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When and How to Take Ethosuximide

Some general considerations for when and how to take this medicine include the following:
  • Ethosuximide comes in capsule form and is taken by mouth once or twice daily. It is also available in a syrup form.
  • The drug can be taken with or without food. If it bothers your stomach, try taking it with food.
  • Ethosuximide should be taken at the same time(s) each day to maintain an even level of the drug in your blood.
  • For the medication to work properly, it must be taken as prescribed. It will not work if you stop taking it.
  • Do not stop taking ethosuximide without first discussing it with your healthcare provider (see Zarontin Withdrawal).

Dosing Information

The dose of ethosuximide that your healthcare provider recommends will vary, depending on a number of factors, including:
  • Your age and weight
  • Other medications you may be taking
  • Other medical conditions you may have.
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
(Click Ethosuximide Dosing for more information.)

Drug Interactions

Ethosuximide can potentially interact with a few other medicines (see Drug Interactions With Ethosuximide).

What If I Take an Overdose of Ethosuximide?

People who take too much of this medication may have overdose symptoms that could include:
  • Nausea
  • Vomiting
  • Drowsiness
  • Unconsciousness
  • Difficulty breathing
  • Coma.
If you happen to overdose, seek immediate medical attention.
(Click Zarontin Overdose for more information.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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