Sildenafil is used in the treatment of erectile dysfunction, pulmonary arterial hypertension (PAH) and benign prostatic hyperplasia.

Sildenafil is a phosphodiesterase-5 (PDE-5) inhibitor. It works by relaxing the blood vessels in your penis, thereby increasing blood flow into the penis on sexual stimulation. This helps you achieve and maintain a hard, erect penis suitable for sexual activity.

Headache, Nosebleeds, Insomnia (difficulty in sleeping), Erythema (skin redness), Nasal congestion (stuffy nose), Dizziness, Nausea, Dyspepsia, Hot flushes, Shortness of breath, Visual disturbance