Vidalista 20 pill is a drug used to treat male sexual problems, such as erectile dysfunction. ED is a sexual disorder in men that causes the inability to get and maintain a strong erection. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. A strong erection can be obtained by using this medicine about 30 to 40 minutes before sex. This medicine should be used once in 24 hours.