Sildenafil is used to treat men with inability to achieve and maintain penile erection sufficient for satisfactory sexual performance, and for the treatment of increased pressure in the blood vessels of lung (pulmonary arterial hypertension).
How it works
Sildenafil acts by relaxing the blood vessels in the penis, thereby increasing blood flow through the penis when sexually excited. It also widens and relaxes the blood vessels in the lung decreasing the blood pressure in the lungs.
Common side effects
And headache., And visual disturbances., Epistaxis, Nasal congestion, Diarrhea; flushing, Rhinitis, And insomnia, Dyspepsia