The drug vidalista 10 is commonly taken by men with erectile dysfunction or impotence. As directed by the doctor, take this pill half to one hour before sexual activity. One tablet should be taken with water. This medicine will take effect for 4-5 hours. Take the tablet whole, and do not chew or crush the pill. Store ED pills at room temperature or in a dry place and avoid placing the medicine under direct sunlight. Keep ED medicine away from children.