfetamine is combined with Teriparatide.
Atazanavir Atazanavir Atazanavir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Almotriptan Almotriptan The metabolism of Almotriptan can be decreased when combined with Metamfetamine.
Eletriptan Eletriptan The risk or severity of adverse effects can be increased when Eletriptan is combined with Metamfetamine.
Mefloquine Mefloquine The metabolism of Metamfetamine can be decreased when combined with Mefloquine.
Alfuzosin Alfuzosin The therapeutic efficacy of Alfuzosin can be decreased when used in combination with Metamfetamine.
Emtricitabine Emtricitabine Emtricitabine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Memantine Memantine Memantine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tegaserod Tegaserod The metabolism of Metamfetamine can be decreased when combined with Tegaserod.
Tadalafil Tadalafil Tadalafil may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Frovatriptan Frovatriptan The risk or severity of adverse effects can be increased when Frovatriptan is combined with Metamfetamine.
Progesterone Progesterone The metabolism of Metamfetamine can be decreased when combined with Progesterone.
Apomorphine Injection Apomorphine Injection The risk or severity of adverse effects can be increased when Apomorphine is combined with Metamfetamine.
Infliximab Injection Infliximab Injection The metabolism of Metamfetamine can be increased when combined with Infliximab.
Protriptyline Protriptyline The therapeutic efficacy of Protriptyline can be increased when used in combination with Metamfetamine.
Duloxetine Duloxetine The metabolism of Duloxetine can be decreased when combined with Metamfetamine.
Tinidazole Tinidazole Tinidazole may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Trospium Trospium Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Trospium.
Bosentan Bosentan Metamfetamine may decrease the antihypertensive activities of Bosentan.
Cefditoren Cefditoren Cefdinir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cinacalcet Cinacalcet The metabolism of Metamfetamine can be decreased when combined with Cinacalcet.
Cyanocobalamin Injection Cyanocobalamin Injection Hydroxocobalamin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Erlotinib Erlotinib The metabolism of Metamfetamine can be decreased when combined with Erlotinib.
Eszopiclone Eszopiclone The risk or severity of CNS depression can be increased when Metamfetamine is combined with Eszopiclone.
Ganciclovir Ganciclovir Ganciclovir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ribavirin Ribavirin Ribavirin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Solifenacin Solifenacin Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Solifenacin.
Valganciclovir Valganciclovir Metamfetamine may decrease the excretion rate of Valganciclovir which could result in a higher serum level.
Adefovir Adefovir Adefovir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Dextroamphetamine Dextroamphetamine Amphetamine may increase the hypertensive activities of Metamfetamine.
Peginterferon Alfa-2b (PEG-Intron) Peginterferon Alfa-2b (PEG-Intron) The metabolism of Metamfetamine can be decreased when combined with Peginterferon alfa-2b.
Sodium Oxybate Sodium Oxybate Sodium oxybate may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Isocarboxazid Isocarboxazid Isocarboxazid may increase the hypertensive activities of Metamfetamine.
Ramelteon Ramelteon The risk or severity of adverse effects can be increased when Ramelteon is combined with Metamfetamine.
Darifenacin Darifenacin The metabolism of Metamfetamine can be decreased when combined with Darifenacin.
Fentanyl Fentanyl The risk or severity of adverse effects can be increased when Fentanyl is combined with Metamfetamine.
Pregabalin Pregabalin The therapeutic efficacy of Metamfetamine can be increased when used in combination with Pregabalin.
Phenylephrine Phenylephrine The metabolism of Phenylephrine can be decreased when combined with Metamfetamine.
Tipranavir Tipranavir The metabolism of Metamfetamine can be decreased when combined with Tipranavir.
Felbamate Felbamate The risk or severity of adverse effects can be increased when Felbamate is combined with Metamfetamine.
Ranolazine Ranolazine The serum concentration of Metamfetamine can be increased when it is combined with Ranolazine.
Abatacept Injection Abatacept Injection The metabolism of Metamfetamine can be increased when combined with Abatacept.
Rasagiline Rasagiline Rasagiline may increase the hypertensive activities of Metamfetamine.
Imatinib Imatinib The metabolism of Metamfetamine can be decreased when combined with Imatinib.
Sitagliptin Sitagliptin Sitagliptin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Varenicline Varenicline Varenicline may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Gefitinib Gefitinib The metabolism of Metamfetamine can be decreased when combined with Gefitinib.
Albuterol Albuterol Salbutamol may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Paliperidone Paliperidone The therapeutic efficacy of Paliperidone can be decreased when used in combination with Metamfetamine.
Bortezomib Bortezomib The metabolism of Metamfetamine can be decreased when combined with Bortezomib.
Clofarabine Injection Clofarabine Injection Clofarabine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Lubiprostone Lubiprostone Lubiprostone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Primaquine Primaquine The metabolism of Metamfetamine can be decreased when combined with Primaquine.
Aliskiren Aliskiren Metamfetamine may decrease the antihypertensive activities of Aliskiren.
Pemetrexed Injection Pemetrexed Injection Metamfetamine may decrease the excretion rate of Pemetrexed which could result in a higher serum level.
Dimenhydrinate Dimenhydrinate Metamfetamine may decrease the sedative and stimulatory activities of Dimenhydrinate.
Lisdexamfetamine Lisdexamfetamine The risk or severity of serotonin syndrome can be increased when Lisdexamfetamine is combined with Metamfetamine.
Nabilone Nabilone Nabilone may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Sorafenib Sorafenib The metabolism of Metamfetamine can be decreased when combined with Sorafenib.
Dronabinol Dronabinol Dronabinol may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Levocetirizine Levocetirizine Metamfetamine may decrease the sedative and stimulatory activities of Levocetirizine.
Pegaptanib Injection Pegaptanib Injection Metamfetamine may decrease the excretion rate of Pegaptanib which could result in a higher serum level.
Mexiletine Mexiletine The metabolism of Metamfetamine can be decreased when combined with Mexiletine.
Armodafinil Armodafinil The risk or severity of hypertension can be increased when Metamfetamine is combined with Armodafinil.
Azacitidine Injection Azacitidine Injection Azacitidine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Temsirolimus Temsirolimus The metabolism of Metamfetamine can be decreased when combined with Temsirolimus.
Lenalidomide Lenalidomide Lenalidomide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nilotinib Nilotinib The metabolism of Metamfetamine can be decreased when combined with Nilotinib.
Budesonide Budesonide Budesonide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Desmopressin Desmopressin Desmopressin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
OnabotulinumtoxinA Injection OnabotulinumtoxinA Injection The risk or severity of adverse effects can be increased when Botulinum toxin type A is combined with Metamfetamine.
