Tadarise 20 is a powerful drug used to treat erectile dysfunction or impotence in men. The main ingredient in this drug is tadalafil, which works by increasing blood flow to the penile area. When the penis is full of blood flow, you can have sex easily because the penis stays erect for longer during sexual intercourse. Thus, in this way you can achieve a long and strong erection during sexual intercourse. This drug should be taken at least 40-50 minutes before sexual activity. This helps you to have desirable and pleasurable sex.