Isoniazid

Generic name: Pronounced as (eye soe nye' a zid)
Brand names
  • Hyzyd®
  • INH®
  • Laniazid®
  • Nydrazid®
  • Rimifon®
  • Stanozide®
  • Tubizid®
Click on drug name to hear pronunciation

Medical Content Reviewed By HelloPharmacist Staff

Last Revised - 12/15/2016

Isoniazid may cause severe and sometimes fatal liver damage. Tell your doctor if you have or have ever had liver disease, if you drink or have ever drunk large amounts of alcohol, or if you are using or have ever abused injectable street drugs. If you experience any of the following symptoms, call your doctor immediately: excessive tiredness, weakness, lack of energy, loss of appetite, nausea, vomiting, dark yellow or brown urine, yellowing of the skin or eyes, pain in the upper right part of the stomach, or flu-like symptoms.

Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your response to isoniazid.

Isoniazid is used with other drugs to treat tuberculosis (TB; a serious infection that affects the lungs and sometimes other parts of the body). Isoniazid is also used with other drugs to treat people with latent (resting or nongrowing) TB including those in close contact with people who have active TB, a positive tuberculin skin test, human immunodeficiency virus (HIV), and those with pulmonary fibrosis (scarring of the lungs with an unknown cause). Isoniazid is in a class of medications called antituberculosis agents. It works by killing the bacteria that cause tuberculosis.

Isoniazid comes as a tablet and a solution (liquid) to take by mouth without food. Isoniazid is usually is taken once a day; it may also be taken one, two, or three times weekly. Take isoniazid at around the same time every scheduled day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take isoniazid exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.

Your doctor may tell you to take isoniazid for 6 months or longer. Continue to take isoniazid even if you feel well. Do not skip doses or stop taking isoniazid without talking to your doctor. Stopping isoniazid too soon may cause bacteria to become resistant to antibiotics.

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

Before taking isoniazid,

  • tell your doctor and pharmacist if you are allergic to isoniazid, any other medications, or any of the ingredients in isoniazid tablets or oral solution. Ask your pharmacist for a list of the ingredients.

  • tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: acetaminophen (Tylenol), antacids, carbamazepine (Carbatrol, Equetro, Tegretol, others), citalopram (Celexa), escitalopram (Lexapro), fluoxetine (Prozac, Sarafem, Symbyax), fluvoxamine (Luvox), ketoconazole (Nizoral), paroxetine (Paxil), phenytoin (Dilantin, Phenytek), sertraline (Zoloft), theophylline (Elixophyllin, Theochron, Theo-24), and valproic acid (Depakene, Depakote). Many other medications may interact with isoniazid, so be sure to tell your doctor about all the medications you are taking, even those that do not appear on this list. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

  • in addition to the conditions listed in the IMPORTANT WARNING section, tell your doctor if you have or have ever had kidney disease; diabetes; tingling, burning, and pain in the fingers or toes (peripheral neuropathy); or human immunodeficiency virus (HIV).

  • tell your doctor if you are pregnant or plan to become pregnant. If you become pregnant while taking isoniazid, call your doctor.

  • you should know that you should not drink alcohol while taking this drug.

You will need to avoid eating foods beverages that contain very high amounts of tyramine or histamine during your treatment with isoniazid. These foods and beverages include certain cheeses, red wine, and certain fish (e.g., tuna, other tropical fish). Talk to your doctor or dietitian about which foods you should avoid during your treatment or if you do not feel well after eating or drinking certain foods while taking isoniazid.

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.

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

    • upset stomach

    • diarrhea (when taking solution)

  • If you experience any of the following symptoms or those listed in the IMPORTANT WARNING section, call your doctor immediately:

    • eye pain

    • changes in vision

    • numbness or tingling in the hands and feet

    • rash

    • fever

    • swollen glands

    • sore throat

    • unusual bleeding or bruising

    • ongoing pain that begins in the stomach but may spread to the back

  • 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 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:

  • nausea

  • vomiting

  • dizziness

  • slurred speech

  • vision problems

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

Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.

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.

  • IsonaRif® (containing Isoniazid, Rifampin)
  • Rifamate® (containing Isoniazid, Rifampin)
  • Rifater® (containing Isoniazid, Pyrazinamide, Rifampin)

