Valerian Root
Valeriana officinalis
Traditional herbal remedy for sleep and anxiety, with moderate evidence for improving sleep quality.
Valerian root has been used for centuries to promote sleep and reduce anxiety. It contains compounds that interact with GABA receptors. Effects are typically subtle and may take 2-4 weeks of consistent use to become noticeable. Works best as part of a sleep routine rather than acute use.
Mechanisms of Action
GABA Modulation
Enhances GABA signaling for calming effects
Adenosine Effects
May promote sleepiness through adenosine
Recommended Dose
300-600mg extract
Optimal Timing
- 30-60 minutes before bed
Can be taken without food
Best Form
Standardized extract capsules
Alternatives: Tea, Tincture, Root powder
Extracts standardized to valerenic acid content are more reliable. Tea is traditional but less potent.
Duration
Minimum: 2 weeks
Optimal: 4 weeks
Cycling: Use for 4-6 weeks, then take a 1-week break. Long-term safety data is limited.
Note: Take consistently at the same time each night. May take 2-4 weeks to see full benefits. Can be taken with or without food.
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Improved Sleep Quality
Better subjective ratings of sleep
Mild Relaxation
Subtle calming effect before bed
Morning Grogginess
Some feel groggy the next morning
Strong Smell/Taste
Valerian has an unpleasant odor
Avoid due to insufficient safety data
Not recommended for children under 12
Who Should NOT Take This
- Liver disease (rare cases of liver toxicity reported)
- Before surgery (may interact with anesthesia)
Drug Interactions
Additive sedative effects
Increased sedation
Stop 2 weeks before surgery
Possible Side Effects
Tip: Take earlier or reduce dose
Tip: May resolve with continued use
Tip: Take with food
Warnings
- May cause withdrawal if stopped abruptly after long-term use
- Rare reports of liver toxicity — avoid with liver conditions
- Strong unpleasant odor is normal
Melatonin
complementaryDifferent mechanisms for sleep support
Melatonin for sleep timing, valerian for relaxation
Magnesium
complementaryBoth support relaxation and sleep
Enhanced calming effect before bed
Lemon Balm
enhancesTraditional combination for sleep
Enhanced sleep support
Passionflower
enhancesBoth enhance GABA activity
Stronger sleep and anxiety support
Top studies from 18+ peer-reviewed papers
Shinjyo N et al. • Journal of evidence-based integrative medicine (2020)
“However, due to the presence of multiple active constituents and relatively unstable nature of some of the active constituents, it may be necessary to revise the quality control processes, including standardization methods and shelf life.”
Key Findings:
- In addition, therapeutic benefits could be optimized when it was combined with appropriate herbal partners.
- There were no severe adverse events associated with valerian intake in subjects aged between 7 and 80 years.
- In conclusion, valerian could be a safe and effective herb to promote sleep and prevent associated disorders.
- However, due to the presence of multiple active constituents and relatively unstable nature of some of the active constituents, it may be necessary to revise the quality control processes, including standardization methods and shelf life.
Melzer J et al. • Phytotherapy research : PTR (2009)
“In total 9 non-serious adverse events were documented but the distribution did not differ significantly between the treatment groups.This herbal preparation (Ze185) showed to be an efficacious and safe short-term treatment in patients with somatoform disorders.”
Key Findings:
- Analysis of the ITT population confirmed these results.
- As to safety, no serious adverse events occurred.
- In total 9 non-serious adverse events were documented but the distribution did not differ significantly between the treatment groups.This herbal preparation (Ze185) showed to be an efficacious and safe short-term treatment in patients with somatoform disorders.
Aldekhail NM et al. • Alternative therapies in health and medicine (2025)
“Research must address herb-drug interactions, long-term effects, and biomarkers for personalized treatment. autism spectrum disorder, herbal medicines, narrative review, doses recommendation, therapeutic effects, side effects.”
Key Findings:
- Systematic review examining Valerian Root efficacy
- Published in Alternative therapies in health and medicine (2025)
- Further research warranted to confirm findings
Crawford C et al. • Journal of alternative and complementary medicine (New York, N.Y.) (2021)
“Potential solutions to address research gaps are offered, for future research next steps, which is needed to strengthen the evidence and inform decisions.”
Key Findings:
- Ingredients evaluated included Bacopa monnieri, choline, creatine, omega-3 fatty acids, Ginkgo biloba, ginseng, Rhodiola rosea, tyrosine, and valerian root, all in supplement form and compared with a placebo, at various serving sizes and durations of use.
- Whereas certain trends regarding promising serving sizes or duration for use, are pointed to in this synthesis, when combined, studies are inconsistent and imprecise, and many are methodologically flawed.
- Potential solutions to address research gaps are offered, for future research next steps, which is needed to strengthen the evidence and inform decisions.
Shinjyo N et al. • Sleep Medicine Reviews (2020)
“Valerian showed a statistically significant but clinically modest improvement in subjective sleep quality across pooled RCTs.”
Key Findings:
- Statistically significant improvement in subjective sleep quality (Pittsburgh Sleep Quality Index) vs placebo
- No significant improvement in objective sleep parameters (polysomnography) in available studies
- Excellent safety profile with no significant adverse effects at standard doses (300-600mg)
Study Type Distribution
Goals This Supplement Supports
Related Goals
This information is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before starting any supplement.