Levitra belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. By blocking the action of the PDE5 enzyme, Levitra enhances the effects of nitric oxide, a natural chemical the body produces in response to sexual stimulation. This leads to improved blood flow to the penis and facilitates an erection. Available at Darazseller.com Free Delivery in Pakistan Cash Back Guarantee Helpline: 0300_7234797