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Levitra 20 mg

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  • Firmer, longer-lasting erections for up to 4 hours

  • FDA-approved active ingredient (Sildenafil)

  • Starts working within 30 minutes

  • 88% of cases saw positive outcomes

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Medically Reviewed by
Dr. Akanksha Kaushal
akanksha-kaushal Dr. Akanksha, Pharm-D

Dr. Akansha is a licensed Clinical Pharmacologist with extensive expertise in pharmacovigilance, prescription analysis, drug information, and safety. She's a dedicated educator and avid learner. Dr. Akansha also reviews medical content on GoodRx Medicine, ensuring accurate pharmaceutical information is accessible to all.

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Written by
Julian Carter
julian-carter Julian Carter

Julian, an MBA in Pharmaceutical Management, brings a dynamic blend of expertise and impact with his contributions at Goodrxmedicine. His dedication and innovative spirit continue to shape a brighter future in pharmaceutical management.

About Levitra 20 mg

Levitra 20 mg is used in treating sexual impotence or Erectile Dysfunction. 

The active component of this drug is Vardenafil, which helps boost blood flow in the penis, hence causing an erection.

Bayer HealthCare Pharmaceuticals manufactures Levitra in several strengths, such as 20 mg, 40 mg, and 60 mg.

Uses of Levitra 20 mg

The primary use of Levitra 20 mg is to treat Erectile Dysfunction.

ED is a condition in which a man cannot attain and maintain an erection to get sexually intimate. 

Levitra is responsible for obtaining and keeping an erection when sexual stimulation occurs therefore treating the condition.

How 20 mg Levitra Works

The main ingredient of 20 mg Levitra is Vardenafil, a PDE5 inhibitor.

Vardenafil works by relaxing the smooth muscle that increases the blood circulation in the penile region, which helps in getting an erection.

However, it is essential to get sexually stimulated to attain an erection.

You should take this drug 30 to 60 minutes before sexual intercourse.

Levitra 20 mg

Side Effects

You might encounter mild or moderate side effects after consumption of the 20 mg variant of Levitra, such as:

  • Headache and dizziness
  • Back pain
  • Upset stomach and Diarrhea
  • Stuffy nose
  • Flushing (Redness and warmth)
  • Loss of vision and hearing
  • Shortness of breath
  • Swelling in your hands, ankles, or feet
  • Irregular heartbeat
  • Seizures
  • Prolonged and painful erection

Note: Contact your doctor immediately if you have a prolonged erection (more than 4 hours) or an allergic reaction after consuming this medication.

Dosage of 20 mg Levitra

20 mg Levitra can be taken with or without food per your physician's instructions. 

However, you should not take more than one tablet in a day.

For best results, take it 30 to 60 minutes before sexual intercourse.


Drugs Interactions

While consuming Levitra, it is best to avoid consumption of other drugs that can interact with it, such as:

  • Nitrate medications
  • Antibiotics- Clarithromycin, Erythromycin
  • Antifungal drugs
  • Low and high blood pressure medications
  • Prostate disorder treating drugs
  • HIV and AIDS medications
  • QT Prolonging drugs
  • Alpha-blockers such as Alfuzosin and Doxazosin
  • Medicines to treat cardiovascular diseases
  • Other ED tablets containing Sildenafil and Tadalafil

Diseases Interactions

You must inform your doctor if you are suffering from any disease or disorder. Avoid the consumption of this medicine in case you have:

  • Cardiovascular diseases and disorders
  • Low and high blood pressure
  • Long QT syndrome
  • Seizures
  • Kidney and liver diseases
  • Stomach ulcer
  • Blood cell disorders such as Leukemia, Multiple Myeloma, and Sickle Cell Anemia
  • Bleeding disorders
  • Retinitis Pigmentosa or any other eye disorder
  • Peyronie's disease (penis deformation due to scar tissue)

Food Interactions

Some food can interact with or reduce the effectiveness of 20 mg Levitra, which you should avoid, such as:

  • Alcohol
  • Grapefruit and grapefruit juice
  • High-fat meals


  • Keep Levitra away from children under 18 years and women.
  • Do not drive and engage in strenuous activities after consuming this drug, as it can cause dizziness.


You should keep the 20 mg variant of Levitra at a room temperature of 15 to 30 degrees away from heat, light, and moisture.

Frequently Asked Questions

How long does Levitra last after you take it?

Levitra 20 mg typically lasts up to 4 hours after consuming it. Although it entirely depends on the individual's health.

Can I take Levitra on an empty stomach?

Levitra can be consumed with or without food, but you should always consult your doctor as they will be able to instruct you better.

Will 20 mg Levitra work without getting sexually stimulated?

No, in order to get an erection, sexual stimulation needs to occur.


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