Mood/Sleep

Kava

Pacific herbal extract that reduces anxiety and may improve sleep in adults with stress-related insomnia.

Kava

Pacific herbal extract that reduces anxiety and may improve sleep in adults with stress-related insomnia.

score

evidence

Caution

risk

Proven Benefits

01Reduces generalized anxiety

02May improve sleep quality

03May reduce depressive symptoms

Chemical Forms

Recommended

WS1490 extract (pharmaceutical-grade, standardized)
Noble kava root extract (water-extracted, standardized to kavalactones)
Traditional aqueous root extract

Avoid

Tudei kava (higher adverse-effect risk, including liver injury)
Extracts from leaves or stems (nontraditional, higher hepatotoxicity risk)
Non-aqueous solvent extracts without chemotype verification (e.g., acetone/ethanol)

Expert Note

Water-extracted noble root products and WS1490 have the best human data for anxiety with a more favorable safety profile. Tudei chemotypes and non-root material have a less favorable adverse-effect profile, and non-aqueous solvent extracts are less aligned with the traditional safety literature. Standardizing to total kavalactones improves dose consistency.

Protocol

Amount

120-300 mg kavalactones

Frequency

Divided into 2-3 doses daily, or once in the evening for sleep

When

With food; for sleep, take 1-2 hours before bed.

Condition-Based Dosing

Generalized anxiety disorder (GAD)

120-240 mg kavalactones daily, divided into 2-3 doses for 4-8 weeks— Use only with clinician oversight because of liver risk; reassess if no benefit after 8 weeks.

Stress-related insomnia

150-200 mg kavalactones 1-2 hours before bedtime— Start lower to check for morning grogginess.

First-time users or sensitive individuals

50-100 mg kavalactones daily for 3-5 days, then titrate up— Monitor for GI upset or skin changes.

Safety & Limits

Upper Safe Limit

300 mg kavalactones/day (highest dose evaluated in major RCTs; no official UL established)

Cycling

4 weeks on, 1-2 weeks off; or use intermittently rather than daily for more than 8 consecutive weeks.

Contraindications

Liver disease or elevated liver enzymes — hepatotoxicity risk

Pregnancy or breastfeeding — insufficient safety data

Heavy alcohol use or alcohol use disorder — additive liver injury and sedation risk

Concurrent sedatives (benzodiazepines, opioids, barbiturates) — additive CNS depression

Concurrent hepatotoxic medications — increased liver injury risk

Synergies

Magnesium glycinate

Magnesium is a cofactor for calming neurotransmission and may complement kava's muscle-relaxing effect.

L-theanine

Promotes relaxation and alpha-wave activity, which may stack with kava's calming effect without adding much stimulation.

Avoid Combining With

✕Alcohol (additive hepatotoxicity and sedation — avoid completely)
✕Benzodiazepines, opioids, barbiturates, and sleep meds (additive CNS depression — medical supervision required)
✕Acetaminophen/paracetamol and other hepatotoxic drugs (increase liver strain — avoid or use only with clinician guidance)
✕Caffeine near dosing (can blunt calming effects)

Updated Invalid Date