Vidalista 40Mg contains 40mg of the active ingredient Tadalafil. This drug works by preventing the action of the enzyme phosphodiesterase-5 to widen or relax blood vessels and improve blood flow to the penis. Increased blood flow leads to an erection. The drug will only assist in the process of erection, but sexual stimulation is needed in order for it to work. Tadalafil also helps BPH by relaxing the muscles in the prostate and bladder area to improve blood flow. This action will help the easy flow of urine to address symptoms of BPH.