Tadalista , which contains tadalafil, is one drug that is commonly used to treat men who experience erectile dysfunction during sexual activity.Men who have this problem should see a doctor right away because insufficient blood flow in the penis is the cause.It is recommended to take tadalista orally. Take this medication an hour before engaging in any sexual activity. You should not take it more than once every 24 hours because its effects won't be felt for six hours.