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Related terms
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    Related terms

      • It is used to treat impotence.
      • Avanafil helps response to stimulation.


      How to take

      • Take 30 minutes before sex.
      • Take with or without food. Take with food if it causes an upset stomach.

      Missed Dose

      • This drug is taken on an as needed basis. Do not take more often than every 24 hours unless told to do so by your doctor.


      • Store at room temperature.
      • Protect from water. Do not store in a bathroom or kitchen.



      • Sometimes drugs are not safe when you take them with certain other drugs. Taking them together can cause bad side effects. This is one of those drugs. Be sure to talk to your doctor about all the drugs you take.


      • This drug is not for use in women.
      • If you have an allergy to avanafil or any other part of this drug.
      • Tell your doctor if you are allergic to any drugs. Make sure to tell about the allergy and what signs you had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
      • If you use drugs called "poppers" like amyl nitrite and butyl nitrite.
      • If you have been told not to have sex by your doctor.


      • If you have bleeding problems, talk with your doctor.
      • If you have any eye problems, talk with your doctor.
      • If you have heart disease, talk with your doctor.
      • If you have high blood pressure, talk with your doctor.
      • If you have kidney disease and are on dialysis, talk with your doctor.
      • If you have liver disease, talk with your doctor.
      • If you have low blood pressure, talk with your doctor.
      • If you have had a stroke within the last 6 months, talk with your doctor.
      • If you have had a stomach ulcer, talk with your doctor.
      • Check all drugs you are taking with your doctor. This drug may not mix well with some other drugs.
      • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
      • Do not take this drug with other drugs used to treat a change in sex ability.
      • Avoid grapefruit and grapefruit juice.
      • Limit your drinking of wine, beer, or mixed drinks.
      • To protect from diseases caused by having sex, use a latex condom.

      Side Effects

      • Dizziness.
      • Flushing. Wearing layers of clothes or summer clothes and staying in cool places may help.
      • Headache.
      • Nose stuffiness.
      • Sore throat.
      • Back pain.
      • Loss of eyesight. This can be long-lasting.

      Contact a healthcare provider

      • If you think there was an overdose, call your local poison control center or ER right away.
      • Signs of a very bad reaction to the drug. These include wheezing; chest tightness; fever; itching; bad cough; blue or gray skin color; seizures; or swelling of face, lips, tongue, or throat.
      • Erection that lasts more than 4 hours.
      • Chest pain or pressure or a fast heartbeat.
      • Very bad dizziness or passing out.
      • Sudden change in eyesight, eye pain, or irritation.
      • Change in hearing.
      • Any rash.
      • Side effect or health problem is not better or you are feeling worse.

      General Statements

      • If you have a very bad allergy, wear an allergy ID at all times.
      • Do not share your drugs with others and do not take anyone else's drugs.
      • Keep all drugs out of the reach of children and pets.
      • Most drugs may be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.
      • In Canada, take any unused drugs to the pharmacy. Also, visit to learn about the right way to get rid of unused drugs.
      • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
      • Call your doctor for help with any side effects. If in the U.S., you may also call the FDA at 1-800-FDA-1088 or if in Canada, you may also call Health Canada's Vigilance Program at 1-866-234-2345.
      • Talk with the doctor before starting any new drug, including OTC, natural products, or vitamins.
      • Read the package insert for more details.

      Author information
      • Copyright © 1978-2013 Lexi-Comp Inc. All rights reserved.

      Copyright © 2011 Natural Standard (

      The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.

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