Tadalista 20mg is a drug that helps men to become sexually aroused. This medicine is used to treat male sexual problems like impotence and erectile dysfunction. Tadalista 20mg medicine contains an ingredient called Tadalafil which helps in relaxing the tissues of the penis in men. This medicine works effectively when taken 30 minutes or 1 hour before intercourse. You can take this medicine before or after food. The effect of this medicine lasts for 36 hours.