Avana 100mg tablet contains the active ingredient Avanafil, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. The mechanism of action of Avanafil is similar to other drugs in the PDE5 inhibitor class, such as sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra).

During ****ual arousal, the release of nitric oxide (NO) in the corpus cavernosum of the **** leads to the activation of an enzyme called guanylate cyclase. Guanylate cyclase catalyzes the conversion of guanosine triphosphate (GTP) into cyclic guanosine monophosphate (cGMP). This results in the relaxation of smooth muscle cells within the penile arteries and corpus cavernosum, leading to increased blood flow into the **** and the subsequent erection.