ZOLTAN is the trademark of Sildenafil Citrate, an agent used as impotence therapy in males.

Each ZOLTAN 25, 50, and 100 Tablet contains Sildenafil 25, 50, and 100 mg, respectively, as Sildenafil Citrate.

CHEMISTRY

Sildenafil citrate is: 1-[[3-(4,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo [4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine Citrate.