Tadarise 5 medicine is used to treat erectile dysfunction (impotence) in men, which is the inability to achieve or maintain an erect penis suitable for sexual activity, due to insufficient blood flow to the penis. This drug relaxes the penile blood vessels and increases blood flow and causes an erection, which is a natural response to sexual arousal. It should be taken within an hour of planned intercourse and in most cases, it helps you get an erection in about 30 minutes which will last for about 4 hours if you are sexually aroused.