Drug Interaction
Montelukast Montelukast The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Montelukast is combined with Isoniazid.
Leflunomide Leflunomide The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Leflunomide.
Nevirapine Nevirapine The metabolism of Nevirapine can be decreased when combined with Isoniazid.
Atorvastatin Atorvastatin The metabolism of Atorvastatin can be decreased when combined with Isoniazid.
Dolasetron Dolasetron The risk or severity of serotonin syndrome can be increased when Dolasetron is combined with Isoniazid.
Alendronate Alendronate The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Alendronic acid is combined with Isoniazid.
Aminophylline Aminophylline The serum concentration of Aminophylline can be increased when it is combined with Isoniazid.
Anagrelide Anagrelide The metabolism of Anagrelide can be decreased when combined with Isoniazid.
Candesartan Candesartan The metabolism of Candesartan can be decreased when combined with Isoniazid.
Cilostazol Cilostazol The serum concentration of Cilostazol can be increased when it is combined with Isoniazid.
Clopidogrel Clopidogrel The serum concentration of the active metabolites of Clopidogrel can be reduced when Clopidogrel is used in combination with Isoniazid resulting in a loss in efficacy.
Diphenoxylate Diphenoxylate The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Diphenoxylate.
Estrogen and Progestin (Oral Contraceptives) Estrogen and Progestin (Oral Contraceptives) The metabolism of Isoniazid can be decreased when combined with Conjugated estrogens.
Fenofibrate Fenofibrate The metabolism of Fenofibrate can be decreased when combined with Isoniazid.
Guanfacine Guanfacine Isoniazid may decrease the excretion rate of Guanfacine which could result in a higher serum level.
Magnesium Hydroxide Magnesium Hydroxide Isoniazid may decrease the excretion rate of Magnesium hydroxide which could result in a higher serum level.
Mycophenolate Mycophenolate Isoniazid may decrease the excretion rate of Mycophenolic acid which could result in a higher serum level.
Nafarelin Nafarelin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Nafarelin is combined with Isoniazid.
Naratriptan Naratriptan The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Naratriptan.
Olsalazine Olsalazine Olsalazine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Paregoric Paregoric The risk or severity of serotonin syndrome can be increased when Morphine is combined with Isoniazid.
Pentazocine Pentazocine The risk or severity of serotonin syndrome can be increased when Pentazocine is combined with Isoniazid.
Potassium Potassium Potassium may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Prednisone Prednisone The serum concentration of Isoniazid can be decreased when it is combined with Prednisone.
Ranitidine Ranitidine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Ranitidine is combined with Isoniazid.
Reserpine Reserpine Reserpine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Rizatriptan Rizatriptan The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Rizatriptan.
Sumatriptan Sumatriptan The risk or severity of serotonin syndrome can be increased when Sumatriptan is combined with Isoniazid.
Tacrolimus Tacrolimus The serum concentration of Tacrolimus can be increased when it is combined with Isoniazid.
Tizanidine Tizanidine The metabolism of Tizanidine can be decreased when combined with Isoniazid.
Triamcinolone Triamcinolone The serum concentration of Isoniazid can be decreased when it is combined with Triamcinolone.
Zolmitriptan Zolmitriptan The metabolism of Zolmitriptan can be decreased when combined with Isoniazid.
Ampicillin Injection Ampicillin Injection Ampicillin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Doxycycline Injection Doxycycline Injection Doxycycline may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Fluconazole Injection Fluconazole Injection Fluconazole may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Foscarnet Injection Foscarnet Injection Foscarnet may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Hydromorphone Injection Hydromorphone Injection The metabolism of Hydromorphone can be decreased when combined with Isoniazid.
Levofloxacin Injection Levofloxacin Injection Isoniazid may decrease the excretion rate of Levofloxacin which could result in a higher serum level.
Meperidine Injection Meperidine Injection The metabolism of Meperidine can be decreased when combined with Isoniazid.
Methylprednisolone Injection Methylprednisolone Injection The serum concentration of Isoniazid can be decreased when it is combined with Methylprednisolone.
Metoclopramide Injection Metoclopramide Injection The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Metoclopramide.
Metronidazole Injection Metronidazole Injection The metabolism of Metronidazole can be decreased when combined with Isoniazid.
Morphine Injection Morphine Injection The risk or severity of serotonin syndrome can be increased when Morphine is combined with Isoniazid.
Pamidronate Injection Pamidronate Injection Pamidronic acid may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Vancomycin Injection Vancomycin Injection Isoniazid may decrease the excretion rate of Vancomycin which could result in a higher serum level.
Zidovudine Injection Zidovudine Injection The metabolism of Zidovudine can be decreased when combined with Isoniazid.
Altretamine Altretamine The risk or severity of serotonin syndrome can be increased when Amphetamine is combined with Isoniazid.
Cefuroxime Cefuroxime Cefuroxime may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cyclosporine Cyclosporine The metabolism of Isoniazid can be decreased when combined with Cyclosporine.
Ondansetron Ondansetron The metabolism of Ondansetron can be decreased when combined with Isoniazid.
Granisetron Granisetron The risk or severity of serotonin syndrome can be increased when Granisetron is combined with Isoniazid.
Torsemide Torsemide The metabolism of Torasemide can be decreased when combined with Isoniazid.
Olanzapine Olanzapine The metabolism of Olanzapine can be decreased when combined with Isoniazid.
Alosetron Alosetron The metabolism of Alosetron can be decreased when combined with Isoniazid.
Dofetilide Dofetilide The metabolism of Dofetilide can be decreased when combined with Isoniazid.
Eprosartan Eprosartan The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Eprosartan is combined with Isoniazid.
Meloxicam Meloxicam The metabolism of Meloxicam can be decreased when combined with Isoniazid.
Oxcarbazepine Oxcarbazepine The therapeutic efficacy of Oxcarbazepine can be decreased when used in combination with Isoniazid.
Pantoprazole Pantoprazole The metabolism of Pantoprazole can be decreased when combined with Isoniazid.
Risedronate Risedronate The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Risedronic acid is combined with Isoniazid.
Temozolomide Temozolomide Temozolomide may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Zaleplon Zaleplon The therapeutic efficacy of Zaleplon can be decreased when used in combination with Isoniazid.
Linezolid Linezolid The risk or severity of serotonin syndrome can be increased when Linezolid is combined with Isoniazid.
Trimipramine Trimipramine The metabolism of Trimipramine can be decreased when combined with Isoniazid.
Perindopril Perindopril Perindopril may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Tenofovir Tenofovir Tenofovir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Choline Magnesium Trisalicylate Choline Magnesium Trisalicylate Choline magnesium trisalicylate may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Sirolimus Sirolimus The metabolism of Sirolimus can be decreased when combined with Isoniazid.
Eplerenone Eplerenone The metabolism of Eplerenone can be decreased when combined with Isoniazid.
Escitalopram Escitalopram The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Escitalopram.
Zonisamide Zonisamide The metabolism of Zonisamide can be decreased when combined with Isoniazid.
Aripiprazole Aripiprazole The metabolism of Aripiprazole can be decreased when combined with Isoniazid.
Atomoxetine Atomoxetine The metabolism of Atomoxetine can be decreased when combined with Isoniazid.
Dexmethylphenidate Dexmethylphenidate The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Dexmethylphenidate.
Atazanavir Atazanavir Atazanavir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Almotriptan Almotriptan The risk or severity of serotonin syndrome can be increased when Almotriptan is combined with Isoniazid.
Eletriptan Eletriptan The metabolism of Eletriptan can be decreased when combined with Isoniazid.
Mefloquine Mefloquine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Mefloquine is combined with Isoniazid.
Rosuvastatin Rosuvastatin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Rosuvastatin.
Vardenafil Vardenafil The metabolism of Vardenafil can be decreased when combined with Isoniazid.
Alfuzosin Alfuzosin The metabolism of Alfuzosin can be decreased when combined with Isoniazid.
Emtricitabine Emtricitabine Emtricitabine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Memantine Memantine Isoniazid may decrease the excretion rate of Memantine which could result in a higher serum level.
Tegaserod Tegaserod The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Tegaserod.
Tadalafil Tadalafil Tadalafil may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Frovatriptan Frovatriptan The metabolism of Frovatriptan can be decreased when combined with Isoniazid.
Progesterone Progesterone The metabolism of Progesterone can be decreased when combined with Isoniazid.
Apomorphine Injection Apomorphine Injection The risk or severity of serotonin syndrome can be increased when Apomorphine is combined with Isoniazid.
