Tadalafil is a drug that is used to treat erectile dysfunction. It belongs to the group of phosphodiesterase type 5 inhibitors (PDE-5). Tadalafil helps to achieve and maintain the erection necessary for sexual intercourse.
The mechanism of action of tadalafil is based on blocking the enzyme PDE-5, which destroys cGMP (cyclic guanosine monophosphate) in the cavernous body of the penis. As a result, cGMP levels rise, smooth muscles relax, and blood flows more easily into the penis.
Tadalafil is available in the form of tablets with different dosages. It is usually taken 30 minutes before the alleged sexual activity. It is important to note that tadalafil is not a drug for the treatment of sexually transmitted diseases or for increasing potency in healthy men.