Sildisoft tablets contain sildenafil citrate, which is the active ingredient also found in Viagra. Sildenafil citrate belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. These tablets are primarily used to treat erectile dysfunction (ED) in men. When a man is sexually aroused, nitric oxide is released in the erectile tissue of the penis. Nitric oxide activates an enzyme called guanylate cyclase, which increases levels of cyclic guanosine monophosphate (cGMP). This leads to relaxation of the smooth muscles in the blood vessels of the penis, allowing them to widen and increase blood flow. https://www.genericday.com/sildisoft-tablets.html

Zhewitra 40 mg contains the active ingredient vardenafil, which is a phosphodiesterase type 5 (PDE5) inhibitor. It is primarily used to treat erectile dysfunction (ED) in men. The mechanism of action of Zhewitra 40 mg is similar to other medications that belong to the same class of drugs, such as sildenafil (Viagra) and tadalafil (Cialis). During sexual arousal, the release of nitric oxide (NO) in the penis triggers the production of cyclic guanosine monophosphate (cGMP). This chemical relaxes the smooth muscles of the blood vessels in the erectile tissue of the penis, allowing increased blood flow into the penile arteries. https://www.genericday.com/zhewitra-40-mg.html