Tadacip 20 mg is a medication used to treat erectile dysfunction (ED). It contains the active ingredient Tadalafil, which is a phosphodiesterase type 5 (PDE5) inhibitor. Tadalafil helps increase blood flow to the penis during sexual stimulation, allowing men to achieve and maintain an erection. Tadacip 20 mg is typically taken orally with water, approximately 30 minutes to 1 hour before sexual activity. Sexual stimulation is necessary for the medication to be effective.