Recent Examples of tadalafil from the Web
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).
That product was found by FDA lab testing to contain both sildenafil and tadalafil, another active ingredient in prescription drugs used to treat ED.
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medical Definition of tadalafil
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