Valerian root has been used in several pediatric studies without serious adverse effects, but its safety depends on the child’s age. Children under 3 should not take valerian because the potential risks for that age group have never been evaluated. For older children, a small but growing body of research suggests valerian is generally well tolerated in the short term, though the evidence is still limited compared to what exists for adults.
The Age Cutoff That Matters
The NIH Office of Dietary Supplements draws a clear line: children younger than 3 years old should not take valerian. The reasoning is simple. No studies have looked at how valerian affects toddlers or infants, so the risks are completely unknown. A developing nervous system in those early years processes compounds differently than an older child’s, and there’s no data to confirm safety.
For children roughly ages 3 and up, the picture is more nuanced. Several clinical studies have included children, and a systematic review published in the Journal of Evidence-based Integrative Medicine concluded that valerian’s safety “has been proven in a wide range from childhood to old age.” That said, most of these studies were small, short in duration, or used valerian in combination with other herbs, which makes it hard to draw firm conclusions about valerian alone.
What the Pediatric Studies Actually Show
The strongest standalone evidence comes from a small randomized, double-blind, placebo-controlled trial that gave valerian root to five children with intellectual disabilities and chronic sleep problems. At a dose of 20 mg per kilogram of body weight taken one hour before bedtime for two weeks, the children fell asleep faster, spent less time awake during the night, slept longer overall, and had better sleep quality compared to both baseline and placebo. The researchers noted the treatment appeared most effective in children whose difficulties involved hyperactivity.
Larger studies have tested valerian as part of herbal blends. In one observational study, 169 primary school children with hyperactivity and concentration difficulties (who did not meet the threshold for an ADHD diagnosis) took a daily combination of 640 mg valerian root extract and 320 mg lemon balm extract for seven weeks. Their symptoms improved over that period as rated by both pediatricians and parents. Another study of 918 children averaging 8.3 years old used a similar valerian-lemon balm combination for about four weeks to address restlessness and sleep disturbance. A third included 115 children ages 6 to 12 with nervous agitation, using a three-herb blend containing valerian, St. John’s wort, and passionflower for two to four weeks.
None of these studies reported serious adverse effects. But it’s worth noting that most were observational rather than rigorously controlled, and the combination formulas make it impossible to attribute all the benefits (or confirm all the safety) to valerian alone.
Potential Side Effects
In adults, valerian’s most commonly reported side effects are mild: headache, digestive upset, and occasional grogginess the next morning. Pediatric studies haven’t flagged additional or unique side effects in children, but the research pool is small enough that rare reactions could easily be missed.
The more serious concern involves the liver. Memorial Sloan Kettering Cancer Center notes case reports of liver damage associated with valerian use and advises anyone with liver, pancreatic, or gallbladder disease to avoid it entirely. While these cases are rare, children with any underlying liver condition should steer clear. There’s also a possible link between certain compounds in valerian (called iridoids) and an increased risk of acute pancreatitis, though this too is based on isolated reports rather than widespread findings.
Interactions With Other Medications
Valerian promotes relaxation by influencing the same calming brain pathways that many sedating medications target. If your child takes any medication that causes drowsiness, including antihistamines like diphenhydramine, prescription sleep aids, or anti-anxiety medications, combining them with valerian could amplify the sedating effect. The same caution applies to any supplements with calming properties, such as melatonin or magnesium.
Because valerian is a dietary supplement, not a regulated drug, it isn’t held to the same manufacturing standards as prescription medications. Potency can vary between brands, and some products may contain additional herbs or fillers not prominently listed. If you’re considering valerian for a child who takes any regular medication, checking with their pediatrician first helps avoid unexpected interactions.
Dosing in Children
There is no universally agreed-upon pediatric dose for valerian root. The clinical studies that exist used widely varying amounts depending on the form of valerian and the child’s condition. The sleep trial for children with intellectual disabilities used 20 mg per kilogram of body weight of dried whole root, meaning a 30-kg (66-pound) child would have taken about 600 mg. The large observational studies used standardized extracts at fixed doses, typically ranging from roughly 160 mg to 640 mg of valerian extract per day.
Extracts and dried root are not interchangeable. Extracts concentrate the active compounds, so a 160 mg extract tablet is not the same as 160 mg of dried root. If you’re comparing products, pay attention to whether the label lists a raw root equivalent or an extract amount. Most commercially available children’s formulas, where they exist, use lower doses than what was tested in clinical settings, but without standardized guidelines it’s difficult to know what’s optimal.
What Parents Should Weigh
Valerian root appears to be reasonably safe for children over 3 in the short term, based on the limited research available. Most studies lasted two to seven weeks, so there’s very little data on what happens with months of continuous use. If you’re thinking about valerian for a child’s sleep issues or restlessness, a few practical points are worth considering.
First, the quality of evidence is modest. The studies are small or observational, and many used valerian alongside other herbs. No large, well-controlled trial has established valerian as a proven pediatric treatment. Second, sleep difficulties in children often have identifiable causes, including inconsistent bedtime routines, screen exposure, anxiety, or underlying sleep disorders, that respond well to behavioral changes. Addressing those factors first may eliminate the need for any supplement. Third, because supplements aren’t regulated the way medications are, choosing a product from a manufacturer that uses third-party testing helps ensure you’re getting what the label says without contaminants.