Viagra

American

[vahy-ag-ruh] / vaɪˈæg rə /

Pharmacology, Trademark.

a brand of sildenafil citrate, used to treat impotence.

Viagra British

/ viː-, vaɪˈæɡrə /

noun

a drug, sildenafil, that allows increased blood flow into the penis; used to treat erectile dysfunction in men

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sildenafil, the active ingredient in Viagra, may offer new hope for people living with Leigh syndrome, a rare and severe childhood disorder.

From Science Daily • Mar. 31, 2026

Two large studies based on health-insurance databases found that those who took Viagra had a lower risk of developing Alzheimer’s.

From MarketWatch • Mar. 7, 2026

The Covid vaccine gave Pfizer a shot in the arm in 2021 and 2022 after the patents on its blockbuster drugs Lyrica and Viagra expired.

From The Wall Street Journal • Oct. 5, 2025

Recently the band was tapped to headline a show at Golden Gate Park accompanied by the Deftones, the Mars Volta, Viagra Boys and Vows on August 17.

From Los Angeles Times • May 9, 2024

Repurposed drug candidates targeting these processes that are being studied by scientists range from Viagra to the diabetes medication metformin.

From Salon • Sep. 13, 2023

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023