RimabotulinumtoxinB Injection RimabotulinumtoxinB Injection The risk or severity of adverse effects can be increased when Botulinum Toxin Type B is combined with Metamfetamine.
Doripenem Injection Doripenem Injection Metamfetamine may decrease the excretion rate of Doripenem which could result in a higher serum level.
Arsenic Trioxide Injection Arsenic Trioxide Injection Arsenic trioxide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Desvenlafaxine Desvenlafaxine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Desvenlafaxine.
Cevimeline Cevimeline Cevimeline may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nebivolol Nebivolol The therapeutic efficacy of Nebivolol can be decreased when used in combination with Metamfetamine.
Flecainide Flecainide The metabolism of Flecainide can be decreased when combined with Metamfetamine.
Certolizumab Injection Certolizumab Injection The metabolism of Metamfetamine can be increased when combined with Certolizumab pegol.
Daptomycin Injection Daptomycin Injection Daptomycin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Methylnaltrexone Injection Methylnaltrexone Injection Metamfetamine may decrease the excretion rate of Methylnaltrexone which could result in a higher serum level.
Rufinamide Rufinamide The risk or severity of adverse effects can be increased when Rufinamide is combined with Metamfetamine.
Silodosin Silodosin The therapeutic efficacy of Silodosin can be decreased when used in combination with Metamfetamine.
Midazolam Midazolam The risk or severity of adverse effects can be increased when Midazolam is combined with Metamfetamine.
Naltrexone Injection Naltrexone Injection Metamfetamine may increase the analgesic activities of Naltrexone.
Dexrazoxane Injection Dexrazoxane Injection Dexrazoxane may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Milnacipran Milnacipran The risk or severity of adverse effects can be increased when Metamfetamine is combined with Milnacipran.
Plerixafor Injection Plerixafor Injection Metamfetamine may decrease the excretion rate of Plerixafor which could result in a higher serum level.
Sodium Phosphate Sodium Phosphate The serum concentration of Metamfetamine can be decreased when it is combined with Sodium phosphate, monobasic.
Fesoterodine Fesoterodine Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Fesoterodine.
Betaxolol Betaxolol The therapeutic efficacy of Betaxolol can be decreased when used in combination with Metamfetamine.
Iloperidone Iloperidone Metamfetamine may decrease the sedative and stimulatory activities of Iloperidone.
Prasugrel Prasugrel Metamfetamine may decrease the excretion rate of Prasugrel which could result in a higher serum level.
Lacosamide Lacosamide The risk or severity of adverse effects can be increased when Metamfetamine is combined with Lacosamide.
Everolimus Everolimus The metabolism of Metamfetamine can be decreased when combined with Everolimus.
Tolvaptan (low blood sodium) Tolvaptan (low blood sodium) Tolvaptan may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Dronedarone Dronedarone The metabolism of Dronedarone can be decreased when combined with Metamfetamine.
AbobotulinumtoxinA Injection AbobotulinumtoxinA Injection The risk or severity of adverse effects can be increased when Botulinum toxin type A is combined with Metamfetamine.
Pralatrexate Injection Pralatrexate Injection Metamfetamine may decrease the excretion rate of Pralatrexate which could result in a higher serum level.
Palonosetron Injection Palonosetron Injection The risk or severity of adverse effects can be increased when Palonosetron is combined with Metamfetamine.
Saxagliptin Saxagliptin Metamfetamine may decrease the excretion rate of Saxagliptin which could result in a higher serum level.
Telavancin Injection Telavancin Injection Metamfetamine may decrease the excretion rate of Telavancin which could result in a higher serum level.
Tapentadol Tapentadol Tapentadol may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Topotecan Topotecan Topotecan may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Golimumab Injection Golimumab Injection The metabolism of Metamfetamine can be increased when combined with Golimumab.
Pazopanib Pazopanib The metabolism of Pazopanib can be decreased when combined with Metamfetamine.
Asenapine Asenapine Metamfetamine may decrease the sedative and stimulatory activities of Asenapine.
Vigabatrin Vigabatrin The risk or severity of adverse effects can be increased when Vigabatrin is combined with Metamfetamine.
Oxymorphone Oxymorphone Metamfetamine may increase the analgesic activities of Oxymorphone.
Tocilizumab Injection Tocilizumab Injection The metabolism of Metamfetamine can be increased when combined with Tocilizumab.
Dalfampridine Dalfampridine Metamfetamine may decrease the excretion rate of Dalfampridine which could result in a higher serum level.
IncobotulinumtoxinA Injection IncobotulinumtoxinA Injection The risk or severity of adverse effects can be increased when Botulinum toxin type A is combined with Metamfetamine.
Ceftaroline Injection Ceftaroline Injection Ceftaroline fosamil may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Lurasidone Lurasidone The therapeutic efficacy of Lurasidone can be decreased when used in combination with Metamfetamine.
Acetaminophen Injection Acetaminophen Injection Acetaminophen may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Vilazodone Vilazodone The metabolism of Vilazodone can be decreased when combined with Metamfetamine.
Ipilimumab Injection Ipilimumab Injection Metamfetamine may decrease the excretion rate of Ipilimumab which could result in a higher serum level.
Denileukin Diftitox Injection Denileukin Diftitox Injection Aldesleukin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Terbutaline Injection Terbutaline Injection Terbutaline may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Roflumilast Roflumilast Metamfetamine may decrease the excretion rate of Roflumilast which could result in a higher serum level.
Rilpivirine Rilpivirine The metabolism of Metamfetamine can be decreased when combined with Rilpivirine.
Potassium Iodide Potassium Iodide The risk or severity of adverse effects can be increased when Metamfetamine is combined with Potassium Iodide.
Abiraterone Abiraterone The metabolism of Metamfetamine can be decreased when combined with Abiraterone.
Rivaroxaban Rivaroxaban Metamfetamine may decrease the excretion rate of Rivaroxaban which could result in a higher serum level.
Ruxolitinib Ruxolitinib Metamfetamine may decrease the excretion rate of Ruxolitinib which could result in a higher serum level.
Clobazam Clobazam The metabolism of Metamfetamine can be decreased when combined with Clobazam.
Vemurafenib Vemurafenib The metabolism of Metamfetamine can be decreased when combined with Vemurafenib.
Deferiprone Deferiprone Metamfetamine may decrease the excretion rate of Deferiprone which could result in a higher serum level.
Cabergoline Cabergoline Cabergoline may increase the hypertensive and vasoconstricting activities of Metamfetamine.
Naloxone Injection Naloxone Injection Naloxone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ambrisentan Ambrisentan Metamfetamine may decrease the antihypertensive activities of Ambrisentan.
