These Vidalista 20 mg are effective in treating ED because they increase the levels of cGMP in blood vessels around the penis. The increased levels of cGMP relax the smooth muscle cells in those vessels and widen them to make it easier for blood to flow to the penis.

Phosphodiesterase type 5 (PDE5) inhibitors are a group of medicines that work to improve erectile dysfunction and prostate enlargement. They are usually used in conjunction with other medications, including nitrates or other drugs for pulmonary arterial hypertension.

The drug also decreases the amount of blood that reaches the optic nerve, which can lead to a sudden loss of vision in one eye. This condition is called non-arteritic anterior ischemic optic neuropathy or NAION. This condition can be a serious problem and should be reported to your healthcare professional right away.

Moreover, some men who take PDE5 inhibitors have problems with hearing and melanoma, which is a cancer of the skin that may spread to other parts of the body. These side effects are often more severe than the usual rashes and headaches, so you should talk to your doctor about them.