Infliximab Injection Infliximab Injection The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Infliximab is combined with Isoniazid.
Protriptyline Protriptyline The risk or severity of serotonin syndrome can be increased when Protriptyline is combined with Isoniazid.
Rifaximin Rifaximin Rifaximin may increase the hepatotoxic activities of Isoniazid.
Duloxetine Duloxetine The metabolism of Duloxetine can be decreased when combined with Isoniazid.
Norethindrone Norethindrone The metabolism of Norethisterone can be decreased when combined with Isoniazid.
Tinidazole Tinidazole Tinidazole may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Bosentan Bosentan The metabolism of Bosentan can be decreased when combined with Isoniazid.
Cefditoren Cefditoren Cefdinir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cinacalcet Cinacalcet The metabolism of Cinacalcet can be decreased when combined with Isoniazid.
Cyanocobalamin Injection Cyanocobalamin Injection Hydroxocobalamin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Erlotinib Erlotinib The metabolism of Erlotinib can be decreased when combined with Isoniazid.
Eszopiclone Eszopiclone The metabolism of Eszopiclone can be decreased when combined with Isoniazid.
Ganciclovir Ganciclovir The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Ganciclovir.
Ribavirin Ribavirin Ribavirin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Valganciclovir Valganciclovir Isoniazid may decrease the excretion rate of Valganciclovir which could result in a higher serum level.
Voriconazole Voriconazole The metabolism of Voriconazole can be decreased when combined with Isoniazid.
Adefovir Adefovir Adefovir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Dextroamphetamine Dextroamphetamine The risk or severity of serotonin syndrome can be increased when Amphetamine is combined with Isoniazid.
Entecavir Entecavir The metabolism of Entecavir can be decreased when combined with Isoniazid.
Ibandronate Ibandronate The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Ibandronate is combined with Isoniazid.
Isocarboxazid Isocarboxazid The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Isocarboxazid.
Ramelteon Ramelteon The metabolism of Ramelteon can be decreased when combined with Isoniazid.
Fentanyl Fentanyl The metabolism of Fentanyl can be decreased when combined with Isoniazid.
Pregabalin Pregabalin The therapeutic efficacy of Isoniazid can be decreased when used in combination with Pregabalin.
Felbamate Felbamate The metabolism of Felbamate can be decreased when combined with Isoniazid.
Ranolazine Ranolazine The metabolism of Isoniazid can be decreased when combined with Ranolazine.
Rasagiline Rasagiline The metabolism of Rasagiline can be decreased when combined with Isoniazid.
Imatinib Imatinib The metabolism of Imatinib can be decreased when combined with Isoniazid.
Sitagliptin Sitagliptin Isoniazid may decrease the excretion rate of Sitagliptin which could result in a higher serum level.
Varenicline Varenicline Isoniazid may decrease the excretion rate of Varenicline which could result in a higher serum level.
Albuterol Albuterol Isoniazid may decrease the excretion rate of Salbutamol which could result in a higher serum level.
Paliperidone Paliperidone The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Paliperidone.
Bortezomib Bortezomib The metabolism of Bortezomib can be decreased when combined with Isoniazid.
Clofarabine Injection Clofarabine Injection Clofarabine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Lubiprostone Lubiprostone Isoniazid may decrease the excretion rate of Lubiprostone which could result in a higher serum level.
Primaquine Primaquine The metabolism of Primaquine can be decreased when combined with Isoniazid.
Pemetrexed Injection Pemetrexed Injection Isoniazid may decrease the excretion rate of Pemetrexed which could result in a higher serum level.
Lisdexamfetamine Lisdexamfetamine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Lisdexamfetamine.
Retapamulin Retapamulin The metabolism of Retapamulin can be decreased when combined with Isoniazid.
Sorafenib Sorafenib The metabolism of Sorafenib can be decreased when combined with Isoniazid.
Sunitinib Sunitinib The metabolism of Sunitinib can be decreased when combined with Isoniazid.
Dronabinol Dronabinol The metabolism of Dronabinol can be decreased when combined with Isoniazid.
Lapatinib Lapatinib The metabolism of Lapatinib can be decreased when combined with Isoniazid.
Levocetirizine Levocetirizine Isoniazid may decrease the excretion rate of Levocetirizine which could result in a higher serum level.
Pegaptanib Injection Pegaptanib Injection Isoniazid may decrease the excretion rate of Pegaptanib which could result in a higher serum level.
Dasatinib Dasatinib The metabolism of Dasatinib can be decreased when combined with Isoniazid.
Mexiletine Mexiletine The metabolism of Mexiletine can be decreased when combined with Isoniazid.
Azacitidine Injection Azacitidine Injection Azacitidine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ivermectin Ivermectin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Ivermectin is combined with Isoniazid.
Temsirolimus Temsirolimus The metabolism of Temsirolimus can be decreased when combined with Isoniazid.
Lenalidomide Lenalidomide Lenalidomide may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nilotinib Nilotinib The metabolism of Nilotinib can be decreased when combined with Isoniazid.
Raltegravir Raltegravir The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Raltegravir.
Bexarotene Bexarotene The metabolism of Bexarotene can be decreased when combined with Isoniazid.
Budesonide Budesonide The serum concentration of Isoniazid can be decreased when it is combined with Budesonide.
Desmopressin Desmopressin Desmopressin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Doripenem Injection Doripenem Injection Isoniazid may decrease the excretion rate of Doripenem which could result in a higher serum level.
Etravirine Etravirine The metabolism of Etravirine can be decreased when combined with Isoniazid.
Arsenic Trioxide Injection Arsenic Trioxide Injection Isoniazid may decrease the excretion rate of Arsenic trioxide which could result in a higher serum level.
Desvenlafaxine Desvenlafaxine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Desvenlafaxine.
Cevimeline Cevimeline Cevimeline may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nebivolol Nebivolol The metabolism of Nebivolol can be decreased when combined with Isoniazid.
Tretinoin Tretinoin The metabolism of Tretinoin can be decreased when combined with Isoniazid.
Bendamustine Injection Bendamustine Injection The metabolism of Bendamustine can be decreased when combined with Isoniazid.
Flecainide Flecainide The metabolism of Flecainide can be decreased when combined with Isoniazid.
Certolizumab Injection Certolizumab Injection Isoniazid may decrease the excretion rate of Certolizumab pegol which could result in a higher serum level.
Ixabepilone Injection Ixabepilone Injection The metabolism of Ixabepilone can be decreased when combined with Isoniazid.
Irinotecan Injection Irinotecan Injection The metabolism of Irinotecan can be decreased when combined with Isoniazid.
Daptomycin Injection Daptomycin Injection The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Daptomycin is combined with Isoniazid.
Praziquantel Praziquantel The metabolism of Praziquantel can be decreased when combined with Isoniazid.
Methylnaltrexone Injection Methylnaltrexone Injection Isoniazid may decrease the excretion rate of Methylnaltrexone which could result in a higher serum level.
Rufinamide Rufinamide The metabolism of Rufinamide can be decreased when combined with Isoniazid.
Midazolam Midazolam The serum concentration of Midazolam can be increased when it is combined with Isoniazid.
Naltrexone Injection Naltrexone Injection The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Naltrexone is combined with Isoniazid.
Dexrazoxane Injection Dexrazoxane Injection Dexrazoxane may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Eltrombopag Eltrombopag The metabolism of Eltrombopag can be decreased when combined with Isoniazid.
Milnacipran Milnacipran The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Milnacipran.
Dexlansoprazole Dexlansoprazole The metabolism of Dexlansoprazole can be decreased when combined with Isoniazid.
Plerixafor Injection Plerixafor Injection Isoniazid may decrease the excretion rate of Plerixafor which could result in a higher serum level.
Fesoterodine Fesoterodine Isoniazid may decrease the excretion rate of Fesoterodine which could result in a higher serum level.
Betaxolol Betaxolol The metabolism of Betaxolol can be decreased when combined with Isoniazid.
Iloperidone Iloperidone The metabolism of Iloperidone can be decreased when combined with Isoniazid.
Prasugrel Prasugrel The metabolism of Prasugrel can be decreased when combined with Isoniazid.
Lacosamide Lacosamide The metabolism of Lacosamide can be decreased when combined with Isoniazid.
Everolimus Everolimus The metabolism of Everolimus can be decreased when combined with Isoniazid.
Tolvaptan (low blood sodium) Tolvaptan (low blood sodium) The metabolism of Isoniazid can be decreased when combined with Tolvaptan.
Dronedarone Dronedarone The metabolism of Dronedarone can be decreased when combined with Isoniazid.
Pralatrexate Injection Pralatrexate Injection Isoniazid may decrease the excretion rate of Pralatrexate which could result in a higher serum level.
Palonosetron Injection Palonosetron Injection The risk or severity of serotonin syndrome can be increased when Palonosetron is combined with Isoniazid.
Saxagliptin Saxagliptin Isoniazid may decrease the excretion rate of Saxagliptin which could result in a higher serum level.
Telavancin Injection Telavancin Injection Isoniazid may decrease the excretion rate of Telavancin which could result in a higher serum level.
