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Valproate Products: Drug Safety Communication - Risk of Impaired Cognitive Development in Children Exposed In Utero (During Pregnancy)
Including valproate sodium (Depacon), divalproex sodium (Depakote, Depakote CP, and Depakote ER), valproic acid (Depakene and Stavzor), and their generics
AUDIENCE: OBGYN, Neurology, Psychiatry
ISSUE: FDA notified healthcare professionals that children born to mothers who take the anti-seizure medication valproate sodium or related products (valproic acid and divalproex sodium) during pregnancy have an increased risk of lower cognitive test scores than children exposed to other anti-seizure medications during pregnancy. This conclusion is based on the results of epidemiologic studies that show that children born to mothers who took valproate sodium or related products throughout their pregnancy tend to score lower on cognitive tests (IQ and other tests) than children born to mothers who took other anti-seizure medications during pregnancy. See the Drug Safety Communication for a data summary and additional information.
BACKGROUND: In 2009, the agency warned against use of valproate during pregnancy because of the risk for neural tube defects. Valproate products are FDA-approved drugs to treat seizures, and manic or mixed episodes associated with bipolar disorder (manic-depressive disorder), and to prevent migraine headaches. They are also used off-label (for unapproved uses) for other conditions, particularly for other psychiatric conditions.
RECOMMENDATION: Healthcare professionals should inform women of childbearing age of the increased risk for adverse effects on cognitive development with prenatal valproate exposure, and should continue to counsel women of childbearing potential taking valproate about the increased risk of major malformations, including neural tube defects, when valproate is used during pregnancy. In addition, healthcare professionals should weigh the benefits and risks of valproate when prescribing this drug to women of childbearing age, particularly when treating a condition not usually associated with permanent injury or death. Alternative medications that have a lower risk of adverse birth outcomes should be considered. Patients should not stop taking valproate without talking to a healthcare professional.
Healthcare professionals and patients are encouraged to report adverse events or side effects related to the use of these products to the FDA's MedWatch Safety Information and Adverse Event Reporting Program. If you become pregnant while taking valproate, you should talk to your healthcare professional about registering with the North American Antiepileptic Drug Pregnancy Registry. You can enroll in this registry by calling 1-888-233-2334. The purpose of this registry is to collect additional information about the safety of antiepileptic drugs during pregnancy. Information about the North American Drug Pregnancy Registry can be found at http://www.massgeneral.org/aed/.
Previous MedWatch Alert - Risk of Neural Tube and Other Birth Defects
[12/03/2009 - MedWatch - FDA]