Tadalis is a medication used to treat men with erectile dysfunction. This drug is one of the most effective treatments for impotence. The active ingredient in this medication is Tadalafil. This medication helps to improve blood circulation to the penis. It is intended for men 18 years of age and older. It helps men to get a strong erection during sexual activity. It is recommended to take this medication 30 minutes prior to any sexual activity. It should only be used once a day. It takes about 30 minutes for the effects of this medication to take effect. It has a half-life of 4-6 hours. You should follow your doctor's instructions.