Detailed Description of Business Vidalista Black 80 is a high-strength erectile dysfunction (ED) medication that contains tadalafil 80 mg. It is used by men who have difficulty achieving or maintaining an erection sufficient for sexual activity. Tadalafil, the active ingredient, is a PDE5 inhibitor that increases blood flow to the penis by relaxing blood vessels. This helps produce a natural erection when a man is sexually aroused. It does not work without stimulation. Vidalista Black 80 is a very high dose and is typically used when lower doses are not effective. Its effects can last up to 36 hours, offering a longer window of sexual readiness, but it must not be taken more than once every 24 to 36 hours.