Home Ingredients Valerian Root
Sleep HealthStress & Anxiety

Valerian Root

Valeriana officinalis
Evidence Level
Moderate
2 Clinical Trials
4 Documented Benefits
3/5 Evidence Score

Valerian root is one of the most widely used herbal sleep aids in Western medicine, with a history of use dating back to ancient Greece and Rome. Its active compounds — valerenic acid and isovaleric acid — interact with GABA receptors to promote sedation, reduce sleep latency, and improve sleep quality.

Studied Dose 300–600 mg extract 30–60 minutes before bedtime
Active Compound Valerenic acid and isovaleric acid — standardized extract (0.3–0.8% valerenic acid)

Benefits

Sleep onset improvement

Multiple RCTs show valerian reduces time to fall asleep (sleep latency) by an average of 15–20 minutes and improves subjective sleep quality without the dependency or grogginess associated with pharmaceutical sedatives.

Supported by Trial 1

Anxiety reduction

Valerenic acid produces anxiolytic effects comparable to low-dose benzodiazepines in clinical studies, reducing anxiety symptoms without significant sedation at daytime doses.

Supported by Trial 1, Trial 2

Stress relief

Valerian reduces physiological stress responses including heart rate variability changes and cortisol levels during acute stressors, supporting use as a daytime adaptogen at lower doses.

Supported by Trial 1, Trial 2

Menopausal symptom support

RCTs in postmenopausal women show valerian reduces hot flash frequency and severity, and improves sleep quality disrupted by hormonal changes.

Supported by Trial 2, Trial 1

Mechanism of action

1

GABA-A receptor modulation

Valerenic acid binds GABA-A receptor beta subunits as a positive allosteric modulator — similar mechanism to benzodiazepines but with lower affinity and without dependency risk.

2

GABA transaminase inhibition

Valerian extract inhibits GABA-T, the enzyme responsible for breaking down GABA in the synaptic cleft, increasing GABA availability and duration of action in the CNS.

3

Adenosine receptor interaction

Some valerian constituents (hesperidin, linarin) act on adenosine A1 receptors, which mediate sleep pressure and sedation as part of the natural sleep-wake regulatory system.

Clinical trials

1
Valerian for Sleep Quality — Meta-Analysis
PubMed

Meta-analysis of 16 RCTs examining valerian root extract for subjective sleep quality improvement.

1,093 patients across 16 RCTs.

Valerian significantly improved subjective sleep quality without producing side effects. Subjects were twice as likely to report good sleep with valerian vs. placebo.

2
Valerian and Hot Flashes in Postmenopausal Women
PubMed

RCT of valerian 255 mg three times daily vs. placebo in 68 postmenopausal women for 8 weeks.

68 postmenopausal women with hot flashes. 8-week intervention.

Significant reduction in hot flash frequency (50% vs. 5% placebo) and severity. Improved sleep quality scores. No serious adverse effects.

Side effects and drug interactions

Common Potential side effects

Morning grogginess with high doses (>600 mg)
Vivid dreams reported by some users
Paradoxical stimulant effect in a small minority of users

Important Drug interactions

CNS depressants (benzodiazepines, alcohol, opioids) — additive sedative effects; use with caution
Anesthesia — discontinue 2 weeks before surgery due to CNS depressant effects
CYP3A4 substrates — valerian may weakly inhibit CYP3A4; caution with cyclosporine

More Sleep Health Ingredients

Sleep Health
Melatonin
Melatonin is a hormone produced by the pineal gland that regulates circadian rhythm and si…
Muscle & Recovery
Magnesium
Magnesium is the fourth most abundant mineral in the body and a cofactor for over 300 enzy…
Cognitive
Ashwagandha
Ashwagandha is an adaptogenic herb that may reduce stress, enhance mood, and support overa…
Cognitive
KSM-66®
KSM-66 Ashwagandha, a standardized root extract, promotes stress relief and cognitive clar…

Explore Other Ingredients

Athletic Performance
L-Carnitine (Carnipure®)
L-Carnitine is a naturally occurring amino acid derivative essential for transporting long…
Cardiovascular
Omega-3 Fatty Acids
Omega-3 fatty acids, primarily eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), an…
Cognitive
Rhodiola Rosea
Rhodiola rosea is an adaptogenic herb from arctic and mountainous regions of Europe and As…

Frequently asked questions about Valerian Root

What is the recommended dosage of Valerian Root?

The clinically studied dose for Valerian Root is 300–600 mg extract 30–60 minutes before bedtime. Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is Valerian Root used for?

Valerian Root is studied for sleep onset improvement, anxiety reduction, stress relief. Multiple RCTs show valerian reduces time to fall asleep (sleep latency) by an average of 15–20 minutes and improves subjective sleep quality without the dependency or grogginess associated with pharmaceutical sedatives.

Are there side effects from taking Valerian Root?

Reported potential side effects may include: Morning grogginess with high doses (>600 mg) Vivid dreams reported by some users Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Does Valerian Root interact with medications?

Known drug interactions may include: CNS depressants (benzodiazepines, alcohol, opioids) — additive sedative effects; use with caution Anesthesia — discontinue 2 weeks before surgery due to CNS depressant effects Consult a pharmacist or healthcare provider if you take prescription medications.

Is Valerian Root good for sleep health?

Yes, Valerian Root is researched for Sleep Health support. Multiple RCTs show valerian reduces time to fall asleep (sleep latency) by an average of 15–20 minutes and improves subjective sleep quality without the dependency or grogginess associated with pharmaceutical sedatives.