L-Theanine, Featuring AlphaWave®, 200 mg, 60 Veggie Capsules

Name: L-Theanine, Featuring AlphaWave®, 200 mg, 60 Veggie Capsules
Brand: California Gold Nutrition
Rating: 5.0 (1 reviews)

What We Researched

1 active ingredient analyzed · 4 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026

100

Product Score Excellent

Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
L-Theanine	200 mg	†

Bioavailability Excellent

Absorption Rating

L-Theanine Good

Other Ingredients Excellent

Fillers & Additives

Microcrystalline Cellulose
Modified Cellulose (Hypromellose Veggie Capsule)
Stearic Acid
Silicon Dioxide (Silica)

Efficacy Excellent

Dosage Analysis

L-Theanine 200 mg Effective

Supplement Facts

Ingredient	Amount	% Daily Value
L-Theanine	200 mg	†

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Modified Cellulose (Hypromellose Veggie Capsule) Safe

It is used as a vegetarian alternative to gelatin capsules.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Silicon Dioxide (Silica) Generally_safe

It is used as a flow agent to prevent clumping and improve powder flow.

Price Comparison

iHerb $10.06 $0.17 / serving

Best Price

Price History

Tracked across major retailers. Updated periodically.

iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report

Transparency

5 claims

Third Party Testing Claim — Verified Source

Coa Availability — Verified Source

Testing Lab Disclosure — Claimed

In House Testing — Verified Source

Violation History

6 incidents

Recall California Gold Nutrition Daily Prenatal Multi, Ultamins Women's Multivitamin, and Ultamins Women's 50+ Multivitamin2025-06-26Source

Fda Warning Public health warning against the purchase and consumption of unregistered food supplement: CALIFORNIA GOLD NUTRITION Baby Liquid Vitamin D3.2025-01-10Source

Fda Warning Public health warning against the purchase and consumption of unregistered food product: CALIFORNIA GOLD NUTRITION Stabilized R-Lipolic Acid.2024-04-12Source

Fda Warning Public health warning against the purchase and consumption of unregistered food product: CALIFORNIA GOLD NUTRITION Silymarin Complex.2024-04-12Source

Fda Warning Public health warning against the purchase and consumption of unregistered food supplement: CALIFORNIA GOLD NUTRITION PQQ 20mg.2024-02-01Source

Fda Warning Public health warning against the purchase and consumption of unregistered food supplement: CALIFORNIA GOLD NUTRITION DAIRY ENZYMES.2019-09-26Source

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Frequently Asked Questions

Is California Gold Nutrition L-Theanine, Featuring AlphaWave® a good supplement?

California Gold Nutrition L-Theanine, Featuring AlphaWave®, 200 mg, 60 Veggie Capsules received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 60 servings per container. Of the 4 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, California Gold Nutrition, holds a brand trust score of 79/100.

What are the ingredients in California Gold Nutrition L-Theanine, Featuring AlphaWave®?

California Gold Nutrition L-Theanine, Featuring AlphaWave® contains 1 active ingredients: L-Theanine (200 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is California Gold Nutrition L-Theanine, Featuring AlphaWave® safe to take?

California Gold Nutrition L-Theanine, Featuring AlphaWave®, 200 mg, 60 Veggie Capsules has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is California Gold Nutrition a trustworthy supplement brand?

California Gold Nutrition receives a brand trust score of 79/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2013 and headquartered in Irvine, California, United States, the company offers 406 products in their lineup. Note: California Gold Nutrition has 6 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.