Vidalista 40 is a drug used to treat erectile dysfunction or impotence. One ingredient in this drug called tadafil helps increase blood flow to the penis. Take one tablet with water and do not tear, chew or break the tablet. There are also side effects of this medicine so take this medicine as advised by the doctor. You can take this medicine before or after a meal. The effect of this medicine lasts for 4 to 6 hours. Take this medicine 30 minutes before intercourse. So you can enjoy sex with your partner. You can visit pharmev.com for more information.