Romidepsin Injection Romidepsin Injection The metabolism of Romidepsin can be decreased when combined with Isoniazid.
Tapentadol Tapentadol The metabolism of Tapentadol can be decreased when combined with Isoniazid.
Topotecan Topotecan Isoniazid may decrease the excretion rate of Topotecan which could result in a higher serum level.
Pazopanib Pazopanib The metabolism of Pazopanib can be decreased when combined with Isoniazid.
Asenapine Asenapine The metabolism of Asenapine can be decreased when combined with Isoniazid.
Vigabatrin Vigabatrin The therapeutic efficacy of Vigabatrin can be decreased when used in combination with Isoniazid.
Pitavastatin Pitavastatin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Pitavastatin.
Albendazole Albendazole The metabolism of Albendazole can be decreased when combined with Isoniazid.
Oxymorphone Oxymorphone The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Oxymorphone.
Dalfampridine Dalfampridine The risk or severity of seizure can be increased when Isoniazid is combined with Dalfampridine.
Fingolimod Fingolimod The metabolism of Fingolimod can be decreased when combined with Isoniazid.
Cabazitaxel Injection Cabazitaxel Injection The metabolism of Cabazitaxel can be decreased when combined with Isoniazid.
Ceftaroline Injection Ceftaroline Injection Ceftaroline fosamil may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Lurasidone Lurasidone The metabolism of Lurasidone can be decreased when combined with Isoniazid.
Acetaminophen Injection Acetaminophen Injection Isoniazid may increase the hepatotoxic activities of Acetaminophen.
Vilazodone Vilazodone The metabolism of Vilazodone can be decreased when combined with Isoniazid.
Ipilimumab Injection Ipilimumab Injection Isoniazid 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 Isoniazid which could result in a higher serum level.
Terbutaline Injection Terbutaline Injection Terbutaline may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Busulfan Injection Busulfan Injection The metabolism of Busulfan can be decreased when combined with Isoniazid.
Roflumilast Roflumilast The metabolism of Roflumilast can be decreased when combined with Isoniazid.
Linagliptin Linagliptin The metabolism of Linagliptin can be decreased when combined with Isoniazid.
Cyclophosphamide Injection Cyclophosphamide Injection The metabolism of Cyclophosphamide can be decreased when combined with Isoniazid.
Rivaroxaban Rivaroxaban Isoniazid may decrease the excretion rate of Rivaroxaban which could result in a higher serum level.
Brentuximab Vedotin Injection Brentuximab Vedotin Injection The metabolism of Brentuximab vedotin can be decreased when combined with Isoniazid.
Ruxolitinib Ruxolitinib The metabolism of Ruxolitinib can be decreased when combined with Isoniazid.
Vandetanib Vandetanib The metabolism of Vandetanib can be decreased when combined with Isoniazid.
Clobazam Clobazam The metabolism of Clobazam can be decreased when combined with Isoniazid.
Vemurafenib Vemurafenib The metabolism of Vemurafenib can be decreased when combined with Isoniazid.
Vismodegib Vismodegib The metabolism of Vismodegib can be decreased when combined with Isoniazid.
Ivacaftor Ivacaftor The metabolism of Ivacaftor can be decreased when combined with Isoniazid.
Deferiprone Deferiprone Isoniazid may decrease the excretion rate of Deferiprone which could result in a higher serum level.
Axitinib Axitinib The metabolism of Axitinib can be decreased when combined with Isoniazid.
Crizotinib Crizotinib The metabolism of Crizotinib can be decreased when combined with Isoniazid.
Cabergoline Cabergoline The metabolism of Isoniazid can be decreased when combined with Cabergoline.
Naloxone Injection Naloxone Injection Isoniazid may decrease the excretion rate of Naloxone which could result in a higher serum level.
Fondaparinux Injection Fondaparinux Injection Fondaparinux may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ezogabine Ezogabine The therapeutic efficacy of Tiagabine can be decreased when used in combination with Isoniazid.
Iloprost Iloprost The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Iloprost.
Enzalutamide Enzalutamide The metabolism of Enzalutamide can be decreased when combined with Isoniazid.
Mirabegron Mirabegron Isoniazid may decrease the excretion rate of Mirabegron which could result in a higher serum level.
Regorafenib Regorafenib The metabolism of Regorafenib can be decreased when combined with Isoniazid.
Bosutinib Bosutinib The metabolism of Bosutinib can be decreased when combined with Isoniazid.
Corticotropin, Repository Injection Corticotropin, Repository Injection The serum concentration of Isoniazid can be decreased when it is combined with Corticotropin.
Cabozantinib (thyroid cancer) Cabozantinib (thyroid cancer) The metabolism of Cabozantinib can be decreased when combined with Isoniazid.
Teduglutide Injection Teduglutide Injection Isoniazid may decrease the excretion rate of Teduglutide which could result in a higher serum level.
Tofacitinib Tofacitinib The metabolism of Tofacitinib can be decreased when combined with Isoniazid.
Alogliptin Alogliptin Isoniazid 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 Isoniazid.
Pomalidomide Pomalidomide The metabolism of Pomalidomide can be decreased when combined with Isoniazid.
Ado-trastuzumab Emtansine Injection Ado-trastuzumab Emtansine Injection The metabolism of Trastuzumab emtansine can be decreased when combined with Isoniazid.
Apixaban Apixaban The metabolism of Apixaban can be decreased when combined with Isoniazid.
Canagliflozin Canagliflozin Isoniazid 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 increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Dabrafenib Dabrafenib The metabolism of Dabrafenib can be decreased when combined with Isoniazid.
Ospemifene Ospemifene The metabolism of Ospemifene can be decreased when combined with Isoniazid.
Trametinib Trametinib Isoniazid may decrease the excretion rate of Trametinib which could result in a higher serum level.
Levomilnacipran Levomilnacipran The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Levomilnacipran.
Ertapenem Injection Ertapenem Injection Ertapenem may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Vortioxetine Vortioxetine The metabolism of Vortioxetine can be decreased when combined with Isoniazid.
Perampanel Perampanel The metabolism of Perampanel can be decreased when combined with Isoniazid.
Ibrutinib Ibrutinib The metabolism of Ibrutinib can be decreased when combined with Isoniazid.
Lomitapide Lomitapide The metabolism of Lomitapide can be decreased when combined with Isoniazid.
Avanafil Avanafil The metabolism of Avanafil can be decreased when combined with Isoniazid.
Ketorolac Injection Ketorolac Injection Ketorolac may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Sofosbuvir Sofosbuvir Isoniazid may decrease the excretion rate of Sofosbuvir which could result in a higher serum level.
Dapagliflozin Dapagliflozin The metabolism of Dapagliflozin can be decreased when combined with Isoniazid.
Apremilast Apremilast The metabolism of Apremilast can be decreased when combined with Isoniazid.
Droxidopa Droxidopa Isoniazid may decrease the excretion rate of Droxidopa which could result in a higher serum level.
Ceritinib Ceritinib The metabolism of Ceritinib can be decreased when combined with Isoniazid.
Eslicarbazepine Eslicarbazepine The therapeutic efficacy of Eslicarbazepine can be decreased when used in combination with Isoniazid.
Idelalisib Idelalisib The metabolism of Idelalisib can be decreased when combined with Isoniazid.
Testosterone Injection Testosterone Injection The metabolism of Testosterone can be decreased when combined with Isoniazid.
Vorapaxar Vorapaxar The metabolism of Vorapaxar can be decreased when combined with Isoniazid.
Hydrocodone Hydrocodone The risk or severity of serotonin syndrome can be increased when Hydrocodone is combined with Isoniazid.
Suvorexant Suvorexant The metabolism of Suvorexant can be decreased when combined with Isoniazid.
Edoxaban Edoxaban Isoniazid may decrease the excretion rate of Edoxaban which could result in a higher serum level.
Olaparib Olaparib The metabolism of Olaparib can be decreased when combined with Isoniazid.
Methamphetamine Methamphetamine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Metamfetamine.
Tasimelteon Tasimelteon The metabolism of Tasimelteon can be decreased when combined with Isoniazid.
Pirfenidone Pirfenidone The metabolism of Pirfenidone can be decreased when combined with Isoniazid.
Nintedanib Nintedanib The metabolism of Nintedanib can be decreased when combined with Isoniazid.
Risperidone Injection Risperidone Injection The risk or severity of serotonin syndrome can be increased when Risperidone is combined with Isoniazid.
Palbociclib Palbociclib The metabolism of Palbociclib can be decreased when combined with Isoniazid.
Naloxegol Naloxegol The metabolism of Naloxegol can be decreased when combined with Isoniazid.
Panobinostat Panobinostat The metabolism of Panobinostat can be decreased when combined with Isoniazid.
Haloperidol Injection Haloperidol Injection The serum concentration of Isoniazid can be increased when it is combined with Haloperidol.
Ivabradine Ivabradine The metabolism of Ivabradine can be decreased when combined with Isoniazid.
Amiloride Amiloride Amiloride may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Macitentan Macitentan Isoniazid may decrease the excretion rate of Macitentan which could result in a higher serum level.
Sonidegib Sonidegib The metabolism of Sonidegib can be decreased when combined with Isoniazid.
Flibanserin Flibanserin The metabolism of Flibanserin can be decreased when combined with Isoniazid.
Prednisolone Prednisolone The serum concentration of Isoniazid can be decreased when it is combined with Prednisolone.
