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Tadalafil

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Tadalafil structure


Tadalafil

Production Company

Lilly ICOS LLC

Chemical Name

pyrazino[1 ,2 :1,6]pyrido[3,4-b]indole-1,4-dione, 6-(1,3-benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-methyl-, (6R,12aR)-

Empirical Formula

C22H19N3O4

Molecular Weight

389.41

Functional Groups

Amides, Amines, Benzene, Ether, and Methyl

Cialis® (generic name, tadalafil) is the brand name of a drug used to treat male erectile dysfunction (impotence), developed by the biotech firm ICOS and marketed worldwide by Eli Lilly. Cialis has FDA approval and appeared in U.S. stores in December, 2003. It works by inhibiting an enzyme known as PDE5. Due to its 36-hour effect it is also known as Weekend Pill.

Chemical Information

The empirical formula for Cialis is C22H19N3O4, and its official organic name is pyrazino[1 ,2 :1,6]pyrido[3,4-b]indole-1,4-dione, 6-(1,3-benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-methyl-, (6R,12aR)-. The molecular weight is 389.41. The tablets are yellow and oval-shaped and come in 5, 10, or 20mg doses.

Current Events

Cialis has a multiyear promotional deal with professional golf's PGA TOUR. In May of 2005, the U.S. Food and Drug Administration found that Cialis could lead to vision impairment. An investigation is currently undergoing.

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