Men who are unable to obtain sexual erections for an extended period of time are suffering from impotence and erectile dysfunction. Tadalista 20mg medication should be used to treat this condition. Tadalafil is the active ingredient in this drug. This medication both relaxes and strengthens blood arteries in males. Tadalista 20mg medication is administered in a variety of dosages. This medication is used 30 minutes or 1 hour before sexual activity. The effect of this medication is observed for 36 hours.