Viagra Medicine: Uses, Benefits, and Important Information

Viagra, also known by its generic name Sildenafil, is a prescription medicine primarily used to treat erectile dysfunction (ED) in men. It works by relaxing blood vessels and improving blood flow to the penis, which helps achieve and maintain an erection during sexual activity. In some cases, Sildenafil may also be prescribed for pulmonary arterial hypertension (PAH) to improve exercise capacity.

How Viagra Works

Viagra belongs to a class of drugs called PDE5 inhibitors. It enhances the natural response to sexual stimulation by increasing blood flow, but it does not cause arousal on its own.

Usage and Dosage

Viagra is usually taken about 30 minutes to 1 hour before sexual activity. The effects may last up to 4 hours. It should not be taken more than once per day. Dosage depends on individual health conditions and a doctor’s recommendation.

Safety Information

Viagra should only be taken under medical supervision. It is not suitable for men who use nitrate medications (often prescribed for chest pain) due to the risk of dangerous drops in blood pressure. Common side effects may include headache, flushing, dizziness, and indigestion.