Vidalista 40 uses an effective dose of tadalafil as its main ingredient. It is a very effective and FDA approved drug that gives your body and mind the determination to fight erectile dysfunction. When it comes to erectile dysfunction (impotence) in men, Vidalista 40mg, the tadalafil pill used to treat infertility, provides pleasure like no other. Vidalista-40 is a particularly effective prescription drug in the treatment of erectile dysfunction. Tadalafil is the active ingredient in Vidalista 20 , making it a PDE5-restricted drug. It is an erectile dysfunction drug that is generally recommended by professionals to treat erectile dysfunction (impotence).