Submitted by György Chityil ... on Fri, 01/19/2018 - 18:41 Hierarchy: NounDescription: {{pharmaceutical drug}} A drug, whose citrate is marketed as Viagra; a treatment for erectile dysfunction.Ngram: sildenafilNgram Text: sildenafilSource: WiktionaryIssue: 0Wiktionary tag: pharmaceutical drugNgram Count: 1