Drug combinations
| First drug | Second drugs |
|---|---|
| ACE, angiotensin converting inhibitor; NSAID, non-steroidal anti-inflammatory drug. | |
| Drug–drug interactions | |
| Allopurinol | Mercaptopurine |
| Alprazolam | Fluconazole, itraconazole, ketoconazole (oral), miconazole (oral) |
| Carbamazepine | Azithromycin, clarithromycin, clozapine, dirithromycin, erythromycin, isoniazid, propoxyphene, verapamil |
| Cimetidine | Phenytoin, propranolol, warfarin |
| Cyclosporine | Azithromycin, clarithromycin, dirithromycin, erythromycin |
| Dextroamphetamine | Selegiline |
| Digoxin | Azithromycin, clarithromycin, dirithromycin, erythromycin |
| Fluconazole | Atorvastatin, cerivastatin, fluvastatin, lovastatin, pravastatin, simvastatin |
| Gemfibrozil | Atorvastatin, cerivastatin, fluvastatin, lovastatin, pravastatin, simvastatin |
| Hydrochlorothiazide | Colchicine |
| Ketoconazole (oral) | Atorvastatin, cerivastatin, fluvastatin, lovastatin, pravastatin, simvastatin |
| Lithium carbonate | Acetazolamide, hydrochlorothiazide |
| Meperidine | Phenelzine |
| Methotrexate | Aspirin, choline magnesium trisalicylate, methocarbamol |
| Sildenafil | Erythrityl tetranitrate, isosorbide, nitroglycerin |
| Tacrolimus | Azithromycin, clarithromycin, dirithromycin, erythromycin |
| Theophylline | Ciprofloxacin, gatifloxacin, levofloxacin, lomefloxacin, moxifloxacin, norfloxacin, ofloxacin, sparfloxacin |
| Triazolam | Fluconazole, itraconazole, ketoconazole (oral), miconazole (oral) |
| Warfarin | Levothyroxine, liothyronine |
| Duplicate drugs | |
| ACE inhibitors | ACE inhibitors |
| Beta blockers | Beta blockers |
| Calcium channel blockers | Calcium channel blockers |
| HMG CoA reductase inhibitors | HMG CoA reductase inhibitors |
| NSAIDs | COX II inhibitors |
| Sulfonylureas | Sulfonylureas |