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Download over 1,200 records for substances to which breastfeeding mothers may be exposed.
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The LactMed database contains information on drugs and other chemicals to which breastfeeding mothers may be exposed. It includes information on the levels of such substances in breast milk and infant blood, and the possible adverse effects in the nursing infant. Suggested therapeutic alternatives to those drugs are provided, where appropriate. All data are derived from the scientific literature and fully referenced. A peer review panel reviews the data to assure scientific validity and currency.
This version of LactMed data is no longer updated. Current LactMed data is available on Bookshelf.
NLM Data News
For more information regarding the changes to LactMed content please see TOXNET Update: LactMed Moved to Bookshelf in the 2019 November-December Issue of the NLM Technical Bulletin.
The NLM Data License has been replaced by Terms and Conditions. No registration is required to access data available from NLM's FTP servers. Users will not be required to renew a license agreement at the end of the year.
Last Reviewed: October 19, 2022