SPL Set ID: 2582414d-0ef3-403e-84e8-1d6c812e7eb1
1 drug(s) with this SPL Set ID
Sildenafil tablets USP, phosphodiesterase-5 (PDE-5) inhibitor, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type-5 (PDE-5). Sildenafil is also marketed as VIAGRA ® (sildenafil citrate tablets) for erectile dysfunction. Sildenafil citrate, USP is designated chemically as 1-[[3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1 H -pyrazolo [4,3- d ] pyrimidin-5-yl)-4-ethoxyphenyl] sulfonyl]-4-methylpiperazine citrate and has the following structural formula: C 22 H 30 N 6 O 4 S•C 6 H 8 O 7 M.W. 666.7 Sildenafil citrate, USP is a white to off-white crystalline powder with a solubility of 3.5 mg/mL in water. Sildenafil citrate, USP is formulated as white, film-coated, unscored, round biconvex tablets equivalent to 20 mg of sildenafil for oral administration. In addition to the active ingredient, sildenafil citrate, USP, each tablet contains the following inactive ingredients: croscarmellose sodium, dibasic calcium phosphate anhydrous, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol - partially hydrolyzed, talc, and titanium dioxide. sildenafil citrate structural formula