Brexpiprazole Brexpiprazole The metabolism of Brexpiprazole can be decreased when combined with Isoniazid.
Ziprasidone Injection Ziprasidone Injection The metabolism of Ziprasidone can be decreased when combined with Isoniazid.
Cariprazine Cariprazine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Cariprazine.
Penicillin G Procaine Injection Penicillin G Procaine Injection Isoniazid may decrease the excretion rate of Procaine benzylpenicillin which could result in a higher serum level.
Eluxadoline Eluxadoline The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Eluxadoline.
Cobimetinib Cobimetinib The metabolism of Cobimetinib can be decreased when combined with Isoniazid.
Trabectedin Injection Trabectedin Injection The metabolism of Trabectedin can be decreased when combined with Isoniazid.
Osimertinib Osimertinib The metabolism of Osimertinib can be decreased when combined with Isoniazid.
Alectinib Alectinib The metabolism of Alectinib can be decreased when combined with Isoniazid.
Ixazomib Ixazomib The metabolism of Ixazomib can be decreased when combined with Isoniazid.
Rifapentine Rifapentine Rifapentine may increase the hepatotoxic activities of Isoniazid.
Lesinurad Lesinurad The metabolism of Lesinurad can be decreased when combined with Isoniazid.
Amphotericin B Liposomal Injection Amphotericin B Liposomal Injection Amphotericin B may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Dexamethasone Injection Dexamethasone Injection The serum concentration of Isoniazid can be decreased when it is combined with Dexamethasone.
Brivaracetam Injection Brivaracetam Injection The metabolism of Brivaracetam can be decreased when combined with Isoniazid.
Venetoclax Venetoclax The metabolism of Venetoclax can be decreased when combined with Isoniazid.
Pimavanserin Pimavanserin The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Pimavanserin.
Diphenhydramine Injection Diphenhydramine Injection The metabolism of Diphenhydramine can be decreased when combined with Isoniazid.
Furosemide Injection Furosemide Injection Furosemide may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Rucaparib Rucaparib The metabolism of Rucaparib can be decreased when combined with Isoniazid.
Lixisenatide Injection Lixisenatide Injection Isoniazid may decrease the excretion rate of Lixisenatide which could result in a higher serum level.
Ribociclib Ribociclib The metabolism of Ribociclib can be decreased when combined with Isoniazid.
Brigatinib Brigatinib The metabolism of Brigatinib can be decreased when combined with Isoniazid.
Doxepin (Insomnia) Doxepin (Insomnia) The metabolism of Doxepin can be decreased when combined with Isoniazid.
Deutetrabenazine Deutetrabenazine Isoniazid may decrease the excretion rate of Deutetrabenazine which could result in a higher serum level.
Valbenazine Valbenazine Isoniazid may decrease the excretion rate of Valbenazine which could result in a higher serum level.
Deflazacort Deflazacort The serum concentration of Deflazacort can be increased when it is combined with Isoniazid.
Safinamide Safinamide The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Safinamide.
Naldemedine Naldemedine Isoniazid may decrease the excretion rate of Naldemedine which could result in a higher serum level.
Midostaurin Midostaurin The metabolism of Midostaurin can be decreased when combined with Isoniazid.
Neratinib Neratinib The metabolism of Neratinib can be decreased when combined with Isoniazid.
Enasidenib Enasidenib The metabolism of Enasidenib can be decreased when combined with Isoniazid.
Aprepitant/Fosaprepitant Injection Aprepitant/Fosaprepitant Injection The metabolism of Fosaprepitant can be decreased when combined with Isoniazid.
Benznidazole Benznidazole Isoniazid may decrease the excretion rate of Benznidazole which could result in a higher serum level.
Copanlisib Injection Copanlisib Injection The metabolism of Copanlisib can be decreased when combined with Isoniazid.
Delafloxacin Delafloxacin Isoniazid may decrease the excretion rate of Delafloxacin which could result in a higher serum level.
Abemaciclib Abemaciclib The metabolism of Abemaciclib can be decreased when combined with Isoniazid.
Acalabrutinib Acalabrutinib The metabolism of Acalabrutinib can be decreased when combined with Isoniazid.
Ertugliflozin Ertugliflozin Ertugliflozin may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Buprenorphine Injection Buprenorphine Injection The metabolism of Buprenorphine can be decreased when combined with Isoniazid.
Apalutamide Apalutamide Isoniazid may decrease the excretion rate of Apalutamide which could result in a higher serum level.
Penicillamine Penicillamine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Penicillamine is combined with Isoniazid.
Baricitinib Baricitinib The metabolism of Baricitinib can be decreased when combined with Isoniazid.
Lofexidine Lofexidine The metabolism of Lofexidine can be decreased when combined with Isoniazid.
Plazomicin Injection Plazomicin Injection Isoniazid 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 Isoniazid.
Binimetinib Binimetinib The metabolism of Binimetinib can be decreased when combined with Isoniazid.
Ivosidenib Ivosidenib The metabolism of Ivosidenib can be decreased when combined with Isoniazid.
Cannabidiol Cannabidiol The metabolism of Cannabidiol can be decreased when combined with Isoniazid.
Dacomitinib Dacomitinib The metabolism of Dacomitinib can be decreased when combined with Isoniazid.
Duvelisib Duvelisib The metabolism of Duvelisib can be decreased when combined with Isoniazid.
Stiripentol Stiripentol The metabolism of Stiripentol can be decreased when combined with Isoniazid.
Gilteritinib Gilteritinib The metabolism of Gilteritinib can be decreased when combined with Isoniazid.
Lorlatinib Lorlatinib The metabolism of Lorlatinib can be decreased when combined with Isoniazid.
Paclitaxel (with albumin) Injection Paclitaxel (with albumin) Injection The metabolism of Paclitaxel can be decreased when combined with Isoniazid.
Rifamycin Rifamycin Rifamycin may increase the hepatotoxic activities of Isoniazid.
Prucalopride Prucalopride The metabolism of Prucalopride can be decreased when combined with Isoniazid.
Siponimod Siponimod The risk or severity of adverse effects can be increased when Isoniazid is combined with Siponimod.
Acyclovir Ophthalmic Acyclovir Ophthalmic Acyclovir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Erdafitinib Erdafitinib The metabolism of Erdafitinib can be decreased when combined with Isoniazid.
Esomeprazole Injection Esomeprazole Injection The metabolism of Esomeprazole can be decreased when combined with Isoniazid.
Alpelisib Alpelisib The metabolism of Alpelisib can be decreased when combined with Isoniazid.
Brexanolone Injection Brexanolone Injection The therapeutic efficacy of Brexanolone can be decreased when used in combination with Isoniazid.
Cladribine Cladribine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Cladribine is combined with Isoniazid.
Solriamfetol Solriamfetol Isoniazid may decrease the excretion rate of Solriamfetol which could result in a higher serum level.
Triclabendazole Triclabendazole The metabolism of Triclabendazole can be decreased when combined with Isoniazid.
Entrectinib Entrectinib The metabolism of Entrectinib can be decreased when combined with Isoniazid.
Pexidartinib Pexidartinib Isoniazid may increase the hepatotoxic activities of Pexidartinib.
Istradefylline Istradefylline The metabolism of Istradefylline can be decreased when combined with Isoniazid.
Pitolisant Pitolisant Isoniazid may decrease the excretion rate of Pitolisant which could result in a higher serum level.
Pretomanid Pretomanid The serum concentration of Pretomanid can be increased when it is combined with Isoniazid.
Fedratinib Fedratinib The metabolism of Fedratinib can be decreased when combined with Isoniazid.
Lefamulin Lefamulin The serum concentration of Lefamulin can be increased when it is combined with Isoniazid.
Phenytoin Injection Phenytoin Injection The serum concentration of Phenytoin can be increased when it is combined with Isoniazid.
Fosphenytoin Injection Fosphenytoin Injection The serum concentration of Fosphenytoin can be increased when it is combined with Isoniazid.
Zanubrutinib Zanubrutinib The metabolism of Zanubrutinib can be decreased when combined with Isoniazid.
Voxelotor Voxelotor The serum concentration of Voxelotor can be increased when it is combined with Isoniazid.
Avapritinib Avapritinib The metabolism of Avapritinib can be decreased when combined with Isoniazid.
Lumateperone Lumateperone The serum concentration of Lumateperone can be increased when it is combined with Isoniazid.
Lasmiditan Lasmiditan The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Lasmiditan.
Ubrogepant Ubrogepant The serum concentration of Ubrogepant can be increased when it is combined with Isoniazid.
Tazemetostat Tazemetostat The metabolism of Tazemetostat can be decreased when combined with Isoniazid.
Cenobamate Cenobamate The metabolism of Cenobamate can be decreased when combined with Isoniazid.
Pemigatinib Pemigatinib The metabolism of Pemigatinib can be decreased when combined with Isoniazid.
Selumetinib Selumetinib The serum concentration of Selumetinib can be increased when it is combined with Isoniazid.
Rimegepant Rimegepant The metabolism of Rimegepant can be decreased when combined with Isoniazid.
Fenfluramine Fenfluramine The risk or severity of serotonin syndrome can be increased when Fenfluramine is combined with Isoniazid.
Lurbinectedin Injection Lurbinectedin Injection The serum concentration of Lurbinectedin can be increased when it is combined with Isoniazid.
Progestin-Only (drospirenone) Oral Contraceptives Progestin-Only (drospirenone) Oral Contraceptives The metabolism of Drospirenone can be decreased when combined with Isoniazid.
