Excreted in tiny amounts into breast milk. Serum levels of breastfed infants whose mothers are on Sertraline are usually undetectable or very low. No harm effect has been observed on health and short or long term development of infants. Transient troubles in the early neonatal period like drug withdrawal syndrome among newborn or premature infants with high serum levels as a result of treatment with Sertraline to the mother during pregnancy have been observed. Sertraline causes fewer problems related to galactorrhea than other antidepressant drugs. It is probably the safest antidepressant medication while breastfeeding. Mothers who are treated with antidepressant medicaction are in need of stronger support for a higher risk of early breastfeeding failure.