Topiramate use early in pregnancy and the risk of oral clefts

To assess the relative risk of oral clefts associated with maternal use of high and low doses of topiramate during the first trimester for epilepsy and nonepilepsy indications.This population-based study nested in the US 2000-2010 Medicaid Analytic eXtract included a cohort of 1,360,101 pregnant women with a live-born infant enrolled in Medicaid from 3 months before conception through 1 month after delivery. Oral clefts were defined as the...