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Valerian Root

herbs

Valerian root is a herbal supplement derived from the Valeriana officinalis plant, traditionally used to promote relaxation and sleep quality. It contains compounds including valerenic acid and volatile oils that may interact with GABA receptors in the brain.

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Benefits

Sleep quality improvement
Relaxation and anxiety reduction
Restlessness management
Stress relief
Sleep latency reduction

Dosage

Typical Dose

400-900 mg

Upper Limit

1500 mg daily

Timing

30-120 minutes before bedtime

Forms & Bioavailability

Dried root powder

Moderate; variable due to inconsistent active compound levels

Standardised extract

Higher; typically standardised to 0.8% valerenic acid

Capsules

Moderate to high depending on standardisation

Tea infusion

Lower; less concentrated extraction method

Side Effects

Drowsiness and grogginess upon waking
Headaches
Stomach upset
Vivid dreams or nightmares
Dizziness
Nervousness or restlessness in some individuals

Interactions

CNS depressants (alcohol, benzodiazepines, barbiturates)
Sedative medications
CYP3A4 substrates
Hepatotoxic compounds

Research Summary

Research on valerian root shows modest evidence for sleep improvement, with mixed results across studies. Most clinical trials demonstrate modest benefits over placebo for sleep latency and quality, though effect sizes are generally small to moderate. Long-term safety and efficacy data remain limited, and standardisation challenges between products complicate direct comparisons.

The Bottom Line on Valerian Root

Valerian Root is moderately researched with promising but sometimes mixed evidence.It is most commonly used for sleep quality improvement and relaxation and anxiety reduction. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.

About Our Research

This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.

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Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement, especially if you have existing health conditions or take medication.

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