Valerian root

Why people use it

Valerian root is a European herb with a long tradition as a bedtime and nervous-tension remedy. Human trials suggest a modest, subjective improvement in sleep quality with specific extracts, but results are inconsistent and the evidence does not support it as a treatment for chronic insomnia.

• ✓Traditional aid to sleep and mild nervous tension
• ✓Evening tea and tincture rituals in European herbalism
• ✓Standardized-extract sleep-quality research
• ✓Bath additive and aromatic household use

What the evidence says

Meta-analyses of placebo-controlled trials find a modest, subjective improvement in sleep quality but no reliable effect on objective measures such as time to fall asleep, with wide variation in preparation, dose and study quality. The American Academy of Sleep Medicine suggests clinicians not use valerian for chronic insomnia, and the NIH Office of Dietary Supplements calls the evidence inconclusive. Evidence for anxiety rests on a single small trial.

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Common forms

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Tea, tincture, powdered root and standardized ethanolic extract are different exposures. The trial evidence belongs mainly to specific extracts, and valerian–hops products are a separate lane.

Traditional and practitioner context

Valerian is traditionally used in European herbal practice for mild nervous tension and to aid sleep, prepared as a root tea, tincture, expressed juice, extract or bath additive; the European Medicines Agency recognizes this use in its herbal monograph. Ancient Greek and Roman physicians, including Hippocrates and Galen, described valerian for sleeplessness. The characteristic “old sock” odor develops in the dried root and is not a field-identification trait of the fresh plant.

Foraging index

Introduced garden escape in North America

Valeriana officinalis is native to Europe and western Asia and is an introduced, sometimes naturalized garden escape in the United States and Canada. Cultivated or traceable pharmacopoeial root is preferred. Do not confuse it with red valerian (Centranthus ruber), an ornamental with a single flower spur and undivided leaves, or with native North American Valeriana species, which have separate safety records.

Status: introduced; cultivation preferred. Broad occurrence never confirms identity, safe use, legal access or permission to harvest.