Viloxazine Viloxazine Isoniazid may decrease the excretion rate of Viloxazine which could result in a higher serum level.
Tobramycin Injection Tobramycin Injection Tobramycin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Theophylline Theophylline The serum concentration of Theophylline can be increased when it is combined with Isoniazid.
Fenoprofen Fenoprofen Fenoprofen may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Indomethacin Indomethacin Indomethacin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Mefenamic Acid Mefenamic Acid Mefenamic acid may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Naproxen Naproxen Naproxen may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Tolmetin Tolmetin Tolmetin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Sulindac Sulindac Sulindac may decrease the excretion rate of Isoniazid 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 Isoniazid.
Isotretinoin Isotretinoin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Isotretinoin.
Sucralfate Sucralfate Sucralfate may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Floxuridine Floxuridine Floxuridine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Phenobarbital Phenobarbital The metabolism of Phenobarbital can be decreased when combined with Isoniazid.
Metaxalone Metaxalone The risk or severity of serotonin syndrome can be increased when Metaxalone is combined with Isoniazid.
Methotrexate Injection Methotrexate Injection The metabolism of Isoniazid can be decreased when combined with Methotrexate.
Levorphanol Levorphanol The risk or severity of serotonin syndrome can be increased when Levorphanol is combined with Isoniazid.
Primidone Primidone The metabolism of Primidone can be decreased when combined with Isoniazid.
Methsuximide Methsuximide The metabolism of Methsuximide can be decreased when combined with Isoniazid.
Diethylpropion Diethylpropion The risk or severity of serotonin syndrome can be increased when Diethylpropion is combined with Isoniazid.
Chlorpromazine Chlorpromazine The metabolism of Chlorpromazine can be decreased when combined with Isoniazid.
Diazepam Diazepam The metabolism of Diazepam can be decreased when combined with Isoniazid.
Oxazepam Oxazepam Oxazepam may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Flurazepam Flurazepam The metabolism of Isoniazid can be decreased when combined with Flurazepam.
Clorazepate Clorazepate The therapeutic efficacy of Isoniazid can be decreased when used in combination with Clorazepic acid.
Lorazepam Lorazepam The therapeutic efficacy of Isoniazid can be decreased when used in combination with Lorazepam.
Carmustine Carmustine The metabolism of Carmustine can be decreased when combined with Isoniazid.
Amantadine Amantadine The risk or severity of serotonin syndrome can be increased when Amantadine is combined with Isoniazid.
Codeine Codeine The risk or severity of serotonin syndrome can be increased when Codeine is combined with Isoniazid.
Tranylcypromine Tranylcypromine The risk or severity of serotonin syndrome can be increased when Tranylcypromine is combined with Isoniazid.
Phenelzine Phenelzine The risk or severity of serotonin syndrome can be increased when Phenelzine is combined with Isoniazid.
Procarbazine Procarbazine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Procarbazine.
Ergoloid Mesylates Ergoloid Mesylates The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Ergoloid mesylate.
Tetracycline Tetracycline Tetracycline may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Minocycline Minocycline The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Minocycline.
Prochlorperazine Prochlorperazine The metabolism of Prochlorperazine can be decreased when combined with Isoniazid.
Thioridazine Thioridazine The metabolism of Thioridazine can be decreased when combined with Isoniazid.
Trifluoperazine Trifluoperazine The metabolism of Trifluoperazine can be decreased when combined with Isoniazid.
Bleomycin Bleomycin Bleomycin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Dapsone Dapsone The metabolism of Dapsone can be decreased when combined with Isoniazid.
Sulfadiazine Sulfadiazine Sulfadiazine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Oxycodone Oxycodone The risk or severity of serotonin syndrome can be increased when Oxycodone is combined with Isoniazid.
Methadone Methadone The metabolism of Methadone can be decreased when combined with Isoniazid.
Benztropine Benztropine Benzatropine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Maprotiline Maprotiline The metabolism of Maprotiline can be decreased when combined with Isoniazid.
Ibuprofen Ibuprofen Ibuprofen may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Perphenazine Perphenazine The metabolism of Perphenazine can be decreased when combined with Isoniazid.
Azathioprine Azathioprine The metabolism of Azathioprine can be decreased when combined with Isoniazid.
Phentermine Phentermine The risk or severity of serotonin syndrome can be increased when Phentermine is combined with Isoniazid.
Methylphenidate Methylphenidate Methylphenidate may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Amoxapine Amoxapine The risk or severity of serotonin syndrome can be increased when Amoxapine is combined with Isoniazid.
Sulfasalazine Sulfasalazine Sulfasalazine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Hydrocortisone Hydrocortisone The serum concentration of Isoniazid can be decreased when it is combined with Hydrocortisone.
Doxorubicin Doxorubicin The metabolism of Doxorubicin can be decreased when combined with Isoniazid.
Cytarabine Cytarabine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Cytarabine.
Phenazopyridine Phenazopyridine Phenazopyridine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Carbamazepine Carbamazepine The metabolism of Carbamazepine can be decreased when combined with Isoniazid.
Methyldopa Methyldopa The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Methyldopa.
Clonidine Clonidine The metabolism of Clonidine can be decreased when combined with Isoniazid.
Hydralazine Hydralazine Isoniazid may decrease the excretion rate of Hydralazine which could result in a higher serum level.
Cimetidine Cimetidine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Cimetidine is combined with Isoniazid.
Gentamicin Injection Gentamicin Injection Gentamicin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Warfarin Warfarin The serum concentration of Warfarin can be increased when it is combined with Isoniazid.
Clonazepam Clonazepam The therapeutic efficacy of Clonazepam can be decreased when used in combination with Isoniazid.
Promethazine Promethazine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Promethazine.
Meclofenamate Meclofenamate Meclofenamic acid may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nitrofurantoin Nitrofurantoin Nitrofurantoin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Digoxin Digoxin Isoniazid may decrease the excretion rate of Digoxin which could result in a higher serum level.
Loxapine Loxapine The risk or severity of serotonin syndrome can be increased when Loxapine is combined with Isoniazid.
Chloroquine Chloroquine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Chloroquine is combined with Isoniazid.
Quinine Quinine The metabolism of Quinine can be decreased when combined with Isoniazid.
Ethosuximide Ethosuximide The metabolism of Ethosuximide can be decreased when combined with Isoniazid.
Triamterene Triamterene The metabolism of Triamterene can be decreased when combined with Isoniazid.
Lactulose Lactulose The therapeutic efficacy of Lactulose can be decreased when used in combination with Isoniazid.
Chlorothiazide Chlorothiazide Chlorothiazide may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Chlorthalidone Chlorthalidone Chlorthalidone may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Metolazone Metolazone Metolazone may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Isosorbide Isosorbide Isosorbide may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Secobarbital Secobarbital The therapeutic efficacy of Isoniazid can be decreased when used in combination with Secobarbital.
Desipramine Desipramine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Desipramine.
Amitriptyline Amitriptyline The metabolism of Amitriptyline can be decreased when combined with Isoniazid.
Imipramine Imipramine The metabolism of Imipramine can be decreased when combined with Isoniazid.
Probenecid Probenecid Isoniazid may decrease the excretion rate of Probenecid which could result in a higher serum level.
Quinidine Quinidine The metabolism of Quinidine can be decreased when combined with Isoniazid.
Procainamide Procainamide Isoniazid may decrease the excretion rate of Procainamide which could result in a higher serum level.
Disopyramide Disopyramide The metabolism of Isoniazid can be decreased when combined with Disopyramide.
Valproic Acid Valproic Acid The metabolism of Valproic acid can be decreased when combined with Isoniazid.
Tamoxifen Tamoxifen The metabolism of Tamoxifen can be decreased when combined with Isoniazid.
Butabarbital Butabarbital Butabarbital may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Liothyronine Liothyronine Liothyronine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Methimazole Methimazole Methimazole may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Propylthiouracil Propylthiouracil The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Propylthiouracil is combined with Isoniazid.
Chlorpropamide Chlorpropamide The metabolism of Chlorpropamide can be decreased when combined with Isoniazid.
Tolbutamide Tolbutamide The metabolism of Tolbutamide can be decreased when combined with Isoniazid.
Tolazamide Tolazamide The metabolism of Tolazamide can be decreased when combined with Isoniazid.
