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Drug Description
DESCRIPTION
CIALIS (tadalafil), an oral treatment for erectile dysfunction, is a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Tadalafil has the empirical formula C22H19N3O4 representing a molecular weight of 389.41. The chemical designation 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)-. It is a crystalline solid that is practically insoluble in water and very slightly soluble in ethanol. CIALIS is available as film-coated, almond-shaped tablets for oral administration. Text Continues Below
Each tablet contains 5, 10, or 20 mg of tadalafil and the following inactive ingredients: croscarmellose sodium, hydroxypropyl cellulose, hypromellose, iron oxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate, talc, titanium dioxide, and triacetin.
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