Tadagra Prof 20 mg works by blocking the enzyme phosphodiesterase type 5 (PDE5). Normally, PDE5 breaks down cyclic guanosine monophosphate (cGMP), a chemical that relaxes smooth muscles in blood vessels. When PDE5 is blocked, cGMP levels stay higher for longer, leading to improved blood flow in penile tissues during sexual arousal. Tadagra Prof is an orodispersible (fast-dissolving) tablet, which dissolves in the mouth without water and may be absorbed slightly faster than standard tablets. It usually begins working within 30 to 60 minutes, and its effects can last up to 24 to 36 hours. https://www.genericday.com/tadagra-prof-20-mg.html