Dextromethorphan Dextromethorphan The metabolism of Dextromethorphan can be decreased when combined with Isoniazid.
Cyclobenzaprine Cyclobenzaprine The metabolism of Cyclobenzaprine can be decreased when combined with Isoniazid.
Niacin Niacin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Niacin is combined with Isoniazid.
Baclofen Baclofen The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Baclofen is combined with Isoniazid.
Chlorpheniramine Chlorpheniramine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Chlorpheniramine.
Ethambutol Ethambutol Ethambutol may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Methyclothiazide Methyclothiazide Methyclothiazide may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Hydrochlorothiazide Hydrochlorothiazide Hydrochlorothiazide may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Chlorzoxazone Chlorzoxazone The metabolism of Isoniazid can be decreased when combined with Chlorzoxazone.
Carisoprodol Carisoprodol The metabolism of Carisoprodol can be decreased when combined with Isoniazid.
Folic Acid Folic Acid Folic acid may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Disulfiram Disulfiram The risk or severity of adverse effects can be increased when Disulfiram is combined with Isoniazid.
Propranolol (Cardiovascular) Propranolol (Cardiovascular) The serum concentration of Propranolol can be increased when it is combined with Isoniazid.
Pseudoephedrine Pseudoephedrine The risk or severity of serotonin syndrome can be increased when Pseudoephedrine is combined with Isoniazid.
Nortriptyline Nortriptyline The metabolism of Nortriptyline can be decreased when combined with Isoniazid.
Spironolactone Spironolactone Spironolactone may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Amphotericin B Injection Amphotericin B Injection Amphotericin B may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Mercaptopurine Mercaptopurine The serum concentration of Mercaptopurine can be increased when it is combined with Isoniazid.
Phytonadione Phytonadione Isoniazid may decrease the excretion rate of Phylloquinone which could result in a higher serum level.
Amikacin Injection Amikacin Injection Amikacin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nadolol Nadolol Isoniazid may decrease the excretion rate of Nadolol which could result in a higher serum level.
Butorphanol Injection Butorphanol Injection The risk or severity of serotonin syndrome can be increased when Butorphanol is combined with Isoniazid.
Nalbuphine Injection Nalbuphine Injection The risk or severity of serotonin syndrome can be increased when Nalbuphine is combined with Isoniazid.
Allopurinol Allopurinol Allopurinol may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Flavoxate Flavoxate Isoniazid may decrease the excretion rate of Flavoxate which could result in a higher serum level.
Fluorouracil Injection Fluorouracil Injection The metabolism of Fluorouracil can be decreased when combined with Isoniazid.
Colchicine Colchicine The metabolism of Colchicine can be decreased when combined with Isoniazid.
Cefaclor Cefaclor Cefaclor may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cefadroxil Cefadroxil Cefadroxil may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cefazolin Injection Cefazolin Injection Cefazolin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cephalexin Cephalexin Cephalexin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cefoxitin Injection Cefoxitin Injection Cefoxitin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Dacarbazine Dacarbazine The metabolism of Dacarbazine can be decreased when combined with Isoniazid.
Acetazolamide Acetazolamide Isoniazid may increase the excretion rate of Acetazolamide which could result in a lower serum level and potentially a reduction in efficacy.
Cefotaxime Injection Cefotaxime Injection Cefotaxime may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Calcitonin Salmon Injection Calcitonin Salmon Injection Salmon calcitonin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ketoconazole Ketoconazole The serum concentration of Ketoconazole can be decreased when it is combined with Isoniazid.
Pyrantel Pyrantel Isoniazid may decrease the excretion rate of Pyrantel which could result in a higher serum level.
Thiotepa Injection Thiotepa Injection The metabolism of Thiotepa can be decreased when combined with Isoniazid.
Vincristine Injection Vincristine Injection The metabolism of Isoniazid can be decreased when combined with Vincristine.
Captopril Captopril The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Captopril.
Vinblastine Vinblastine The metabolism of Vinblastine can be decreased when combined with Isoniazid.
Ethacrynic Acid Ethacrynic Acid Etacrynic acid may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Colistimethate Injection Colistimethate Injection Colistimethate may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Metoprolol Metoprolol The metabolism of Isoniazid can be decreased when combined with Metoprolol.
Thiothixene Thiothixene The metabolism of Thiothixene can be decreased when combined with Isoniazid.
Aspirin Aspirin Acetylsalicylic acid may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Salsalate Salsalate Salsalate may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Alprazolam Alprazolam The metabolism of Alprazolam can be decreased when combined with Isoniazid.
Temazepam Temazepam Temazepam may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Triazolam Triazolam The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Triazolam is combined with Isoniazid.
Dicyclomine Dicyclomine Dicyclomine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Propantheline Propantheline Propantheline may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Trimethoprim Trimethoprim The metabolism of Trimethoprim can be decreased when combined with Isoniazid.
Diltiazem Diltiazem The metabolism of Diltiazem can be decreased when combined with Isoniazid.
Nifedipine Nifedipine The metabolism of Nifedipine can be decreased when combined with Isoniazid.
Timolol Timolol The metabolism of Timolol can be decreased when combined with Isoniazid.
Verapamil Verapamil The metabolism of Verapamil can be decreased when combined with Isoniazid.
Pindolol Pindolol The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Pindolol.
Cisplatin Injection Cisplatin Injection Isoniazid may decrease the excretion rate of Cisplatin which could result in a higher serum level.
Diflunisal Diflunisal Diflunisal may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Piroxicam Piroxicam Piroxicam may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Bumetanide Bumetanide The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Bumetanide is combined with Isoniazid.
Etoposide Etoposide The metabolism of Etoposide can be decreased when combined with Isoniazid.
Glyburide Glyburide The therapeutic efficacy of Glyburide can be decreased when used in combination with Isoniazid.
Glipizide Glipizide The metabolism of Glipizide can be decreased when combined with Isoniazid.
Indapamide Indapamide Indapamide may increase the excretion rate of Isoniazid which could result in a lower serum level and potentially a reduction in efficacy.
Amoxicillin Amoxicillin Isoniazid may decrease the excretion rate of Amoxicillin which could result in a higher serum level.
Oxacillin Injection Oxacillin Injection Oxacillin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Pentoxifylline Pentoxifylline The serum concentration of Pentoxifylline can be increased when it is combined with Isoniazid.
Pentamidine Injection Pentamidine Injection Pentamidine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ceftriaxone Injection Ceftriaxone Injection Ceftriaxone may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Labetalol Labetalol The metabolism of Isoniazid can be decreased when combined with Labetalol.
Auranofin Auranofin Isoniazid may decrease the excretion rate of Auranofin which could result in a higher serum level.
Leuprolide Injection Leuprolide Injection The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Leuprolide is combined with Isoniazid.
Gemfibrozil Gemfibrozil The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Gemfibrozil.
Guanabenz Guanabenz The metabolism of Guanabenz can be decreased when combined with Isoniazid.
Dipivefrin Ophthalmic Dipivefrin Ophthalmic Adefovir dipivoxil may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ceftazidime Injection Ceftazidime Injection Ceftazidime may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ketoprofen Ketoprofen Ketoprofen may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cefotetan Injection Cefotetan Injection Cefotetan may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Pimozide Pimozide The metabolism of Pimozide can be decreased when combined with Isoniazid.
Enalapril Enalapril The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Enalapril is combined with Isoniazid.
Flurbiprofen Flurbiprofen Flurbiprofen may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Amiodarone Amiodarone The metabolism of Amiodarone can be decreased when combined with Isoniazid.
Aztreonam Injection Aztreonam Injection Aztreonam may decrease the excretion rate of Isoniazid 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 Isoniazid.
Lovastatin Lovastatin The metabolism of Lovastatin can be decreased when combined with Isoniazid.
Ciprofloxacin Ciprofloxacin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Ciprofloxacin is combined with Isoniazid.
Mesalamine Mesalamine Mesalazine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Diclofenac Diclofenac The metabolism of Diclofenac can be decreased when combined with Isoniazid.
Fluoxetine Fluoxetine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Fluoxetine.
Clozapine Clozapine The metabolism of Isoniazid can be decreased when combined with Clozapine.
