Esomeprazole is the S-isomer of omeprazole, from which comes almost all of the available information. We recommend, therefore, see the information about this drug. At usual doses, esomeprazole reaches a low level in breast milk, by what it is not expected adverse effects being . It is estimated that the total quantity transferred to the baby does not exceed 1% of the administered to the mother, much lower than that used therapeutically in neonates.
Warning of the manufacturer:
Is not known whether esomeprazole is excreted in human milk. Have not been conducted studies in lactating women, and consequently should not be use this medication during breastfeeding.