Levitra (vardenafil) is intended for the treatment of ED, or erectile dysfunction. For Levitra to work you need to take it about an hour before sexual activity, with some food or without. Take the tablet whole without crushing or chewing it. Avoid taking Levitra with other over-the-counter or prescription drugs unless otherwise recommended by your health care provider, as they can increase, decrease or alter its effects. Tell your doctor if you are planning to use alprostadil, sildenafil, or tadalafil (impotence drugs), amiodarone, erythromycin, indinavir, itraconazole, ketoconazole, nifedipine, procainamide, quinidine, ritonavir or sotalol. This is not the complete list of drugs that can affect Levitra. For more information you can talk to your doctor or pharmacist.

If your erection lasts for longer than 4 hours and is painful seek emergency medical assistance to avoid permanent damage to the tissues of your penis. Certain medical conditions can increase the risk of developing priapism, including sickle cell anemia, multiple myeloma and leukemia. These and any other conditions are to be reported to your health care provider before Levitra is prescribed.