Estazolam Estazolam The therapeutic efficacy of Estazolam can be decreased when used in combination with Isoniazid.
Idarubicin Idarubicin The metabolism of Idarubicin can be decreased when combined with Isoniazid.
Ofloxacin Ofloxacin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Ofloxacin.
Didanosine Didanosine Didanosine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Pentostatin Injection Pentostatin Injection Pentostatin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Etodolac Etodolac Etodolac may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Fosinopril Fosinopril Fosinopril may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nabumetone Nabumetone Nabumetone may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Pravastatin Pravastatin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Pravastatin is combined with Isoniazid.
Simvastatin Simvastatin The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Simvastatin is combined with Isoniazid.
Teniposide Injection Teniposide Injection The metabolism of Teniposide can be decreased when combined with Isoniazid.
Itraconazole Itraconazole The serum concentration of Itraconazole can be decreased when it is combined with Isoniazid.
Lisinopril Lisinopril Lisinopril may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Oxaprozin Oxaprozin Oxaprozin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Rifabutin Rifabutin Rifabutin may increase the hepatotoxic activities of Isoniazid.
Bisoprolol Bisoprolol Bisoprolol may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Zolpidem Zolpidem The metabolism of Zolpidem can be decreased when combined with Isoniazid.
Doxazosin Doxazosin The metabolism of Doxazosin can be decreased when combined with Isoniazid.
Isradipine Isradipine Isradipine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Omeprazole Omeprazole The metabolism of Omeprazole can be decreased when combined with Isoniazid.
Cisapride Cisapride The metabolism of Cisapride can be decreased when combined with Isoniazid.
Gabapentin Gabapentin The therapeutic efficacy of Gabapentin can be decreased when used in combination with Isoniazid.
Fluvastatin Fluvastatin The metabolism of Fluvastatin can be decreased when combined with Isoniazid.
Venlafaxine Venlafaxine The metabolism of Venlafaxine can be decreased when combined with Isoniazid.
Nizatidine Nizatidine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Nizatidine is combined with Isoniazid.
Stavudine Stavudine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Stavudine is combined with Isoniazid.
Famciclovir Famciclovir The metabolism of Famciclovir can be decreased when combined with Isoniazid.
Fluvoxamine Fluvoxamine The metabolism of Fluvoxamine can be decreased when combined with Isoniazid.
Nefazodone Nefazodone The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Nefazodone.
Lamotrigine Lamotrigine The therapeutic efficacy of Isoniazid can be decreased when used in combination with Lamotrigine.
Losartan Losartan The metabolism of Losartan can be decreased when combined with Isoniazid.
Valacyclovir Valacyclovir Valaciclovir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Tramadol Tramadol The risk or severity of serotonin syndrome can be increased when Tramadol is combined with Isoniazid.
Vinorelbine Injection Vinorelbine Injection The metabolism of Vinorelbine can be decreased when combined with Isoniazid.
Carboplatin Injection Carboplatin Injection Carboplatin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Lansoprazole Lansoprazole The metabolism of Lansoprazole can be decreased when combined with Isoniazid.
Ifosfamide Injection Ifosfamide Injection The metabolism of Ifosfamide can be decreased when combined with Isoniazid.
Bupropion Bupropion The risk or severity of seizure can be increased when Isoniazid is combined with Bupropion.
Ticlopidine Ticlopidine The metabolism of Isoniazid can be decreased when combined with Ticlopidine.
Saquinavir Saquinavir The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Saquinavir.
Metformin Metformin Metformin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nisoldipine Nisoldipine Nisoldipine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Lamivudine Lamivudine The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Lamivudine is combined with Isoniazid.
Riluzole Riluzole The metabolism of Riluzole can be decreased when combined with Isoniazid.
Acarbose Acarbose Acarbose may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Glimepiride Glimepiride The metabolism of Glimepiride can be decreased when combined with Isoniazid.
Gemcitabine Injection Gemcitabine Injection Gemcitabine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Indinavir Indinavir The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Indinavir is combined with Isoniazid.
Ritonavir Ritonavir The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Ritonavir is combined with Isoniazid.
Docetaxel Injection Docetaxel Injection The metabolism of Docetaxel can be decreased when combined with Isoniazid.
Cidofovir Injection Cidofovir Injection Cidofovir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Meropenem Injection Meropenem Injection Meropenem may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Clomipramine Clomipramine The metabolism of Clomipramine can be decreased when combined with Isoniazid.
Zafirlukast Zafirlukast The metabolism of Zafirlukast can be decreased when combined with Isoniazid.
Fosfomycin Fosfomycin Fosfomycin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Mirtazapine Mirtazapine Isoniazid may increase the serotonergic activities of Mirtazapine.
Topiramate Topiramate The therapeutic efficacy of Isoniazid can be decreased when used in combination with Topiramate.
Zileuton Zileuton The metabolism of Zileuton can be decreased when combined with Isoniazid.
Valsartan Valsartan The metabolism of Valsartan can be decreased when combined with Isoniazid.
Pramipexole Pramipexole Pramipexole may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Donepezil Donepezil The metabolism of Donepezil can be decreased when combined with Isoniazid.
Azithromycin Azithromycin The metabolism of Azithromycin can be decreased when combined with Isoniazid.
Carvedilol Carvedilol The metabolism of Carvedilol can be decreased when combined with Isoniazid.
Nilutamide Nilutamide Nilutamide may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Flutamide Flutamide The metabolism of Isoniazid can be decreased when combined with Flutamide.
Selegiline Selegiline The metabolism of Selegiline can be decreased when combined with Isoniazid.
Bicalutamide Bicalutamide The metabolism of Bicalutamide can be decreased when combined with Isoniazid.
Sertraline Sertraline The metabolism of Sertraline can be decreased when combined with Isoniazid.
Propafenone Propafenone The metabolism of Propafenone can be decreased when combined with Isoniazid.
Letrozole Letrozole The risk or severity of myopathy, rhabdomyolysis, and myoglobinuria can be increased when Isoniazid is combined with Letrozole.
Irbesartan Irbesartan The metabolism of Irbesartan can be decreased when combined with Isoniazid.
Tamsulosin Tamsulosin Tamsulosin may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Ropinirole Ropinirole The risk or severity of adverse effects can be increased when Isoniazid is combined with Ropinirole.
Quetiapine Quetiapine The risk or severity of serotonin syndrome can be increased when Isoniazid is combined with Quetiapine.
Cefepime Injection Cefepime Injection Cefepime may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cefprozil Cefprozil Cefprozil may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cefpodoxime Cefpodoxime Cefpodoxime may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Cetirizine Cetirizine Cetirizine may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Paroxetine Paroxetine The metabolism of Paroxetine can be decreased when combined with Isoniazid.
Tolcapone Tolcapone Tolcapone may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Citalopram Citalopram The serum concentration of Citalopram can be increased when it is combined with Isoniazid.
Capecitabine Capecitabine The metabolism of Capecitabine can be decreased when combined with Isoniazid.
Efavirenz Efavirenz The metabolism of Efavirenz can be decreased when combined with Isoniazid.
Abacavir Abacavir Isoniazid may decrease the excretion rate of Abacavir which could result in a higher serum level.
Sildenafil Sildenafil The metabolism of Sildenafil can be decreased when combined with Isoniazid.
Celecoxib Celecoxib Celecoxib may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Rosiglitazone Rosiglitazone The metabolism of Rosiglitazone can be decreased when combined with Isoniazid.
Tolterodine Tolterodine The metabolism of Tolterodine can be decreased when combined with Isoniazid.
Thalidomide Thalidomide The metabolism of Thalidomide can be decreased when combined with Isoniazid.
Oseltamivir Oseltamivir Oseltamivir may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Balsalazide Balsalazide Balsalazide may decrease the excretion rate of Isoniazid which could result in a higher serum level.
Nateglinide Nateglinide The metabolism of Isoniazid can be decreased when combined with Nateglinide.
Levetiracetam Levetiracetam The therapeutic efficacy of Levetiracetam can be decreased when used in combination with Isoniazid.
Rabeprazole Rabeprazole The metabolism of Rabeprazole can be decreased when combined with Isoniazid.
Terbinafine Terbinafine The metabolism of Terbinafine can be decreased when combined with Isoniazid.

* This branded product is no longer on the market. Generic alternatives may be available.

Content provided by: AHFS® Patient Medication Information™. © Copyright, 2021. The American Society of Health-System Pharmacists

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