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Published on: May 16, 2019
Valproic acid in epilepsy : pregnancy-related issues
Pierre Genton1, Franck Semah, Eugen Trinka
1Centre Saint-Paul, Hôpital Gastaut, Marseille, France. piergen@aol.com
Drug Safety
|February 4, 2006
Summary
Valproic acid (sodium valproate) is a common epilepsy treatment. While most pregnancies are successful, valproic acid use in women of childbearing potential carries risks of major congenital malformations and developmental delays.
Area of Science:
- Neurology
- Pharmacology
- Obstetrics
Background:
- Valproic acid (sodium valproate) is a first-line antiepileptic drug.
- Use in women of childbearing potential presents specific risks.
- Pregnancy outcomes in women with epilepsy are generally favorable.
Purpose of the Study:
- To review the risks and benefits of valproic acid during pregnancy.
- To inform management strategies for pregnant women with epilepsy on valproic acid.
- To highlight the importance of planned pregnancies and risk-benefit discussions.
Main Methods:
- Review of patient registries and case series data.
- Analysis of pharmacokinetic interactions with oral contraceptives.
- Assessment of risks for major congenital malformations and developmental delay.
Main Results:
- Valproic acid is not associated with significant pharmacokinetic interactions with oral contraceptives.
- Consistent findings show an elevated risk of major congenital malformations with valproic acid.
- Developmental delay, including low verbal IQ, has been reported in children exposed in utero.
Conclusions:
- Pregnancies in women on valproic acid require careful planning and discussion of benefit-risk ratios.
- Minimizing fetal risk involves using the lowest effective monotherapy dose (<1000 mg/day), folic acid supplementation, and antenatal monitoring.
- Regular counseling is essential for informed decision-making and optimizing pregnancy outcomes.
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