Vidalista Black 80 includes tadalafil, a PDE5 inhibitor used to treat erectile dysfunction. It works by boosting blood flow to the penis during sexual stimulation, allowing men to attain and maintain erections. Vidalista 80 may have a longer duration of action than other ED medications, with effects that could last up to 36 hours. However, it does not boost sexual desire or create an erection unless stimulated. The medication should be taken exactly as prescribed by a healthcare expert.