Tadalista Professional medicine is the brand name of a drug that relaxes the muscles of blood vessels to increase blood flow to a specific area of the body. Its generic name is Tadalafil. Which is used to relax the muscles of the blood vessels to increase blood flow to a specific area of the body. This medicine is only prescribed for men 18 years of age or older. Alcohol should not be consumed while taking this medicine as its side effects are directly felt in your body. The effect of this medicine usually lasts for 3-4 hours.