Tadalafil, the active component of Vidalista 80 mg, improves blood flow to the penis by relaxing the muscles in the penile blood vessels, thereby treating erectile dysfunction. It also treats pulmonary hypertension by making it easier for blood to pass through the arteries in the lungs. While chewing or crushing the tablet, make sure you consume it whole with milk or water. You should never give the tablet to a stranger. Always advise them to see a doctor. Never take medicine that has gone bad. Verify the expiration date and other relevant information on the insert or leaflet before swallowing the tablet.