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Generic Levitra is a phosphodiesterase inhibitor that works by helping the blood flow into the penis to achieve and maintain an erection.
Penile erection is caused by the engorgement of the penis with blood. This engorgement occurs when the blood vessels delivering blood to the penis increase in size and increase the delivery of blood to the penis. At the same time, the blood vessels carrying blood away from the penis decrease in size and decrease the removal of blood from the penis. Sexual stimulation that leads to the engorgement and erection causes the production and release of nitric oxide in the penis. Nitric oxide then activates the enzyme, guanylate cyclase to produce cyclic guanosine monophosphate (cGMP). The cGMP is primarily responsible for increasing and decreasing the size of the blood vessels carrying blood to and from the penis, respectively. Vardenafil prevents an enzyme called phosphodiesterase-5 from destroying cGMP so that cGMP persists longer. The longer cGMP persists, the more prolonged the engorgement of the penis.

Active Ingredients: vardenafil HCl
Inactive Ingredients: microcrystalline cellulose, crospovidone, colloidal silicon dioxide, magnesium stearate, hypromellose, polyethylene glycol, titanium dioxide, yellow ferric oxide, and red ferric oxide.

Generic Levitra is used to treat erectile dysfunction (impotence). Generic Levitra may also be used for purposes other than those listed in this medication guide.

Take Generic Levitra exactly as it was prescribed for you. Do not take it in larger doses or for longer than recommended by your doctor. Take each dose with a full glass of water. Generic Levitra can be taken with or without food. Generic Levitra is usually taken only when needed, up to 60 minutes before sexual activity. The medication can help achieve an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor's instructions. Do not take Generic Levitra more than once a day. Allow 24 hours to pass between doses. Contact your doctor or seek emergency medical attention if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis.
Store Generic Levitra at 77 degrees F (25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Levitra out of the reach of children and away from pets.

Do not use Generic Levitra if:
• you are allergic to any ingredient in Generic Levitra
• you have been advised by your doctor to avoid sexual activity because of heart problems
• you have certain heart problems (eg, unstable angina, severe heart failure), low blood pressure, or uncontrolled high blood pressure
• you have certain hereditary degenerative eye problems (eg, retinitis pigmentosa)
• you have severe liver problems or severe kidney problems that require dialysis
• you have had a heart attack, stroke, or life-threatening irregular heartbeat within the past 6 months.

Since Generic Levitra is used as needed, you are not likely to be on a dosing schedule.

Seek emergency medical attention if you think you have taken too much of Generic Levitra. Symptoms of a Generic Levitra overdose may include back pain, muscle pain, or vision problems.

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome: Dizziness; flushing; headache; heartburn; stuffy or runny nose; upset stomach.
Seek medical attention right away if any of these SEVERE side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); back or muscle pain; chest pain; fainting; prolonged, painful erection; ringing in the ears; severe or persistent dizziness; severe or persistent vision changes; sudden hearing loss.

The breakdown and elimination of Generic Levitra from the body is inhibited by erythromycin, ketoconazole (Nizoral), itraconazole (Sporanox), indinavir (Crixivan) and ritonavir (Norvir). Therefore, these drugs increase the concentration of vardenafil in the blood. If these drugs are being used at the same time as Generic Levitra, the dose of Generic Levitra should be reduced in order to avoid side effects from Generic Levitra.
Generic Levitra reduces the concentration of ritonavir and indinavir and may reduce the effect these drugs.
Generic Levitra increases the heart rate and also exaggerates the blood pressure lowering effects of nitrates (e.g. nitroglycerine). In patients who take nitrates for chest pain (angina), Generic Levitra could cause chest pain by increasing heart rate and lowering blood pressure. Therefore, patients with angina should not use Generic Levitra. Generic Levitra also exaggerates the blood pressure lowering effects of alpha-blocking drugs, e.g. terazosin (Hytrin), and should not be used by individuals who also use alpha-blockers.

If you have any questions about Generic Levitra , please talk with your doctor, pharmacist, or other health care provider.
Generic Levitra is to be used only by the patient for whom it is prescribed. Do not share it with other people.
If your symptoms do not improve or if they become worse, check with your doctor.