Vidalista 10 mg is a tadalafil medicine marketed for the treatment of erectile dysfunction (ED). Tadalafil belongs to the phosphodiesterase type 5 (PDE5) inhibitor class. It works by increasing blood flow to the penis during sexual stimulation, helping a man achieve and maintain an erection. Tadalafil is known for its relatively long duration of action. Its effects may remain available for up to approximately 36 hours, although individual responses vary. This does not mean that an erection should last for 36 hours.