Submitted by György Chityil ... on Sat, 01/20/2018 - 00:57 Hierarchy: NounDescription: {{pharmaceutical drug}} The citrate salt of sildenafil, marketed as Viagra, a treatment for erectile dysfunction.Ngram: sildenafil citrateNgram Text: sildenafil citrateSource: WiktionaryIssue: 0Wiktionary tag: pharmaceutical drugNgram Count: 2