Valerian root is not recommended while breastfeeding. No studies have tested whether valerian’s active compounds pass into breast milk or how they might affect a nursing infant. Both the U.S. National Institutes of Health lactation database (LactMed) and the European Medicines Agency advise against using valerian during lactation without medical guidance, specifically because this safety data doesn’t exist.
Why the Safety Data Is Missing
Valerian root is one of the most popular herbal sleep aids worldwide, yet researchers have never measured its components in human breast milk. LactMed, the primary U.S. database that tracks how drugs and supplements behave during breastfeeding, lists no published information on effects in breastfed infants. That’s not a soft “probably fine.” It’s a complete absence of evidence, which is different from evidence of safety.
This gap exists partly because herbal supplements aren’t regulated the same way as prescription drugs. Pharmaceutical companies run lactation studies as part of the approval process. Supplement manufacturers have no such requirement, so the research simply never gets done. Valerian contains dozens of biologically active compounds that work together to produce sedation, and without targeted studies, there’s no way to predict which of those compounds might reach an infant through milk or what they’d do once there.
What Experts Recommend
The European Medicines Agency’s formal assessment of valerian root states plainly that preparations “should not be taken during pregnancy and lactation” and “should not be used without medical advice.” LactMed echoes this by noting the complete lack of safety and efficacy data for nursing mothers or their infants. No major medical body has issued a statement saying valerian is safe during breastfeeding.
The concern isn’t that valerian has been proven harmful. It’s that its sedative properties raise a reasonable worry about infant drowsiness, feeding difficulties, or other effects that simply haven’t been studied. Newborns and young infants process substances through their liver and kidneys much more slowly than adults, so even small amounts of a sedating compound could have outsized effects.
Teas, Tinctures, and Capsules
You might wonder whether a mild valerian tea carries less risk than a concentrated capsule or alcohol-based tincture. This is a reasonable assumption, since tea generally delivers a lower dose of active compounds. But without any data on how valerian behaves in breast milk at any dose, there’s no established safe threshold for any form. A tincture adds the additional concern of alcohol content, which does pass into breast milk. The bottom line is that no preparation of valerian has been cleared for use during breastfeeding.
Are Other Sleep Aids Safer?
The frustrating reality is that most popular natural sleep aids share the same evidence gap. Melatonin, for example, also lacks formal safety data during breastfeeding. LactMed notes that short-term use of typical evening doses is “unlikely” to harm a breastfed infant, but it stops short of a full endorsement. One case report documented an 18-month-old with abnormal bleeding episodes that resolved after the breastfeeding mother stopped taking up to 10 mg of melatonin daily. That’s a single case, not proof of widespread risk, but it illustrates that even “natural” supplements can have unexpected effects through breast milk.
Non-supplement approaches to sleep tend to be the most reliably safe options during breastfeeding. Sleep hygiene strategies like keeping your room cool and dark, limiting screen time before bed, and napping when the baby naps won’t introduce any compounds into your milk. Cognitive behavioral therapy for insomnia (often called CBT-I) is effective and available through apps and online programs. If your sleep problems are severe, a healthcare provider can discuss options that have actually been studied in breastfeeding populations, since some prescription sleep medications do have lactation data available.
What to Watch For if You’ve Already Taken It
If you took valerian root before learning about the lack of safety data, a single dose or a few doses is unlikely to cause a dramatic problem. Watch your baby for unusual sleepiness, difficulty waking for feeds, poor feeding, or any change in behavior. These would be the most logical signs if sedating compounds were reaching your infant through milk. If your baby is feeding normally, gaining weight, and behaving as expected, that’s reassuring. Going forward, stopping valerian and switching to non-supplement sleep strategies is the most cautious path until research catches up.