Fondaparinux Injection Fondaparinux Injection Fondaparinux may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ezogabine Ezogabine The risk or severity of adverse effects can be increased when Tiagabine is combined with Metamfetamine.
Enzalutamide Enzalutamide Metamfetamine may decrease the excretion rate of Enzalutamide which could result in a higher serum level.
Mirabegron Mirabegron The metabolism of Mirabegron can be decreased when combined with Metamfetamine.
Teduglutide Injection Teduglutide Injection Metamfetamine may decrease the excretion rate of Teduglutide which could result in a higher serum level.
Alogliptin Alogliptin Metamfetamine may decrease the excretion rate of Alogliptin which could result in a higher serum level.
Ponatinib Ponatinib The metabolism of Ponatinib can be decreased when combined with Metamfetamine.
Pomalidomide Pomalidomide The risk or severity of adverse effects can be increased when Metamfetamine is combined with Pomalidomide.
Canagliflozin Canagliflozin Metamfetamine may increase the excretion rate of Canagliflozin which could result in a lower serum level and potentially a reduction in efficacy.
Methazolamide Methazolamide Methazolamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ospemifene Ospemifene The metabolism of Metamfetamine can be decreased when combined with Ospemifene.
Trametinib Trametinib Metamfetamine may decrease the excretion rate of Trametinib which could result in a higher serum level.
Levomilnacipran Levomilnacipran The risk or severity of adverse effects can be increased when Metamfetamine is combined with Levomilnacipran.
Ertapenem Injection Ertapenem Injection Ertapenem may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Vortioxetine Vortioxetine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Vortioxetine.
Perampanel Perampanel Perampanel may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Ibrutinib Ibrutinib The metabolism of Ibrutinib can be decreased when combined with Metamfetamine.
Ketorolac Injection Ketorolac Injection Ketorolac may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sofosbuvir Sofosbuvir Metamfetamine may decrease the excretion rate of Sofosbuvir which could result in a higher serum level.
Dapagliflozin Dapagliflozin Metamfetamine may increase the excretion rate of Dapagliflozin which could result in a lower serum level and potentially a reduction in efficacy.
Apremilast Apremilast The metabolism of Metamfetamine can be increased when combined with Apremilast.
Droxidopa Droxidopa The therapeutic efficacy of Metamfetamine can be increased when used in combination with Droxidopa.
Siltuximab Injection Siltuximab Injection The metabolism of Metamfetamine can be increased when combined with Siltuximab.
Eslicarbazepine Eslicarbazepine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Eslicarbazepine.
Testosterone Injection Testosterone Injection Testosterone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Oritavancin Injection Oritavancin Injection The metabolism of Metamfetamine can be decreased when combined with Oritavancin.
Hydrocodone Hydrocodone Hydrocodone may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Suvorexant Suvorexant Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Suvorexant.
Edoxaban Edoxaban Metamfetamine may decrease the excretion rate of Edoxaban which could result in a higher serum level.
Tasimelteon Tasimelteon The risk or severity of adverse effects can be increased when Metamfetamine is combined with Tasimelteon.
Riociguat Riociguat Metamfetamine may decrease the antihypertensive activities of Riociguat.
Secukinumab Injection Secukinumab Injection The metabolism of Metamfetamine can be increased when combined with Secukinumab.
Risperidone Injection Risperidone Injection Metamfetamine may decrease the sedative and stimulatory activities of Risperidone.
Lenvatinib Lenvatinib The metabolism of Metamfetamine can be decreased when combined with Lenvatinib.
Naloxegol Naloxegol The metabolism of Metamfetamine can be decreased when combined with Naloxegol.
Panobinostat Panobinostat The metabolism of Metamfetamine can be decreased when combined with Panobinostat.
Haloperidol Injection Haloperidol Injection The therapeutic efficacy of Metamfetamine can be decreased when used in combination with Haloperidol.
Amiloride Amiloride Amiloride may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Macitentan Macitentan Metamfetamine may decrease the excretion rate of Macitentan which could result in a higher serum level.
Flibanserin Flibanserin The risk or severity of adverse effects can be increased when Metamfetamine is combined with Flibanserin.
Rolapitant Rolapitant The metabolism of Metamfetamine can be decreased when combined with Rolapitant.
Brexpiprazole Brexpiprazole The therapeutic efficacy of Brexpiprazole can be decreased when used in combination with Metamfetamine.
Ziprasidone Injection Ziprasidone Injection The risk or severity of adverse effects can be increased when Metamfetamine is combined with Ziprasidone.
Cariprazine Cariprazine Metamfetamine may decrease the sedative and stimulatory activities of Cariprazine.
Penicillin G Procaine Injection Penicillin G Procaine Injection Metamfetamine may decrease the excretion rate of Procaine benzylpenicillin which could result in a higher serum level.
Eluxadoline Eluxadoline Metamfetamine may increase the analgesic activities of Eluxadoline.
Trabectedin Injection Trabectedin Injection The metabolism of Trabectedin can be decreased when combined with Metamfetamine.
Ixazomib Ixazomib Metamfetamine may decrease the excretion rate of Ixazomib which could result in a higher serum level.
Lesinurad Lesinurad Metamfetamine may decrease the excretion rate of Lesinurad which could result in a higher serum level.
Amphotericin B Liposomal Injection Amphotericin B Liposomal Injection Amphotericin B may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Brivaracetam Injection Brivaracetam Injection The risk or severity of adverse effects can be increased when Metamfetamine is combined with Brivaracetam.
Cobicistat Cobicistat The metabolism of Metamfetamine can be decreased when combined with Cobicistat.
Midodrine Midodrine The risk or severity of hypertension can be increased when Midodrine is combined with Metamfetamine.
Selexipag Selexipag Metamfetamine may decrease the antihypertensive activities of Selexipag.
Pimavanserin Pimavanserin The risk or severity of adverse effects can be increased when Metamfetamine is combined with Pimavanserin.
Diphenhydramine Injection Diphenhydramine Injection Metamfetamine may decrease the sedative and stimulatory activities of Diphenhydramine.
Furosemide Injection Furosemide Injection Furosemide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Rucaparib Rucaparib The metabolism of Metamfetamine can be decreased when combined with Rucaparib.
Lixisenatide Injection Lixisenatide Injection Metamfetamine may decrease the excretion rate of Lixisenatide which could result in a higher serum level.
Parathyroid Hormone Injection Parathyroid Hormone Injection The risk or severity of adverse effects can be increased when Metamfetamine is combined with Parathyroid hormone.
Doxepin (Insomnia) Doxepin (Insomnia) Metamfetamine may decrease the sedative and stimulatory activities of Doxepin.
Deutetrabenazine Deutetrabenazine Metamfetamine may decrease the excretion rate of Deutetrabenazine which could result in a higher serum level.
