Levitra (vardenafil) belongs to a class of medications called
phosphodiesterase (PDE) inhibitors. Vardenafil relaxes muscles found in the
walls of blood vessels and increases blood flow to particular areas of the
body.

Levitra works by increasing blood flow to the penis during sexual stimulation.
This increased blood flow can cause an erection.

Levitra is used to treat erectile dysfunction (impotence; inability to get or
keep an erection) in men.

Levitra does not cure erectile dysfunction or increase sexual desire. This
medicine does not prevent pregnancy or the spread of sexually transmitted
diseases such as human immunodeficiency virus (HIV).





Get emergency medical help if you have **signs of an allergic reaction to
Levitra:** hives; difficult breathing; swelling of your face, lips, tongue, or
throat.

**Stop using Levitra and get emergency medical help if you have:**

  * **heart attack symptoms** \- chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating;

  * vision changes or sudden vision loss; or

  * erection is painful or lasts longer than 4 hours (prolonged erection can damage the penis).

**Levitra may cause serious side effects. Stop using Levitra and call your
doctor at once if you have:**

  * ringing in your ears, or sudden hearing loss;

  * irregular heartbeat;

  * swelling in your hands, ankles, or feet;

  * shortness of breath;

  * a light-headed feeling, like you might pass out; or

  * seizure (convulsions).

**Common Levitra side effects may include:**

  * flushing (sudden warmth, redness, or tingly feeling);

  * stuffy nose, sinus pain;

  * headache, dizziness;

  * upset stomach; or

  * back pain.

This is not a complete list of side effects and others may occur. Call your
doctor for medical advice about side effects. You may report side effects to
FDA at 1-800-FDA-1088.

Levitra side effects (more detail)