1. Sildelafil citrateis a drug used to treat erectile dysfunction (impotence) in males and pulmonary arterial hypertension (PAH).2. Sildelafil citrate is the raw material of3. Sildelafil is a kind of male sex enhancer drug.4. Sildelafil is the first drug patented for use of erectile dysfunction.5. Sildelafil treats erectile dys function and works by relaxing muscles and increases blood flow to particular areas of the body.6. Its effects last up to four hours.