Preconception or pregnancy considerations with antiseizure medications.

• A. Antiseizure meds vary in teratogenic risk (valproate highest); ensure folic acid supplementation; use lowest effective dose and monitor levels; avoid or limit valproate if possible.
• B. Valproate has the lowest teratogenic risk; no folic acid needed.
• C. All antiseizure meds have equal teratogenic risk and dose does not matter.
• D. Pregnancy does not affect antiseizure management.

Answer: (A)

Managing antiseizure medications around conception and during pregnancy focuses on balancing seizure control with fetal safety. Different drugs carry different fetal risks, with valproate showing the highest risk for birth defects and developmental problems. The goal is to use the lowest effective dose, minimize exposure to multiple drugs when possible, and start folic acid supplementation before conception and continue through early pregnancy to help reduce neural tube defect risk. Because pregnancy changes drug processing, levels can shift and may require close monitoring and dose adjustments to maintain seizure control without unnecessary exposure. If valproate is necessary, it should be used at the lowest effective dose and, if possible, avoided in favor of safer alternatives.