sildenafil

"Viagra" redirects here. For the Russian/Ukrainian girl group also known as "Via Gra", see Nu Virgos Sildenafil citrate, sold under the names Viagra, Revatio and under various other names, is a drug used to treat male erectile dysfunction (impotence) and pulmonary arterial hypertension (PAH), developed by the pharmaceutical company Pfizer. Its primary competitors on the market are tadalafil (Cialis), and vardenafil (Levitra).
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Sildenafil /sil·den·a·fil/ a phosphodiesterase inhibitor that relaxes the smooth muscle of the penis, facilitating blood flow to the corpus [more]Sildenafil - Community and Resources

Noun
1. virility drug (trade name Viagra) used to treat erectile dysfunction in men
(synonym) Viagra
(hypernym) virility drug, anit-impotence drug
(classification) trade name, brand name, brand, marque

A substance that is used to treat erectile dysfunction. Sildenafil relaxes the smooth muscle of the penis to allow increased blood flow and erection. It belongs to the family of drugs called phosphodiesterase inhibitors. Also called Viagra.