Tadarise Pro 20 mg Tadalafil is a drug for men with erectile dysfunction or erectile dysfunction If and when allowed to use it, practically every man can achieve a quality erection and therefore have better sex. The main ingredient in this drug is tadalafil, which works by dilating blood in the penis and relaxing the muscles. This medicine is recommended only for men aged 18 or older. Cold drinks or alcohol should not be consumed while taking this medicine as it slows down the effect of the medicine and its side effects are seen on your body.