ta·​dal·​a·​fil | \tə-ˈda-lə-ˌfil \

Definition of tadalafil 

: a drug C22H19N3O4 that is used to treat erectile dysfunction and benign prostatic hyperplasia and functions similarly to sildenafil

Note: Tadalafil is marketed under the trademark Cialis.

Examples of tadalafil in a Sentence

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With that focus, FDA conducted lab analysis on HelloCig’s e-liquids, finding products that contained tadalafil (Cialis) and/or sildenafil (Viagra). Beth Mole, Ars Technica, "E-cig co. put Viagra, Cialis in vape liquids—the FDA is throbbing mad," 12 Oct. 2018 That product was found by FDA lab testing to contain both sildenafil and tadalafil, another active ingredient in prescription drugs used to treat ED. Beth Mole, Ars Technica, "FDA not amused by coffee laced with Viagra-like drugs, issues recall," 21 July 2017 Tough to imagine an easier medication to build demand around, and Viagra was unchallenged in the marketplace until 2003 with the introduction of GlaxoSmithKline's Levitra (for the drug vardenafil) and then Cialis (tadalafil). Phil Rosenthal, chicagotribune.com, "NFL telecasts losing those awkward Viagra, Cialis commercials," 13 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tadalafil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of tadalafil

2001, in the meaning defined above

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14 Nov 2018

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The first known use of tadalafil was in 2001

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ta·​dal·​a·​fil | \tə-ˈdal-ə-ˌfil \

Medical Definition of tadalafil 

: a drug C22H19N3O4 taken orally to treat erectile dysfunction, benign prostatic hyperplasia, and hypertension of the lungs and that functions similarly to sildenafil

Note: Tadalafil is marketed under the trademark Cialis to treat erectile dysfunction and benign prostatic hyperplasia and under the trademark Adcirca to treat pulmonary arterial hypertension.

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