Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.
Blood disorders: Blood disorders, although infrequent, may be serious and have been reported to be associated with the use of ethosuximide. You will probably have periodic blood tests when taking this medication.
Drowsiness/reduced alertness: Ethosuximide may impair the mental or physical abilities required for potentially dangerous activities such as driving or operating machinery. People taking this medication should determine how it affects them before undertaking such activities.
Kidney or liver function: People with impaired kidney or liver function should discuss with their doctor the risks and benefits of taking this medication.
Lupus: Cases of systemic lupus erythematosus (SLE) have been reported with the use of ethosuximide.
Pregnancy: Women subject to major seizures should not stop taking this medication during pregnancy. For women subject to minor seizures, the risk of stopping the medication prior to or during pregnancy should be weighed against the risk of birth defects. If you become pregnant while taking this medication, contact your doctor right away.
Breast-feeding: Women who take ethosuximide should not breast-feed their infants.
Children: The safety and effectiveness of this medication have not been established for children under 3 years of age.