Valerian Root

Also known as: Valeriana officinalis, all-heal, garden valerian

Grade B — Moderate Evidenceherbsleep

Recommended Dosage

300600 mg extract

30-60 min before bed. Full effects may require 2-4 weeks of consistent use.

Traditional sleep herb with moderate RCT support. Comparable to low-dose benzodiazepines. Not acutely sedating — builds over weeks.

Last reviewed: 2026-03-09

Evidence Rating: Grade B — Moderate Evidence

Some RCTs with positive results, or strong observational evidence. More research may refine our understanding.

Interaction Warnings

CNS depressants (sedatives, benzodiazepines, alcohol)Moderate

Additive sedation

CYP3A4 substratesLow

Valerian may inhibit CYP3A4; potential drug interactions

StatinsLow

Possible increased statin levels via CYP3A4

⚠️ Important Notes

  • Full effects require 2-4 weeks
  • Standardize to 0.8% valerenic acid
  • Discontinue 2 weeks before surgery

Clinical Evidence (3 studies)

Valerian for sleep: meta-analysis

Bent S et al. (2006) — Am J Med

Meta-analysis of 16 RCTs: may improve sleep quality without side effects

View on PubMed

Valerian 600mg comparable to oxazepam

Ziegler G et al. (2002) — Eur J Med Res

Sleep benefit comparable to oxazepam in RCT

View on PubMed

Valerian improved sleep structure

Donath F et al. (2000) — Pharmacol Biochem Behav

Improved sleep structure (polysomnography) after repeated dosing

View on PubMed

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