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What is Levitra?

Levitra, also known as vardenafil, helps in relaxing muscles found in the walls of blood vessels and increases blood flow to particular areas of the body. This drug helps treat erectile dysfunction (impotence).

Important Information

When Levitra is combined with certain other medications, it can cause a sudden and severe drop in blood pressure. You should avoid taking vardenafil if you are also taking riociguat (Adempas) or a nitrate medication such as nitroglycerin.

Make sure to contact your doctor or seek emergency medical help if your erection is painful or lasts longer than 4 hours. Penile damage can result from a prolonged erection (priapism). If you experience unexpected vision loss while taking Levitra, stop using it immediately and seek emergency medical attention.

You should not take Levitra if you are also taking a nitrate drug for chest pain or heart problems, such as nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, or some recreational drugs such as poppers. When Levitra is combined with nitrate medication, it can cause a sudden and severe drop in blood pressure.

Stop at once and call your doctor if you feel dizzy or nauseated during sexual activity or if you have pain, numbness, or tingling in your chest, arms, neck, or jaw. You could be experiencing a serious side effect.

What to know before taking Levitra?

You should avoid taking Levitra if you are allergic to vardenafil or if you are taking other medications to treat pulmonary arterial hypertension, such as riociguat.

You should stay away from vardenafil if you are also taking nitrate medication to treat chest pain or heart problems. Some of the nitrate drugs include nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Nitrates can also be found in recreational drugs like amyl nitrate or nitrite.  Taking Levitra with nitrate medication can result in a sudden and severe drop in blood pressure.

Levitra may not be safe for you if you have diseases such as:

  • a stroke, heart attack, or congestive heart failure
  • seizures
  • heart disease, heart rhythm problems
  • long QT syndrome
  • blood cell disorders such as sickle cell anemia, multiple myeloma, or leukemia
  • hearing or vision problems, vision loss
  • a bleeding disorder such as hemophilia
  • a physical deformity of the penis
  • a stomach ulcer
  • an eye disorder such as retinitis pigmentosa
  • if you have been advised not to engage in sexual intercourse for health reasons
  • hearing or vision problems, vision loss
  • high or low blood pressure

Levitra can help in reducing the blood flow to the optic nerve of the eye, resulting in sudden vision loss.

This occurred in a small number of people, the majority of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or specific pre-existing eye problems, as well as those who smoked or were over the age of 50. It is unknown if vardenafil is the actual cause of vision loss.

Levitra is not intended for female use, and its effects during pregnancy or breastfeeding are unknown.

How to take Levitra?

Take Levitra with or without food as prescribed by your doctor. Before you buy Levitra online, read all medication guides and follow all directions on your prescription label.

You should take Levitra only when needed, about 60 minutes before sexual activity. When sexual stimulation occurs, the medication can help you get an erection. You may not get an erection by taking a pill.

Call your doctor or get emergency medical attention if your erection is painful or lasts longer than four hours. Penile damage can occur as a result of a prolonged erection (priapism).

Staxyn (vardenafil disintegrating tablets) should not be used as a substitute for Levitra (vardenafil regular tablets). Use only the medication form and strength prescribed by your doctor to avoid medication errors.

Levitra dosage

Adult Dose for Erectile Dysfunction

The initial dose is 10 mg by mouth once a day, as needed, about 60 minutes before sexual activity. Depending on efficacy and tolerability, increase to 20 mg or decrease to 5 mg. The maximum daily dose is 20 mg.

Patients on stable alpha-blocker therapy: The initial dose is 5 mg orally once daily.


Call for medical help if you have overdose symptoms. Overdose of Levitra may lead to back or muscle pain, as well as abnormal vision.

What to avoid while using Levitra?

Grapefruit may interact with vardenafil, causing unwanted side effects. Avoid using grapefruit juice and products.

Alcohol consumption can increase certain vardenafil side effects.

You should avoid using any other medication to treat impotence unless your doctor instructs you otherwise.

Levitra side effects

Common Levitra side effects may include:

  • stuffy nose, sinus pain
  • flushing (warmth, redness, or tingly feeling)
  • upset stomach
  • headache, dizziness
  • back pain

The serious side effects of Levitra may include:

  • shortness of breath
  • sudden hearing loss
  • seizure (convulsions)
  • swelling in your hands, ankles, or feet
  • irregular heartbeat
  • a light-headed feeling
  • penis erection that may last longer than four hours or is painful

If you have any of the following symptoms, stop taking Levitra and seek emergency medical attention:

  • vision changes or sudden vision loss
  • heart attack symptoms – chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating
  • penis erection that may last longer than four hours or is painful

What drugs can interact with Levitra?

You should not combine Levitra with other medications such as avanafil (Stendra), sildenafil (Viagra), or tadalafil (Cialis). Inform your doctor about any other erectile dysfunction medications you are taking. You should also check the drug interactions before you buy Levitra online.

Inform your doctor about all of your other medications, especially:

  • antifungal medicine such as itraconazole, ketoconazole
  • antibiotics such as clarithromycin or erythromycin
  • heart rhythm medicine, including amiodarone, dronedarone, procainamide, quinidine, or sotalol
  • medicines to treat a prostate disorder or high blood pressure such as alfuzosin, doxazosin, prazosin, silodosin, terazosin, or tamsulosin
  • HIV/AIDS medicine, including atazanavir, indinavir, ritonavir, saquinavir, and others

Some medications may interfere with the removal of vardenafil from your body, thereby altering how vardenafil works. These are some examples:

  • macrolide antibiotics such as clarithromycin, erythromycin
  • azole antifungals such as itraconazole, ketoconazole
  • protease inhibitors for hepatitis C virus such as telaprevir or boceprevir
  • rifampin
  • HIV protease inhibitors such as indinavir, ritonavir