Tadalafil (20mg/ 40mg/ 60mg) is a drug that is used to treat Erectile Dysfunction in men. Erectile dysfunction is a huge problem that men face not only later in their life but at an early age as well. It is frustrating and a big barricade to maintain a healthy relationship. It is a strong drug that helps give men a long, strong and hard erections that lasts for upto 4 hours. You can purchase it from an online pharmacy to have a happy and content sexual life.