🟡 60/100

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  • Kava Extract, Powder: 350mg is 1.4× the Tolerable Upper Intake Level (250mg)
  • 100% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Kava Extract, Powder: 350mg is 1.4× the Tolerable Upper Intake Level (250mg)

This product received a low score because the amount of Kava Extract in a serving exceeds the recommended maximum daily intake level.

Label Data

350 mg Serving Size
285 Servings
Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

⚠️ Exceeds Tolerable Upper Intake Level by 1.4× (UL: 250 mg) 📚 12 studies (Tier A: 0, B: 5)
This product: 350mg UL 250mg

Label Claims — Verification

All Other
All Other (99% of products) Structure/Function (74% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Kosher Organic Dairy Free

Product Information

📋 Directions for Use

Directions: Mix 350 mg (about 1/8 teaspoon) into water, milk, tea, or a smoothie.

⚠️ Warnings & Precautions

Warning: Kava use can have side effects, including dizziness, drowsiness, and headache. It is not recommended to take Kava continuously without breaks. Long-term use of kava may cause liver damage. It is very important to prepare kava correctly to avoid liver damage. Individuals with liver problems should avoid using kava.

Kava may interact with medications, such as antidepressants, anti-anxiety medications, and sedatives.

Keep out of reach of children.

🧪 Formulation Notes

Star-K (Kosher)

Kosher Star-K Kosher

This Kava Extract Powder is water-soluble, rendering it much more bioavailable than ordinary powders or even extract powders. 100% Kava

Water-soluble CO2 extracted (no petroleum solvents used) Vacuum dried to retain micronutrients (not spray dried) Better bioavailability and potency

No additives, fillers, or other ingredients Non-GMO, vegetarian/vegan, non-irradiated

Certified Organic by CCOF

Product of India Tested in independent 3rd-party US labs.

Additional Information

Star-K (Kosher)

Materia Organica primarily sells bulk ingredients to manufacturers and brand owners.

Store in sealed container in a dry, cool area.

Product Details

DSLD Entry Date 2025-07-24
Product Type Botanical
Form Powder
DSLD ID 332152
Data Updated 2026-04-11

Research Evidence

19 Research Sources
48 Avg Quality Score
8 Rct
5 Systematic Review
4 Meta Analysis
2 Clinical Trial
B Kava extract for treating anxiety
Meta Analysis The Cochrane database of systematic reviews 2003
B Kava for Generalized Anxiety Disorder: A Review of Current Evidence
Meta Analysis Journal of alternative and complementary medicine (New York, N.Y.) 2018
B Kava extract for treating anxiety
Systematic Review The Cochrane database of systematic reviews 2001
B Kava extract for treating anxiety
Systematic Review The Cochrane database of systematic reviews 2002
B The effectiveness and safety of Kava Kava for treating anxiety symptoms: A systematic review and analysis of randomized clinical trials
Systematic Review Complementary therapies in clinical practice 2018
C Kava for generalised anxiety disorder: A 16-week double-blind, randomised, placebo-controlled study
Rct The Australian and New Zealand journal of psychiatry 2020
C Kava and St. John's Wort: current evidence for use in mood and anxiety disorders
Systematic Review Journal of alternative and complementary medicine (New York, N.Y.) 2009
C Neuroimaging Insights: Kava's (Piper methysticum) Effect on Dorsal Anterior Cingulate Cortex GABA in Generalized Anxiety Disorder.
Rct Nutrients
C The risk-benefit profile of commonly used herbal therapies: Ginkgo, St. John's Wort, Ginseng, Echinacea, Saw Palmetto, and Kava
Meta Analysis Annals of internal medicine 2002
C Efficacy of kava extract for treating anxiety: systematic review and meta-analysis
Meta Analysis Journal of clinical psychopharmacology 2000
View all evidence for Kava →

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