What medications affect Viagra?

Viagra should not be taken with similar medications for ED therapies such as: tadalafil (Cialis), vardenafil (Levitra) or (sildenafil) Kamagra.

Viagra should not be taken if you are also using a nitrate drug for chest pain or heart problems, in this case consult your doctor. Nitrates list includes: nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, Minitran, Deponit, Transderm-Nitro), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket), or recreational drugs such as amyl nitrate or nitrite (“poppers”).

Before taking Viagra, tell your doctor about all the medications you use especially if you use:

  • bosentan (Tracleer);
  • cimetidine (Tagamet, Tagamet HB);
  • conivaptan (Vaprisol);
  • diclofenac (Arthrotec, Cataflam, Voltaren, Flector Patch, Solareze);
  • imatinib (Gleevec);
  • isoniazid (for treating tuberculosis);
  • rifampin (Rifadin, Rimactane);
  • an antidepressant such as nefazodone;
  • an antibiotic such as clarithromycin (Biaxin), dalfopristin/quinupristin (Synercid), erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin) or telithromycin (Ketek);
  • an antifungal medication such as clotrimazole (Mycelex Troche), itraconazole (Sporanox), ketoconazole (Nizoral), or voriconazole (Vfend);
  • heart or blood pressure medication such as diltiazem (Cardizem, Dilacor, Tiazac), doxazosin (Cardura), nicardipine (Cardene), quinidine (Quinaglute, Quinidex, Quin-Release), or verapamil (Calan, Covera, Isoptin,Verelan); or
  • HIV/AIDS medicine such as atazanavir (Reyataz), delavirdine (Rescriptor), fosamprenavir (Lexiva), indinavir (Crixivan), nelfinavir (Viracept), saquinavir (Invirase), or ritonavir (Norvir).

Remember that this list is not full and there may be other drugs that can affect Viagra. Tell your doctor if you take vitamins, minerals, herbal products, and drugs prescribed by other doctors.

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