Valbenazine Valbenazine Metamfetamine may decrease the excretion rate of Valbenazine which could result in a higher serum level.
Safinamide Safinamide Safinamide may increase the hypertensive activities of Metamfetamine.
Naldemedine Naldemedine Metamfetamine may decrease the excretion rate of Naldemedine which could result in a higher serum level.
Midostaurin Midostaurin The metabolism of Metamfetamine can be decreased when combined with Midostaurin.
L-glutamine L-glutamine The serum concentration of Metamfetamine can be decreased when it is combined with Glutamic acid.
Abaloparatide Injection Abaloparatide Injection The risk or severity of adverse effects can be increased when Metamfetamine is combined with Abaloparatide.
Enasidenib Enasidenib The metabolism of Metamfetamine can be decreased when combined with Enasidenib.
Benznidazole Benznidazole Metamfetamine may decrease the excretion rate of Benznidazole which could result in a higher serum level.
Delafloxacin Delafloxacin Metamfetamine may decrease the excretion rate of Delafloxacin which could result in a higher serum level.
Letermovir Letermovir The metabolism of Letermovir can be decreased when combined with Metamfetamine.
Tetrabenazine Tetrabenazine The metabolism of Tetrabenazine can be decreased when combined with Metamfetamine.
Ertugliflozin Ertugliflozin Ertugliflozin may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Buprenorphine Injection Buprenorphine Injection Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Buprenorphine.
Apalutamide Apalutamide Metamfetamine may decrease the excretion rate of Apalutamide which could result in a higher serum level.
Baricitinib Baricitinib Metamfetamine may decrease the excretion rate of Baricitinib which could result in a higher serum level.
Lofexidine Lofexidine The therapeutic efficacy of Metamfetamine can be increased when used in combination with Lofexidine.
Plazomicin Injection Plazomicin Injection Metamfetamine may decrease the excretion rate of Plazomicin which could result in a higher serum level.
Eliglustat Eliglustat The metabolism of Eliglustat can be decreased when combined with Metamfetamine.
Encorafenib Encorafenib The metabolism of Encorafenib can be decreased when combined with Metamfetamine.
Elagolix Elagolix The metabolism of Elagolix can be decreased when combined with Metamfetamine.
Eravacycline Injection Eravacycline Injection The metabolism of Eravacycline can be decreased when combined with Metamfetamine.
Tafenoquine Tafenoquine The metabolism of Tafenoquine can be decreased when combined with Metamfetamine.
Cannabidiol Cannabidiol The risk or severity of adverse effects can be increased when Cannabidiol is combined with Metamfetamine.
Dacomitinib Dacomitinib The metabolism of Metamfetamine can be decreased when combined with Dacomitinib.
Stiripentol Stiripentol The metabolism of Metamfetamine can be decreased when combined with Stiripentol.
Rifamycin Rifamycin The metabolism of Metamfetamine can be decreased when combined with Rifamycin.
Prucalopride Prucalopride Metamfetamine may decrease the excretion rate of Prucalopride which could result in a higher serum level.
Emapalumab-lzsg Injection Emapalumab-lzsg Injection The metabolism of Metamfetamine can be increased when combined with Emapalumab.
Siponimod Siponimod The risk or severity of hypertension can be increased when Metamfetamine is combined with Siponimod.
Acyclovir Ophthalmic Acyclovir Ophthalmic Acyclovir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Brexanolone Injection Brexanolone Injection The risk or severity of adverse effects can be increased when Metamfetamine is combined with Brexanolone.
Solriamfetol Solriamfetol The risk or severity of hypertension can be increased when Solriamfetol is combined with Metamfetamine.
Triclabendazole Triclabendazole The metabolism of Metamfetamine can be decreased when combined with Triclabendazole.
Istradefylline Istradefylline The metabolism of Istradefylline can be decreased when combined with Metamfetamine.
Pitolisant Pitolisant Metamfetamine may decrease the sedative and stimulatory activities of Pitolisant.
Fedratinib Fedratinib The metabolism of Metamfetamine can be decreased when combined with Fedratinib.
Phenytoin Injection Phenytoin Injection The therapeutic efficacy of Phenytoin can be decreased when used in combination with Metamfetamine.
Fosphenytoin Injection Fosphenytoin Injection The therapeutic efficacy of Fosphenytoin can be decreased when used in combination with Metamfetamine.
Lumateperone Lumateperone Lumateperone may decrease the stimulatory activities of Metamfetamine.
Lasmiditan Lasmiditan The risk or severity of serotonin syndrome can be increased when Metamfetamine is combined with Lasmiditan.
Selpercatinib Selpercatinib The risk or severity of hypertension can be increased when Metamfetamine is combined with Selpercatinib.
Lemborexant Lemborexant The risk or severity of adverse effects can be increased when Metamfetamine is combined with Lemborexant.
Fenfluramine Fenfluramine The risk or severity of serotonin syndrome can be increased when Fenfluramine is combined with Metamfetamine.
Naxitamab-gqgk Injection Naxitamab-gqgk Injection The risk or severity of hypertension can be increased when Metamfetamine is combined with Naxitamab.
Progestin-Only (drospirenone) Oral Contraceptives Progestin-Only (drospirenone) Oral Contraceptives Drospirenone may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Viloxazine Viloxazine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Viloxazine.
Tobramycin Injection Tobramycin Injection Tobramycin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Theophylline Theophylline The metabolism of Theophylline can be decreased when combined with Metamfetamine.
Fenoprofen Fenoprofen Fenoprofen may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Indomethacin Indomethacin Indomethacin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Mefenamic Acid Mefenamic Acid Mefenamic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Naproxen Naproxen Naproxen may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tolmetin Tolmetin Tolmetin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sulindac Sulindac Sulindac may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Trazodone Trazodone The risk or severity of serotonin syndrome can be increased when Trazodone is combined with Metamfetamine.
Isotretinoin Isotretinoin Isotretinoin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sucralfate Sucralfate Sucralfate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sodium Bicarbonate Sodium Bicarbonate The serum concentration of Metamfetamine can be increased when it is combined with Sodium bicarbonate.
Hydroxyurea Hydroxyurea The metabolism of Metamfetamine can be decreased when combined with Hydroxyurea.
Floxuridine Floxuridine Floxuridine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Phenobarbital Phenobarbital The serum concentration of Phenobarbital can be decreased when it is combined with Metamfetamine.
Metaxalone Metaxalone The risk or severity of adverse effects can be increased when Metaxalone is combined with Metamfetamine.
Methotrexate Injection Methotrexate Injection Methotrexate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Levorphanol Levorphanol Metamfetamine may increase the analgesic activities of Levorphanol.
