Question 1

What do medical sources say about Amitriptyline (Elavil, Vanatrip) during pregnancy?

Accepted Answer

1st Trimester: MotherToBaby reports that a small number of human studies have not found a higher chance of birth defects with amitriptyline used for depression; the DailyMed label says adequate, well-controlled studies in pregnant women are lacking. Chan et al. (2024) found no overall association between individual antidepressants and major malformations in a Hong Kong cohort that included 148 first-trimester amitriptyline-only exposures. Phillips et al. (2026) found higher miscarriage odds among women with migraine using amitriptyline; MotherToBaby says the overall chance is not known, and the authors call for more work to understand the cause. The DailyMed label's boxed warning states: “Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents and young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders.” It also says: “Patients of all ages who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or unusual changes in behavior.” Ask your provider about your situation. 2nd Trimester: MotherToBaby says it is not known whether amitriptyline raises the chance of preterm delivery or low birth weight; the label also notes that adequate controlled pregnancy studies are lacking. Palmsten et al. (2013) found a preeclampsia association in pregnant women with depression, but the observational study cannot show that amitriptyline caused it. A 2026 UK, Norway, and Sweden cohort reported higher preterm delivery odds with antidepressants as a group, but its published abstract does not give an amitriptyline-specific estimate and notes likely residual confounding. The DailyMed label's boxed warning states: “Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents and young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders.” It also says: “Patients of all ages who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or unusual changes in behavior.” Ask your provider about your situation. 3rd Trimester: MotherToBaby reports that some tricyclic antidepressants can cause short-term newborn symptoms, including colic, low oxygen, breathing problems, or irritability, and describes one amitriptyline case; it says not all exposed babies have symptoms. The NHS says babies may be monitored after delivery for temporary sleeping or feeding problems when amitriptyline is used around birth. The 2026 Wales cohort reported an amitriptyline-only group in a study of later special educational needs, but its subgroup estimates were uncertain and do not establish that medication caused a difference. The DailyMed label's boxed warning states: “Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents and young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders.” It also says: “Patients of all ages who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or unusual changes in behavior.” Ask your provider about your situation.

Question 2

What do medical sources say about Amitriptyline (Elavil, Vanatrip) while breastfeeding?

Accepted Answer

LactMed reports low milk levels and no immediate side effects in its limited follow-up, but rare sedation has been reported in a newborn. NHS SPS says amitriptyline can be used with caution and prefers imipramine or nortriptyline; Uguz et al. (2017) reported severe sedation and poor feeding in a breastfed infant when the mother took 10 mg per day. The label warns of potential serious infant reactions and says the decision whether to discontinue nursing or the drug should take into account the importance of the drug to the mother. The DailyMed label's boxed warning states: “Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents and young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders.” It also says: “Patients of all ages who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or unusual changes in behavior.” Ask your provider about your situation.

Question 3

Where do sources disagree on Amitriptyline (Elavil, Vanatrip) in pregnancy or breastfeeding?

Accepted Answer

Breastfeeding: product-label caution and clinical guidance DailyMed's label warns about potential serious adverse reactions in nursing infants and says a decision whether to discontinue nursing or the drug should account for the importance of the drug to the mother. LactMed says adverse effects would usually not be expected, especially when the infant is older than 2 months; NHS SPS says amitriptyline can be used with caution while preferring imipramine or nortriptyline. The label uses a conservative product-information warning. LactMed and NHS SPS summarize small milk-transfer studies and infant reports and discuss use with monitoring; they do not rule out uncommon effects. The product label is more cautious than LactMed and NHS SPS. Those clinical sources describe monitored use in selected infants, but a report includes severe sedation and poor feeding in a newborn after maternal use of 10 mg per day. The evidence is too small to estimate how often this occurs.

Amitriptyline

Amitriptyline — Breastfeeding

What the research shows

What's in it / what was tested

Sources disagree

Options sources describe

Beyond pregnancy

All sources

Similar medications