Vidalista 80 is known for its high efficacy in treating ED. It's considered one of the longer-lasting ED medications, providing a longer window of opportunity for sexual activity compared to some other PDE5 inhibitors. Tadalafil, the active ingredient in Vidalista 80, is a phosphodiesterase type 5 (PDE5) inhibitor. It works by increasing blood flow to the penis during sexual stimulation, which helps men achieve and maintain erections.