Primidone Primidone The serum concentration of Primidone can be decreased when it is combined with Metamfetamine.
Methsuximide Methsuximide The risk or severity of adverse effects can be increased when Metamfetamine is combined with Methsuximide.
Diethylpropion Diethylpropion The risk or severity of adverse effects can be increased when Diethylpropion is combined with Metamfetamine.
Chlorpromazine Chlorpromazine The therapeutic efficacy of Metamfetamine can be decreased when used in combination with Chlorpromazine.
Diazepam Diazepam The risk or severity of adverse effects can be increased when Diazepam is combined with Metamfetamine.
Oxazepam Oxazepam The risk or severity of adverse effects can be increased when Oxazepam is combined with Metamfetamine.
Flurazepam Flurazepam The risk or severity of adverse effects can be increased when Flurazepam is combined with Metamfetamine.
Clorazepate Clorazepate The risk or severity of adverse effects can be increased when Clorazepic acid is combined with Metamfetamine.
Lorazepam Lorazepam The risk or severity of adverse effects can be increased when Lorazepam is combined with Metamfetamine.
Phenoxybenzamine Phenoxybenzamine The therapeutic efficacy of Phenoxybenzamine can be decreased when used in combination with Metamfetamine.
Carmustine Carmustine Carmustine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Amantadine Amantadine The risk or severity of serotonin syndrome can be increased when Amantadine is combined with Metamfetamine.
Codeine Codeine The risk or severity of adverse effects can be increased when Codeine is combined with Metamfetamine.
Meprobamate Meprobamate The risk or severity of adverse effects can be increased when Meprobamate is combined with Metamfetamine.
Chlordiazepoxide Chlordiazepoxide The risk or severity of adverse effects can be increased when Chlordiazepoxide is combined with Metamfetamine.
Bromocriptine Bromocriptine The therapeutic efficacy of Bromocriptine can be decreased when used in combination with Metamfetamine.
Metaproterenol Metaproterenol The risk or severity of adverse effects can be increased when Orciprenaline is combined with Metamfetamine.
Tranylcypromine Tranylcypromine Tranylcypromine may increase the hypertensive activities of Metamfetamine.
Phenelzine Phenelzine Phenelzine may increase the hypertensive activities of Metamfetamine.
Procarbazine Procarbazine Procarbazine may increase the hypertensive activities of Metamfetamine.
Ergoloid Mesylates Ergoloid Mesylates The therapeutic efficacy of Ergoloid mesylate can be decreased when used in combination with Metamfetamine.
Tetracycline Tetracycline Tetracycline may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Minocycline Minocycline Minocycline may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Prochlorperazine Prochlorperazine Prochlorperazine may decrease the stimulatory activities of Metamfetamine.
Thioridazine Thioridazine The therapeutic efficacy of Thioridazine can be decreased when used in combination with Metamfetamine.
Trifluoperazine Trifluoperazine The therapeutic efficacy of Trifluoperazine can be decreased when used in combination with Metamfetamine.
Bleomycin Bleomycin Bleomycin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sulfadiazine Sulfadiazine Sulfadiazine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Oxycodone Oxycodone Metamfetamine may increase the analgesic activities of Oxycodone.
Methadone Methadone The risk or severity of adverse effects can be increased when Methadone is combined with Metamfetamine.
Oxybutynin Oxybutynin Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Oxybutynin.
Benztropine Benztropine Metamfetamine may decrease the sedative and stimulatory activities of Benzatropine.
Maprotiline Maprotiline Metamfetamine may decrease the sedative and stimulatory activities of Maprotiline.
Ibuprofen Ibuprofen Ibuprofen may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Trihexyphenidyl Trihexyphenidyl Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Trihexyphenidyl.
Orphenadrine Orphenadrine Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Orphenadrine.
Perphenazine Perphenazine The metabolism of Metamfetamine can be decreased when combined with Perphenazine.
Azathioprine Azathioprine Azathioprine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Fluphenazine Fluphenazine Fluphenazine may decrease the stimulatory activities of Metamfetamine.
Phentermine Phentermine The risk or severity of serotonin syndrome can be increased when Phentermine is combined with Metamfetamine.
Methylphenidate Methylphenidate Methylphenidate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Amoxapine Amoxapine Metamfetamine may decrease the sedative and stimulatory activities of Amoxapine.
Sulfasalazine Sulfasalazine Sulfasalazine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Doxorubicin Doxorubicin The metabolism of Metamfetamine can be decreased when combined with Doxorubicin.
Phenazopyridine Phenazopyridine Phenazopyridine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Carbamazepine Carbamazepine Metamfetamine may decrease the excretion rate of Carbamazepine which could result in a higher serum level.
Molindone Molindone Molindone may decrease the stimulatory activities of Metamfetamine.
Methyldopa Methyldopa Methyldopa may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Clonidine Clonidine The risk or severity of sedation can be increased when Clonidine is combined with Metamfetamine.
Prazosin Prazosin The therapeutic efficacy of Prazosin can be decreased when used in combination with Metamfetamine.
Hydralazine Hydralazine Hydralazine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cimetidine Cimetidine Metamfetamine may decrease the sedative and stimulatory activities of Cimetidine.
Gentamicin Injection Gentamicin Injection Gentamicin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Warfarin Warfarin Metamfetamine may decrease the excretion rate of Warfarin which could result in a higher serum level.
Clonazepam Clonazepam The risk or severity of adverse effects can be increased when Clonazepam is combined with Metamfetamine.
Loperamide Loperamide The metabolism of Metamfetamine can be decreased when combined with Loperamide.
Promethazine Promethazine Metamfetamine may decrease the sedative and stimulatory activities of Promethazine.
Meclofenamate Meclofenamate Meclofenamic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nitrofurantoin Nitrofurantoin Nitrofurantoin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Methenamine Methenamine The serum concentration of Metamfetamine can be decreased when it is combined with Methenamine.
Digoxin Digoxin Metamfetamine may decrease the excretion rate of Digoxin which could result in a higher serum level.
Loxapine Loxapine The risk or severity of adverse effects can be increased when Loxapine is combined with Metamfetamine.
Chloroquine Chloroquine The metabolism of Metamfetamine can be decreased when combined with Chloroquine.
Quinine Quinine The metabolism of Metamfetamine can be decreased when combined with Quinine.
Ethosuximide Ethosuximide Metamfetamine can cause a decrease in the absorption of Ethosuximide resulting in a reduced serum concentration and potentially a decrease in efficacy.
Triamterene Triamterene Triamterene may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Chlorothiazide Chlorothiazide Chlorothiazide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Chlorthalidone Chlorthalidone Chlorthalidone may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Metolazone Metolazone Metolazone may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Isosorbide Isosorbide Isosorbide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Secobarbital Secobarbital The risk or severity of adverse effects can be increased when Secobarbital is combined with Metamfetamine.
