Pregnancy Exposure Registry
There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to
antidepressants during pregnancy. Healthcare providers are encouraged to register patients by calling the
National Pregnancy Registry for Antidepressants at 1-844-405-6185 or visiting online at
womensmentalhealth.org/clnical-and-research-programs/pregnancyregistry/antidepressants
Risk Summary
Available data from published epidemiologic studies and postmarketing reports have not established an
increased risk of major birth defects or miscarriage. There are risks of persistent pulmonary hypertension of
the newborn (PPHN) (see Data) and poor neonatal adaptation (see Clinical Considerations) with exposure
to selective serotonin reuptake inhibitors (SSRIs), including escitalopram oxalate, during pregnancy. There
are risks associated with untreated depression in pregnancy (see Clinical Considerations).
In animal reproduction studies, both escitalopram and racemic citalopram have been shown to have
adverse effects on embryo/fetal and postnatal development, including fetal structural abnormalities, when
administered at doses greater than human therapeutic doses (see Data).
The estimated background risk of major birth defects and miscarriage for the indicated population is
unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the
U.S. general population, the estimated background risk of major birth defects and miscarriage in the
clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.
Clinical Considerations
Disease-associated maternal risk and/or embryo/fetal risk
Women who discontinue antidepressants are more likely to experience a relapse of major depression than
women who continue antidepressants. This finding is from a prospective longitudinal study of 201
pregnant women with a history of major depression, who were euthymic and taking antidepressants at the
beginning of pregnancy. Consider the risk of untreated depression when discontinuing or changing
treatment with antidepressant medication during pregnancy and postpartum.
Fetal/Neonatal adverse reactions
Neonates exposed to SSRIs or SNRIs, including escitalopram oxalate, late in third trimester have
developed complications requiring prolonged hospitalization, respiratory support, and tube feeding. Such
complications can arise immediately upon delivery. Reported clinical findings have included respiratory
distress, cyanosis, apnea, seizures, temperature instability, feeding difficulty, vomiting, hypoglycemia,
hypotonia, hypertonia, hyperreflexia, tremor, jitteriness, irritability, and constant crying. These features are
consistent with either a direct toxic effect of SSRIs and SNRIs or, possibly, a drug discontinuation
syndrome. It should be noted that, in some cases, the clinical picture is consistent with serotonin
syndrome [see Warnings and Precautions (5.2)].
Data
Human Data
Exposure to SSRIs, particularly later in pregnancy, may increase the risk for PPHN. PPHN occurs in 1 to 2
per 1000 live births in the general populations and is associated with substantial neonatal morbidity and
mortality.
Animal Data
In a rat embryo/fetal development study, oral administration of escitalopram (56, 112, or 150 mg/kg/day)
to pregnant animals during the period of organogenesis resulted in decreased fetal body weight and
associated delays in ossification at the two higher doses [approximately ≥ 55 times the maximum
recommended human dose (MRHD) of 20 mg/day on a mg/m2 basis]. Maternal toxicity (clinical signs and
decreased body weight gain and food consumption), mild at 56 mg/kg/day, was present at all dose levels.
The developmental no-effect dose of 56 mg/kg/day is approximately 27 times the MRHD of 20 mg on a
mg/m2 basis. No malformations were observed at any of the doses tested (as high as 73 times the MRHD
on a mg/m2 basis).
When female rats were treated with escitalopram (6, 12, 24, or 48 mg/kg/day) during pregnancy and
through weaning, slightly increased offspring mortality and growth retardation were noted at 48
mg/kg/day which is approximately 23 times the MRHD of 20 mg on a mg/m2 basis. Slight maternal toxicity
(clinical signs and decreased body weight gain and food consumption) was seen at this dose. Slightly
increased offspring mortality was also seen at 24 mg/kg/day. The no-effect dose was 12 mg/kg/day which
is approximately 6 times the MRHD of 20 mg on a mg/m2 basis.
In two rat embryo/fetal development studies, oral administration of racemic citalopram (32, 56, or 112
mg/kg/day) to pregnant animals during the period of organogenesis resulted in decreased embryo/fetal
growth and survival and an increased incidence of fetal abnormalities (including cardiovascular and
skeletal defects) at the high dose, which is approximately 18 times the MRHD of 60 mg/day on a mg/m2
basis. This dose was also associated with maternal toxicity (clinical signs, decreased body weight gain).
The developmental no-effect dose was 56 mg/kg/day is approximately 9 times the MRHD on a mg/m2
basis. In a rabbit study, no adverse effects on embryo/fetal development were observed at doses of
racemic citalopram of up to 16 mg/kg/day, or approximately 5 times the MRHD on a mg/m2 basis. Thus,
developmental effects of racemic citalopram were observed at a maternally toxic dose in the rat and were
not observed in the rabbit.
When female rats were treated with racemic citalopram (4.8, 12.8, or 32 mg/kg/day) from late gestation
through weaning, increased offspring mortality during the first 4 days after birth and persistent offspring
growth retardation were observed at the highest dose, which is approximately 5 times the MRHD of 60 mg
on a mg/m2 basis. The no-effect dose was 12.8 mg/kg/day is approximately 2 times the MRHD on a mg/m2
basis. Similar effects on offspring mortality and growth were seen when dams were treated throughout
gestation and early lactation at doses ≥ 24 mg/kg/day, approximately 4 times the MRHD on a mg/m2 basis.
A no-effect dose was not determined in that study.