Vidalista 40 mg is an excellent medicine for erectile dysfunction. This drug contains a major ingredient called tadalafil. The tadalafil in this drug increases blood flow to the penis and gives a strong erection to men. This drug contains about 60 mg of tadalafil. Men can get a strong erection by taking this medicine about 30-40 minutes before intercourse. This medicine should be taken with normal water. This drug is only for men 18 years of age or older. This medicine should be taken only once in 24 hours.