Desipramine Desipramine Metamfetamine may decrease the sedative and stimulatory activities of Desipramine.
Amitriptyline Amitriptyline Metamfetamine may decrease the sedative and stimulatory activities of Amitriptyline.
Imipramine Imipramine Metamfetamine may decrease the sedative and stimulatory activities of Imipramine.
Probenecid Probenecid Probenecid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Quinidine Quinidine The therapeutic efficacy of Quinidine can be decreased when used in combination with Metamfetamine.
Procainamide Procainamide The metabolism of Procainamide can be decreased when combined with Metamfetamine.
Isoniazid Isoniazid The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Metamfetamine.
Pyrazinamide Pyrazinamide Pyrazinamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Disopyramide Disopyramide Disopyramide may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Valproic Acid Valproic Acid The risk or severity of adverse effects can be increased when Valproic acid is combined with Metamfetamine.
Tamoxifen Tamoxifen The metabolism of Metamfetamine can be decreased when combined with Tamoxifen.
Butabarbital Butabarbital The risk or severity of adverse effects can be increased when Butabarbital is combined with Metamfetamine.
Levothyroxine Levothyroxine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Levothyroxine.
Liothyronine Liothyronine The risk or severity of adverse effects can be increased when Liothyronine is combined with Metamfetamine.
Methimazole Methimazole The metabolism of Metamfetamine can be decreased when combined with Methimazole.
Propylthiouracil Propylthiouracil The risk or severity of adverse effects can be increased when Metamfetamine is combined with Propylthiouracil.
Chlorpropamide Chlorpropamide Chlorpropamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tolbutamide Tolbutamide Tolbutamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tolazamide Tolazamide Tolazamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Dextromethorphan Dextromethorphan The risk or severity of adverse effects can be increased when Dextromethorphan is combined with Metamfetamine.
Cyclobenzaprine Cyclobenzaprine The risk or severity of CNS depression can be increased when Metamfetamine is combined with Cyclobenzaprine.
Niacin Niacin The metabolism of Metamfetamine can be decreased when combined with Niacin.
Baclofen Baclofen The risk or severity of adverse effects can be increased when Baclofen is combined with Metamfetamine.
Doxylamine Doxylamine Doxylamine may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Cyproheptadine Cyproheptadine Metamfetamine may decrease the sedative and stimulatory activities of Cyproheptadine.
Clemastine Clemastine Metamfetamine may decrease the sedative and stimulatory activities of Clemastine.
Chlorpheniramine Chlorpheniramine Metamfetamine may decrease the sedative and stimulatory activities of Chlorpheniramine.
Brompheniramine Brompheniramine Metamfetamine may decrease the sedative and stimulatory activities of Dexbrompheniramine.
Meclizine Meclizine Metamfetamine may decrease the sedative and stimulatory activities of Meclizine.
Ethambutol Ethambutol Ethambutol may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Methyclothiazide Methyclothiazide Methyclothiazide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Hydrochlorothiazide Hydrochlorothiazide Hydrochlorothiazide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Dantrolene Dantrolene The risk or severity of adverse effects can be increased when Dantrolene is combined with Metamfetamine.
Chlorzoxazone Chlorzoxazone The risk or severity of adverse effects can be increased when Chlorzoxazone is combined with Metamfetamine.
Carisoprodol Carisoprodol The risk or severity of adverse effects can be increased when Carisoprodol is combined with Metamfetamine.
Methocarbamol Methocarbamol The risk or severity of adverse effects can be increased when Methocarbamol is combined with Metamfetamine.
Pyridoxine Pyridoxine Pyridoxine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Folic Acid Folic Acid Folic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Disulfiram Disulfiram The therapeutic efficacy of Metamfetamine can be decreased when used in combination with Disulfiram.
Propranolol (Cardiovascular) Propranolol (Cardiovascular) The therapeutic efficacy of Propranolol can be decreased when used in combination with Metamfetamine.
Minoxidil Minoxidil Metamfetamine may decrease the antihypertensive activities of Minoxidil.
Pseudoephedrine Pseudoephedrine The risk or severity of serotonin syndrome can be increased when Pseudoephedrine is combined with Metamfetamine.
Nortriptyline Nortriptyline Metamfetamine may decrease the sedative and stimulatory activities of Nortriptyline.
Spironolactone Spironolactone The therapeutic efficacy of Metamfetamine can be decreased when used in combination with Spironolactone.
Amphotericin B Injection Amphotericin B Injection Amphotericin B may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Mercaptopurine Mercaptopurine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Mercaptopurine.
Phytonadione Phytonadione Phylloquinone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Amikacin Injection Amikacin Injection Amikacin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nadolol Nadolol The therapeutic efficacy of Nadolol can be decreased when used in combination with Metamfetamine.
Butorphanol Injection Butorphanol Injection Metamfetamine may increase the analgesic activities of Butorphanol.
Nalbuphine Injection Nalbuphine Injection Metamfetamine may increase the analgesic activities of Nalbuphine.
Allopurinol Allopurinol Allopurinol may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Trimethobenzamide Trimethobenzamide The risk or severity of adverse effects can be increased when Trimethobenzamide is combined with Metamfetamine.
Flavoxate Flavoxate Flavoxate may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Colchicine Colchicine Colchicine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefaclor Cefaclor Cefaclor may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefadroxil Cefadroxil Cefadroxil may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefazolin Injection Cefazolin Injection Cefazolin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cephalexin Cephalexin Cephalexin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefoxitin Injection Cefoxitin Injection Cefoxitin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Dacarbazine Dacarbazine Dacarbazine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Acetazolamide Acetazolamide Acetazolamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefotaxime Injection Cefotaxime Injection Cefotaxime may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Calcitonin Salmon Injection Calcitonin Salmon Injection The risk or severity of adverse effects can be increased when Salmon calcitonin is combined with Metamfetamine.
Ketoconazole Ketoconazole The metabolism of Metamfetamine can be decreased when combined with Ketoconazole.
Pyrantel Pyrantel The risk or severity of adverse effects can be increased when Metamfetamine is combined with Pyrantel.
Captopril Captopril Metamfetamine may decrease the antihypertensive activities of Captopril.
Isoxsuprine Isoxsuprine The risk or severity of adverse effects can be increased when Metamfetamine is combined with Isoxsuprine.
Vinblastine Vinblastine The metabolism of Metamfetamine can be decreased when combined with Vinblastine.
