Tadalista 20 mg is a medication used to treat erectile dysfunction in males. Tadalafil is one of the ingredients of this drug. This medication works by boosting blood flow to tissues. This medication should be taken 30 minutes before sexual intercourse to allow for a longer period of intimacy with your spouse. Tadalista 20 mg medication has a 36-day duration of action. This medication can be taken on an empty stomach or after meals. This medication can also be taken with water; however, do not break or chew the medication.