Does yarrow (Achillea millefolium) transmit through breast milk?

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Last updated: May 24, 2025View editorial policy

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From the Research

Yarrow herb can potentially transmit through breast milk, so nursing mothers should exercise caution when using it. Limited scientific research exists on yarrow's specific transfer into breast milk, but as with many herbs, its active compounds may pass to the infant during breastfeeding 1. If you're breastfeeding, it's generally recommended to avoid yarrow or use it only under professional guidance. The herb contains various compounds including volatile oils, flavonoids, and alkaloids that could potentially affect a nursing infant. Some herbalists suggest avoiding yarrow during breastfeeding due to its stimulating effects on the uterus and its potential to alter milk production.

Key considerations for breastfeeding mothers include:

  • The potential for yarrow's active compounds to pass to the infant during breastfeeding 2
  • The lack of rigorous scientific evidence on the safety of herbal supplements, including yarrow, during lactation 3
  • The importance of weighing potential benefits against risks when considering the use of yarrow for medicinal purposes while breastfeeding 4

If you're considering using yarrow for medicinal purposes while breastfeeding, consult with your healthcare provider first to weigh potential benefits against risks. Alternative herbs with better safety profiles during lactation might be more appropriate depending on your specific health needs. It's also essential to prioritize breastfeeding and human milk as the normative standards for infant feeding and nutrition, as recommended by the American Academy of Pediatrics 4 and supported by recent systematic reviews on the benefits of breastfeeding for infant and child health outcomes 5.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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