Levitra 10 mg is a generic popular drug that is prescribed to treat erectile dysfunction, also known as ED. Before buying Levitra online take your doctor's prescription and if the doctor suggests it for your health then you can use it. Levitra 10 mg will not cure erectile dysfunction, but it can help you to enjoy a healthy sexual relationship with your partner. It belongs to the PDE 5 inhibitors group and its active ingredient is Vardenafil. So Levitra 10 mg works by blocking the PDE5 enzyme, which increases blood flow by slowing enzymes down and relaxes the muscles which helps men achieve and maintain a hard erection when sexually excited.