PDE5 inhibitor - Wikipedia

PDE5 inhibitors are vasodilating drugs that treat erectile dysfunction and pulmonary hypertension. Learn about their medical uses, contraindications, adverse effects, drug interactions, and examples such as sildenafil (Viagra).

Sildenafil - Simple English Wikipedia, the free encyclopedia

Viagra structure ball & stick model. Sildenafil is an aphrodisiac.It is a medication that is also called Viagra, Revatio and (in the Indian subcontinent) Caverta.. Sildenafil makes the blood vessels become wider. This lowers the blood pressure.Sildenafil mostly works in the penis and in the lungs.This medicine increases blood flow to the penis. This helps the penis become erect during sexual ...

Viagra | drug | Britannica

Viagra, trade name of the first oral drug for male impotence, introduced by the pharmaceutical company Pfizer, Inc., in 1998. Also known by the chemical name sildenafil citrate, it is one of a category of drugs known as phosphodiesterase-5 inhibitors. See also PDE-5