Vidalista Black 80 is a high-strength medication containing tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction (ED) in men. As with other tadalafil-containing medications, Vidalista Black 80 typically starts working within 30 minutes to an hour after ingestion. Its effects can last for up to 36 hours, allowing for a longer window of opportunity for sexual activity. If you experience severe or persistent side effects, seek medical attention promptly.