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Peganone Prescription
Generic Name: ethotoin (ETH oh toyn)
Brand Name: Peganone
Physician reviewed Peganone patient information - includes Peganone description, dosage and directions.
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Peganone Drug Information:

Peganone is an anti-epileptic medicine, also called an anticonvulsant. Peganone is used alone or in combination with other medicines to treat seizures in adults and children who are at least 1 year old. Peganone may also be used for purposes not listed in this medication guide. You should not use Peganone if you have liver disease or a blood cell disorder (such as anemia, hemophilia, and others). You should not use Peganone if you are allergic to Peganone or if you have: liver disease; or a blood cell disorder (such as anemia, hemophilia, and others). Learn more

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Peganone Side Effects

Note: This document contains side effect information about ethotoin. Some of the dosage forms listed on this page may not apply to the brand name Peganone.

Applies to ethotoin: oral tablet

Side effects requiring immediate medical attention

Along with its needed effects, ethotoin (the active ingredient contained in Peganone) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking ethotoin:


  • Enlarged gums
  • shakiness and unsteady walk
  • unsteadiness, trembling, or other problems with muscle control or coordination

Incidence not known

  • Blistering, peeling, or loosening of the skin
  • chest pain
  • cough
  • diarrhea
  • fever and chills
  • general feeling of discomfort or illness
  • hair loss
  • headaches
  • hives or itching
  • joint or muscle pain
  • numbness
  • red, irritated eyes
  • red skin lesions, often with a purple center
  • shortness of breath or troubled breathing
  • skin rash
  • sore throat
  • sores, ulcers, or white spots in the mouth or on the lips
  • swollen glands
  • swollen, painful, or tender lymph glands in the neck, armpit, or groin
  • unusual tiredness or weakness

Get emergency help immediately if any of the following symptoms of overdose occur while taking ethotoin:

Symptoms of overdose

  • Blurred or loss of vision
  • change in consciousness
  • disturbed color perception
  • double vision
  • drowsiness
  • halos around lights
  • loss of consciousness
  • nausea
  • night blindness
  • overbright appearance of lights
  • tunnel vision
Side effects not requiring immediate medical attention

Some side effects of ethotoin may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

  • Dizziness
  • sleeplessness
  • trouble sleeping
  • unable to sleep
  • uncontrolled eye movements
  • vomiting

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

More about Peganone (ethotoin)
  • Dosage Information
  • Drug Images
  • Drug Interactions
  • Pricing & Coupons
  • En Español
  • 1 Review
  • Drug class: hydantoin anticonvulsants
Consumer resources
  • Peganone
Professional resources
Related treatment guides
  • Epilepsy
  • Seizure Prevention
  • Seizures

Editorial References and Review

Medically reviewed by USARx EDITORIAL TEAM Last updated on 1/1/2020.

Source: Drugs.com Peganone (www.drugs.com/mtm/peganone.html).