Phenytoin for Epilepsy

Common side effects of phenytoin include:

• Swollen, tender gums.
• Growth of facial and body hair.
• Enlarged or rough facial features.
• Acne.
• Skin rash.

High levels of phenytoin in the body may also cause:

• Drowsiness.
• Double vision.
• Dizziness.
• Tremors or shaking.
• Decreased coordination.
• Confusion and inability to concentrate.
• Reference Osteoporosis Opens New Window (when taken for months to years).

The U.S. Food and Drug Administration (FDA) has issued a warning on antiepileptic medicines and the risk of suicide and suicidal thoughts. The FDA does not recommend that people stop using these medicines. Instead, people who take antiepileptic medicine should be watched closely for Reference warning signs of suicide. People who take antiepileptic medicine and who are worried about this side effect should talk to a doctor.

See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)

© 1995-2011, Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Reference Terms of Use. Reference How this information was developed to help you make better health decisions.