CompositionCapsules of white color, size No. 0; the contents of the capsules are white or white with a grayish tint powder. sildenafil (in the form of citrate) 50 mg - "- 100 mg Excipients: lactose, microcrystalline cellulose, magnesium stearate. - blister packs (1) - cardboard packs. Pharmacotherapeutic group Drug used for erectile dysfunction Pharmacological action Drug used for erectile dysfunction Selective inhibitor of cGMP-specific phosphodiesterase type 5 (PDE 5), which is responsible for the breakdown of cGMP in the cavernous body of the penis Actively enhances the relaxing effect of nitric oxide (NO) on the smooth muscles of the cavernous body and increases blood flow in the penis.When the NO-cGMP circuit is activated, observed during sexual arousal, inhibition of PDE 5 leads to an increase in cGMP in the cavernous body.The pharmacological effect is achieved only in the presence of sexual stimulation.Activity against PDE-5 10-10,000 times greater than activity against other PDE isoforms (1, 2, 3, 4, 6). Product facts: Form: Capsules; Dosage: 100mg; Pack size: 100mg.