The anticonvulsant lamotrigine (Lamictal) is being used with increasing regularity for the treatment of women with bipolar disorder. Back in 2006, we reported on preliminary data indicating an increased risk of oral clefts among infants [...]
For many women with bipolar disorder, lamotrigine (Lamictal) is an effective mood stabilizer. Given its relatively favorable reproductive safety profile, lamotrigine is a reasonable option for women who require treatment with a mood stabilizer during pregnancy.
This is a paper I missed from 2014, but I think this study adds some important information to the review we posted on topiramate a few weeks ago.
Do anti-epileptic drugs increase the risk for miscarriage and/or stillbirth? Many reports have demonstrated an association between the use of antiepileptic drugs during pregnancy and increased risk of congenital malformations and pregnancy complications, including pre-eclampsia, [...]
We have previously written about studies which indicate that prenatal exposure to antiepileptic drugs (AEDs), particularly valproic acid, may adversely affect the developing fetus. Numerous studies have documented long-term effects of antiepileptic exposure on cognitive functioning: prenatal exposure to AEDs has been associated with lower IQs, as well as lower scores on tests of executive functioning, memory, verbal and nonverbal abilities, in children at 6 yeas of age (Meador KJ et al, 2012). These deficits were the most prominent in children exposed to valproic acid.
There have long been concerns regarding the use of the anticonvulsant valproate (Depakote) during pregnancy. First trimester use of valproate has been associated with a 3-5% risk of neural tube defects, as well as an increased risk of other malformations affecting the heart. In addition, recent reports have indicated that in utero exposure to valproate may also result in lower IQ.
While it is well-established that several of the older anticonvulsants, including valproate (Depakote), carry a significant teratogenic risk, less is known about the reproductive safety of the newer antiepileptic drugs (AEDs). The North American AED Pregnancy Registry was established in 1997 for pregnant women in the United States and Canada at the Massachusetts General Hospital. The purpose of the registry is to obtain and publish information on the frequency of major malformations among infants whose mothers have taken one or more AEDs during pregnancy.
After last week’s post, we received several comments regarding the use of mood stabilizers in breastfeeding women, specifically asking which is safer: lithium or lamotrigine.
Women with bipolar disorder are vulnerable to postpartum illness, and it is generally recommended that mothers continue treatment with a mood stabilizer throughout the postpartum period to reduce their risk of relapse; however, this recommendation is complicated by the all mood stabilizers are secreted into the breast milk, although their concentrations appear to vary considerably (Chaudron and Jefferson, 2000).
Women with bipolar disorder are at increased risk for recurrence of illness during pregnancy. Therefore, many women with bipolar disorder elect to continue treatment with medications during pregnancy after weighing the risks and benefits of various treatment options with their physicians. Lamotrigine (Lamictal) is an anticonvulsant used to treat bipolar disorder. While the safety data on this relatively new anticonvulsant in pregnancy is limited, pregnancy registry data suggests that lamotrigine may pose less of a risk to the developing fetus than with older anticonvulsants, such as valproate (Depakote). With lamotrigine emerging as an effective and relatively safe treatment for pregnant women with bipolar disorder, more attention is now being paid to the effects of pregnancy on lamotrigine levels.
