SPL Set ID: a0acad71-8ae3-2827-e053-2995a90a20b3
1 drug(s) with this SPL Set ID
Tadalafil is a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Tadalafil has the empirical formula C 22 H 19 N 3 O 4 representing a molecular weight of 389.41. The structural formula is: 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. Tadalafil tablets, USP are available as almond-shaped, biconvex, film coated tablets in different sizes and different shades of yellow for oral administration. Each tablet contains 2.5 mg, 5 mg, or 20 mg of tadalafil and the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, sorbitan monostearate, magnesium stearate, hypromellose, iron oxide red (in 2.5 mg tablets only), iron oxide yellow, talc, titanium dioxide, and triacetin. Chemical Structure