Tadalista 20 is recommended for men who are unable to sustain an erection with their partner for an extended amount of time. This drug eliminates the condition of male impotence. The active ingredient in this product is Tadalafil. This medicine should be taken with one glass of water, either before or after food. This medication is used 30 minutes or one hour before sexual intercourse. Tadalista 20 medication has an impact that lasts 36 hours.