Sildigra 100 mg belongs to a class of medications called PDE5 inhibitors. It works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which is responsible for the breakdown of a chemical called cyclic GMP (cGMP). When sexual arousal occurs, increased cGMP levels allow the smooth muscles in the penis to relax, leading to increased blood flow and an erection. By blocking PDE5, Sildigra helps maintain higher levels of cGMP, improving erectile function.

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