LactMed and the Other Free Lactation References: What Each One Covers

LactMed — formally the Drugs and Lactation Database — is a substance-by-substance reference hosted on the NIH's NCBI Bookshelf, organized as individual records on medications and other substances in relation to breastfeeding (LactMed). The other widely used free references are built for different questions entirely: federal parent-facing guidance explains how breastfeeding works and what support exists, international recommendations state duration standards, and specialty clinical protocols address lactation management for practitioners. Knowing which kind of document one is holding prevents a good deal of confusion.

This page describes what each reference is for. It is not a guide to deciding anything about a medication or a feeding plan; those are questions for a clinician or pharmacist who knows the individual case.

A record-per-substance database

LactMed's structure is its defining feature. Rather than chapters on topics, it presents records keyed to a named substance, and the reference itself is peer-reviewed and maintained on the NIH Bookshelf (LactMed). That organization makes it the natural reference when the question begins with the name of a drug, and a poor one when the question begins with a situation. The companion pages on this site cover what LactMed is, how to read a LactMed record, and where it is hosted and how to reach it for free.

One small practical note on finding it: the name is rendered inconsistently in casual use — as two words, with letters transposed, or shortened — and the formal title is the Drugs and Lactation Database, with LactMed as the short name. Searching the formal title alongside "NIH" or "Bookshelf" is usually the quickest route to the authentic version rather than a copy of its text on some other site.

Federal parent-facing guidance

The U.S. Department of Health and Human Services' Office on Women's Health maintains plain-language guidance on learning to breastfeed, common challenges, pumping, and breastfeeding after returning to work (womenshealth.gov). The register is explanatory and practical rather than entry-by-entry, and the scope is the experience of feeding rather than the pharmacology of any particular substance. For a reader whose question is "how does this work and who can help me," this is the appropriate starting point and LactMed is not.

International recommendations

The World Health Organization publishes its global recommendations on infant feeding, including exclusive breastfeeding duration, as a health topic (WHO — Breastfeeding). Documents of this kind are useful precisely because they are standards: they state what is recommended at a population level, with the authority of an international body, and they are the right citation when a training curriculum or a policy document needs one. They do not attempt to address individual substances or individual cases.

Clinical protocols for practitioners

The Academy of Breastfeeding Medicine publishes evidence-based clinical protocols on lactation management (ABM protocols). These are written for clinicians, assume clinical vocabulary, and address management questions in a structured way. For anyone studying the maternal-infant side of caregiver education, they are valuable chiefly as a window into how lactation topics are organized professionally — not as material an unlicensed caregiver would act on independently.

Choosing by the shape of the question

A question that starts with a substance name points to LactMed. A question about how feeding works, or what support and accommodations exist, points to the Office on Women's Health material. A question about what is recommended, as a standard, points to WHO. A question about clinical management, asked by or of a clinician, points to the ABM protocols. Most of the frustration people report with lactation references comes from asking one of these documents to answer a question another was written for.

For how this material fits into training rather than practice, see where breastfeeding education fits in caregiver training.