Ethacrynic Acid Ethacrynic Acid Etacrynic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Colistimethate Injection Colistimethate Injection Colistimethate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Metoprolol Metoprolol The metabolism of Metoprolol can be decreased when combined with Metamfetamine.
Hydroxyzine Hydroxyzine Hydroxyzine may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Thiothixene Thiothixene The risk or severity of adverse effects can be increased when Metamfetamine is combined with Thiothixene.
Aspirin Aspirin Acetylsalicylic acid may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Salsalate Salsalate Salsalate may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Alprazolam Alprazolam The risk or severity of adverse effects can be increased when Alprazolam is combined with Metamfetamine.
Temazepam Temazepam The risk or severity of adverse effects can be increased when Temazepam is combined with Metamfetamine.
Triazolam Triazolam The risk or severity of adverse effects can be increased when Triazolam is combined with Metamfetamine.
Dicyclomine Dicyclomine Dicyclomine may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Hyoscyamine Hyoscyamine Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Hyoscyamine.
Propantheline Propantheline Propantheline may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Trimethoprim Trimethoprim Trimethoprim may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Diltiazem Diltiazem The metabolism of Metamfetamine can be decreased when combined with Diltiazem.
Nifedipine Nifedipine The metabolism of Metamfetamine can be decreased when combined with Nifedipine.
Timolol Timolol The therapeutic efficacy of Timolol can be decreased when used in combination with Metamfetamine.
Verapamil Verapamil The therapeutic efficacy of Verapamil can be decreased when used in combination with Metamfetamine.
Atenolol Atenolol The therapeutic efficacy of Atenolol can be decreased when used in combination with Metamfetamine.
Pindolol Pindolol The therapeutic efficacy of Pindolol can be decreased when used in combination with Metamfetamine.
Cisplatin Injection Cisplatin Injection Metamfetamine may decrease the excretion rate of Cisplatin which could result in a higher serum level.
Diflunisal Diflunisal Diflunisal may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Piroxicam Piroxicam Piroxicam may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Bumetanide Bumetanide Bumetanide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Glyburide Glyburide The therapeutic efficacy of Glyburide can be decreased when used in combination with Metamfetamine.
Glipizide Glipizide Glipizide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Indapamide Indapamide Indapamide may increase the excretion rate of Metamfetamine which could result in a lower serum level and potentially a reduction in efficacy.
Amoxicillin Amoxicillin Amoxicillin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Oxacillin Injection Oxacillin Injection Oxacillin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Pentoxifylline Pentoxifylline The risk or severity of adverse effects can be increased when Metamfetamine is combined with Pentoxifylline.
Pentamidine Injection Pentamidine Injection Pentamidine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ceftriaxone Injection Ceftriaxone Injection Ceftriaxone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Labetalol Labetalol The therapeutic efficacy of Labetalol can be decreased when used in combination with Metamfetamine.
Auranofin Auranofin Auranofin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Leuprolide Injection Leuprolide Injection Leuprolide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Gemfibrozil Gemfibrozil Gemfibrozil may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Guanabenz Guanabenz The risk or severity of hypertension can be increased when Guanabenz is combined with Metamfetamine.
Dipivefrin Ophthalmic Dipivefrin Ophthalmic Adefovir dipivoxil may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ceftazidime Injection Ceftazidime Injection Ceftazidime may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ketoprofen Ketoprofen Ketoprofen may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefotetan Injection Cefotetan Injection Cefotetan may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Pimozide Pimozide The therapeutic efficacy of Metamfetamine can be decreased when used in combination with Pimozide.
Enalapril Enalapril Metamfetamine may decrease the antihypertensive activities of Enalapril.
Flurbiprofen Flurbiprofen Flurbiprofen may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Amiodarone Amiodarone The metabolism of Metamfetamine can be decreased when combined with Amiodarone.
Aztreonam Injection Aztreonam Injection Aztreonam may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Buspirone Buspirone The risk or severity of serotonin syndrome can be increased when Buspirone is combined with Metamfetamine.
Lovastatin Lovastatin The metabolism of Metamfetamine can be decreased when combined with Lovastatin.
Ciprofloxacin Ciprofloxacin Ciprofloxacin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Mesalamine Mesalamine Mesalazine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Diclofenac Diclofenac Diclofenac may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Fluoxetine Fluoxetine The serum concentration of Metamfetamine can be increased when it is combined with Fluoxetine.
Nimodipine Nimodipine Metamfetamine may decrease the antihypertensive activities of Nimodipine.
Clozapine Clozapine Metamfetamine may decrease the sedative and stimulatory activities of Clozapine.
Estazolam Estazolam The risk or severity of adverse effects can be increased when Estazolam is combined with Metamfetamine.
Idarubicin Idarubicin The metabolism of Metamfetamine can be decreased when combined with Idarubicin.
Didanosine Didanosine Didanosine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Pentostatin Injection Pentostatin Injection Pentostatin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Benazepril Benazepril Metamfetamine may decrease the antihypertensive activities of Benazepril.
Etodolac Etodolac Etodolac may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Felodipine Felodipine The metabolism of Felodipine can be decreased when combined with Metamfetamine.
Fosinopril Fosinopril Fosinopril may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nabumetone Nabumetone Nabumetone may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Quinapril Quinapril Metamfetamine may decrease the antihypertensive activities of Quinapril.
Ramipril Ramipril Metamfetamine may decrease the antihypertensive activities of Ramipril.
Simvastatin Simvastatin The metabolism of Metamfetamine can be decreased when combined with Simvastatin.
Amlodipine Amlodipine Metamfetamine may decrease the antihypertensive activities of Amlodipine.
Lisinopril Lisinopril Lisinopril may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Oxaprozin Oxaprozin Oxaprozin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sotalol Sotalol The therapeutic efficacy of Sotalol can be decreased when used in combination with Metamfetamine.
Bisoprolol Bisoprolol The therapeutic efficacy of Bisoprolol can be decreased when used in combination with Metamfetamine.
Zolpidem Zolpidem Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Zolpidem.
Doxazosin Doxazosin The therapeutic efficacy of Doxazosin can be decreased when used in combination with Metamfetamine.
Terazosin Terazosin The therapeutic efficacy of Terazosin can be decreased when used in combination with Metamfetamine.
Isradipine Isradipine Isradipine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Omeprazole Omeprazole The metabolism of Metamfetamine can be decreased when combined with Omeprazole.
Cisapride Cisapride The metabolism of Metamfetamine can be decreased when combined with Cisapride.
Gabapentin Gabapentin The risk or severity of adverse effects can be increased when Gabapentin is combined with Metamfetamine.
Fluvastatin Fluvastatin The metabolism of Metamfetamine can be decreased when combined with Fluvastatin.
Venlafaxine Venlafaxine The metabolism of Metamfetamine can be decreased when combined with Venlafaxine.
