Methamphetamine

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.