Vidalista 20 includes tadalafil, a medication often used to treat erectile dysfunction. It works by increasing blood flow to the penis during sexual stimulation, allowing men to develop and sustain an erection. Tadalafil is a PDE5 inhibitor, which means it can have an impact for up to 36 hours. Vidalista 20 does not increase sexual desire and will not produce an erection until stimulated. To ensure safety, please take it as prescribed by a healthcare expert and avoid taking it with nitrate medications.