Nizatidine Nizatidine Metamfetamine may decrease the sedative and stimulatory activities of Nizatidine.
Fluvoxamine Fluvoxamine The metabolism of Fluvoxamine can be decreased when combined with Metamfetamine.
Nefazodone Nefazodone The therapeutic efficacy of Nefazodone can be decreased when used in combination with Metamfetamine.
Lamotrigine Lamotrigine Lamotrigine may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Losartan Losartan Metamfetamine may decrease the antihypertensive activities of Losartan.
Valacyclovir Valacyclovir Valaciclovir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Tramadol Tramadol The risk or severity of serotonin syndrome can be increased when Metamfetamine is combined with Tramadol.
Vinorelbine Injection Vinorelbine Injection The metabolism of Metamfetamine can be decreased when combined with Vinorelbine.
Carboplatin Injection Carboplatin Injection Carboplatin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Moexipril Moexipril Metamfetamine may decrease the antihypertensive activities of Moexipril.
Lansoprazole Lansoprazole The metabolism of Metamfetamine can be decreased when combined with Lansoprazole.
Ifosfamide Injection Ifosfamide Injection Ifosfamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nicardipine Nicardipine The metabolism of Nicardipine can be decreased when combined with Metamfetamine.
Bupropion Bupropion The metabolism of Metamfetamine can be decreased when combined with Bupropion.
Ticlopidine Ticlopidine The metabolism of Metamfetamine can be decreased when combined with Ticlopidine.
Saquinavir Saquinavir The metabolism of Metamfetamine can be decreased when combined with Saquinavir.
Metformin Metformin Metformin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nisoldipine Nisoldipine Nisoldipine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Lamivudine Lamivudine Lamivudine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Riluzole Riluzole The risk or severity of adverse effects can be increased when Riluzole is combined with Metamfetamine.
Acarbose Acarbose Acarbose may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Gemcitabine Injection Gemcitabine Injection Gemcitabine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Ritonavir Ritonavir The serum concentration of Metamfetamine can be increased when it is combined with Ritonavir.
Cidofovir Injection Cidofovir Injection Cidofovir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Meropenem Injection Meropenem Injection Meropenem may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Clomipramine Clomipramine The therapeutic efficacy of Clomipramine can be increased when used in combination with Metamfetamine.
Fosfomycin Fosfomycin Fosfomycin may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Mirtazapine Mirtazapine Metamfetamine may increase the serotonergic activities of Mirtazapine.
Trandolapril Trandolapril Metamfetamine may decrease the antihypertensive activities of Trandolapril.
Topiramate Topiramate The risk or severity of adverse effects can be increased when Topiramate is combined with Metamfetamine.
Valsartan Valsartan Metamfetamine may decrease the antihypertensive activities of Valsartan.
Pramipexole Pramipexole Metamfetamine may increase the sedative activities of Pramipexole.
Donepezil Donepezil The risk or severity of adverse effects can be increased when Donepezil is combined with Metamfetamine.
Nelfinavir Nelfinavir The metabolism of Metamfetamine can be decreased when combined with Nelfinavir.
Fexofenadine Fexofenadine Metamfetamine may decrease the sedative and stimulatory activities of Fexofenadine.
Loratadine Loratadine Metamfetamine may decrease the sedative and stimulatory activities of Loratadine.
Carvedilol Carvedilol The therapeutic efficacy of Carvedilol can be decreased when used in combination with Metamfetamine.
Nilutamide Nilutamide Nilutamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Flutamide Flutamide Flutamide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Selegiline Selegiline The risk or severity of adverse effects can be increased when Selegiline is combined with Metamfetamine.
Bicalutamide Bicalutamide The metabolism of Metamfetamine can be decreased when combined with Bicalutamide.
Sertraline Sertraline The risk or severity of adverse effects can be increased when Metamfetamine is combined with Sertraline.
Propafenone Propafenone The therapeutic efficacy of Propafenone can be decreased when used in combination with Metamfetamine.
Irbesartan Irbesartan Metamfetamine may decrease the antihypertensive activities of Irbesartan.
Tamsulosin Tamsulosin The therapeutic efficacy of Tamsulosin can be decreased when used in combination with Metamfetamine.
Ropinirole Ropinirole Metamfetamine may increase the sedative activities of Ropinirole.
Finasteride Finasteride The risk or severity of hypertension can be increased when Finasteride is combined with Metamfetamine.
Quetiapine Quetiapine Metamfetamine may decrease the sedative and stimulatory activities of Quetiapine.
Cefepime Injection Cefepime Injection Cefepime may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefprozil Cefprozil Cefprozil may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cefpodoxime Cefpodoxime Cefpodoxime may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Cetirizine Cetirizine Metamfetamine may decrease the sedative and stimulatory activities of Cetirizine.
Paroxetine Paroxetine The metabolism of Metamfetamine can be decreased when combined with Paroxetine.
Tolcapone Tolcapone The risk or severity of adverse effects can be increased when Tolcapone is combined with Metamfetamine.
Citalopram Citalopram The risk or severity of adverse effects can be increased when Metamfetamine is combined with Citalopram.
Capecitabine Capecitabine Capecitabine may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Efavirenz Efavirenz The risk or severity of adverse effects can be increased when Efavirenz is combined with Metamfetamine.
Abacavir Abacavir Abacavir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Sildenafil Sildenafil The metabolism of Metamfetamine can be decreased when combined with Sildenafil.
Celecoxib Celecoxib The metabolism of Metamfetamine can be decreased when combined with Celecoxib.
Rosiglitazone Rosiglitazone The metabolism of Metamfetamine can be decreased when combined with Rosiglitazone.
Tolterodine Tolterodine Tolterodine may increase the central nervous system depressant (CNS depressant) activities of Metamfetamine.
Thalidomide Thalidomide Metamfetamine may increase the central nervous system depressant (CNS depressant) activities of Thalidomide.
Oseltamivir Oseltamivir Oseltamivir may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Aluminum Hydroxide Aluminum Hydroxide The serum concentration of Metamfetamine can be increased when it is combined with Aluminum hydroxide.
Balsalazide Balsalazide Balsalazide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Nateglinide Nateglinide Nateglinide may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Galantamine Galantamine The metabolism of Metamfetamine can be decreased when combined with Galantamine.
Levetiracetam Levetiracetam The risk or severity of adverse effects can be increased when Levetiracetam is combined with Metamfetamine.
Rabeprazole Rabeprazole Rabeprazole may decrease the excretion rate of Metamfetamine which could result in a higher serum level.
Terbinafine Terbinafine The metabolism of Metamfetamine can be decreased when combined with Terbinafine.

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