Anticoagulation Service For Health Professionals
Warfarin-Drug Interaction
Drugs that can increase PT/ INR |
Drugs that can decrease PT/ INR |
| Generic | Brand | Generic | Brand |
| Acetominophen Allopurinol Amiodarone Ampicillin Aspirin Azithromycin Cefamandole Cefazolin Cefoperazone Cefotetan Cefoxitin Cefprozil Ceftriaxone Celebrex Chloral Hydrate Chloramphenicol Cimetidine Ciprofloxacin Clarithromycin Clofibrate Danazol Dexamethasone Dextrothyroxine Diclofenac Dicloxacillin Dirithromycin Disulfiram Erythromycin Ethotoin Etodolac Fenoprofen Fluconazole Fluxymesterone Flubiprofen Fluvastatin Gemfibrozil Glipizide Ibuprofen Indomethacin Irbesartan Isoniazid Itraconazole Ketoconazole Ketoprofen Ketolorac Lansoprazole Levamisole Levofloxacin Levothyroxine Liothyronine Liotrix Losartan Lovastatin Meclofenamate Mefenamic Acid Mephenytoin Methicillin Methimazole Methyl Salicylate Methyltestosterone Metroindazole Mezlocillin Miconazole Nabumetone Nafcillin Nalidixic Acid Naproxen Norfloxacin Omeprazole Oxacillin Oxandrin Oxymetholone Oxyphenbutazon Oxaprozin Pantoprazole Penicillin Penicillin G Pentoxifyline Phenylbutazone Phenytoin Piperacillin Piroxicam Propafenone Propylthiouracil Quinidine Quinine Simvastatin Stanazol Sulfamethizole Sulfamethoxazole Sulindac Sulfinpyrazone Sulfisoxazole Tamoxifen Ticarcillin Disodium Thyroid Ticlopidine Tolmetin Tmp-Sulfa Torsemide Troleandomycin Vitamin E Vioxx Voriconazole |
Tylenol Zyloprim Cordarone Amcil, Omnipen Ecotrin Zithromax Mandol Ancef, Kefzol Cefobid Cefotan Mefoxin Cefzil Rocephin Celecoxib Noctec Chloromycetin Tagamet Cipro, Ciloxan Biaxin Atromid-S Danocrine Decadron Choloxin Voltaren Dynapen, Pathocil Dynabac Antabuse E-Mycin, Eryc, Ery-Tab Peganone Lodine Nalfon Diflucan Halotestin Ansaid Lescol Lopid Glucotrol Advil, Motrin Indocin Avapro Laniazid Sporanox Nizoral Orudis Acular, Toradol Prevacid Ergamisol Levaquin Synthroid Cytomel Euthroid Cozaar Mevacor Meclomen Ponstel Mesantoin Staphcillin Tapazole (decreased PT also reported) Ben-Gay Oreton Methyl Flagyl Mezlin Monistat Relafen Nafcil NegGram Aleve, Anaprox, Naprelan, Naprosyn Noroxin Prilosec Bactocill, Prostaphlin Oxandrolone Anadrol 50 Tandearil Daypro Protonix (IV only) Pfizepen, Pentid Trental Butazolidin Dilantin (decreased PT also reported) Pipracil Feldene Rythmol (many manufacturers decreased PT also reported) Cardioquin (many manufacturers) Zocor Winstrol Thiosulfil Forte Gantanol Clinoril Anturane Gantrisin Nolvadex Ticar Ticlid Armour (many manufacturers) Demadex Tolectin Bactrim Tao Aquasol E Refecoxib Vfend |
Amobarbitol Aminoglutethimide Aprobarbitol Barbiturates Butabarbital Carbamazepine Cholestyramine Ethchlorvynol Grisofulvin Haloperidol Mephobarbitol Methimazole Oral Contraceptives Pentobarbitol Phenobarbitol Phenytoin Primidone Propylthiouracil Rifabutin Rifampin Secobarbitol Spironolactone Sucralfate Trazodone Vitamin K |
Amytal Cyiraden Alurate Seconal Butisol, Butalan Tegretol Questran Placidly Grifulvin V, Fulvicin P/G Haldol Mebaral Tapazole (inc PT) Nembutal Luminal Dilantin (inc Pt) Mysoline (many manufacturers, increase Pt) Mycobutin Rifasin, Rimactane Seconal Aldactone Carafate Desyrel |
| * This is not a comprehensive medication list, please check other resoures | |||
