Viagra Composition

Viagra (sildenafil citrate) is supplied as blue, film-coated, rounded-diamond shaped tablets containing sildenafil citrate equivalent to the nominally indicated amount of sildenafil as follows:

Viagra 25 mg: Each tablet contains sildenafil citrate equivalent to 25 mg sildenafil.

Viagra 50 mg: Each tablet contains sildenafil citrate equivalent to 50 mg sildenafil.

Viagra 100 mg: Each tablet contains sildenafil citrate equivalent to 100 mg sildenafil.

Sildenafil citrate is a white to off-white crystalline powder with a solubility of 3.5 mg/ml in water and a molecular weight of 666.7g/mol. In addition to the active ingredient sildenafil citrate, each viagra tablet consists of the following active ingredients: microcrystalline cellulose, calcium hydrogen phosphate(anhydrous),croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, indigo carmine aluminium lake.

Viagra is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5).

Sildenafil Citrate is designated chemically as 1-[[3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine citrate and has the following structural formula:

Recommended Storage : Viagra should be stored at controlled room temperature, 15 degree celsius to 30 degree celsius (59 degree Fahrenheit to 86 degree Fahrenheit).