Viagra Drug Interactions

Viagra drug interactions can change how your body metabolizes the medicines and cause changes in blood pressure, among other things. Some of the drugs that can potentially interact with Viagra include cimetidine, ritonavir, and alpha blockers. To reduce your risk of drug interactions with Viagra, it is important to talk with your doctor about any drug interactions that may apply to you.

Viagra Information

An Introduction to Viagra Drug Interactions

A number of other medicines can potentially interact with Viagra^® (sildenafil citrate). Some possible Viagra drug interactions can include:

Cimetidine (Tagamet^®)
Ritonavir (Norvir^®) and other protease inhibitors
Amlodipine (Norvasc^®, Caduet^®, Lotrel^®)
Alpha blockers for high blood pressure (HBP) or benign prostatic hyperplasia (BPH), such as doxazosin (Cardura^®), prazosin (Minipress^®), and terazosin (Hytrin^®)
Erythromycin
Saquinavir (Fortovase^®)
Antifungals, such as ketoconazole (Nizoral^®), fluconazole (Diflucan^®), or itraconazole (Sporanox^®)
Nitrates, with nitroglycerin being the most common type.

Viagra Interactions Explained

Cimetidine

In previous research studies, when cimetidine and Viagra were given at the same time, the levels of Viagra in the blood increased significantly. To avoid this possible Viagra drug interaction, it is recommended that you discuss alternatives with your healthcare provider prior to taking Viagra.

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