California Gold Nutrition L-Serine Powder Unflavored supplement bottle
California Gold Nutrition

L-Serine Powder Unflavored Review

What We Researched
1 active ingredient analyzed · 1 brand certification checked · Last updated: Aug 2026
93
Product Score Excellent
79
Brand Score Fair

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Serine 10 g †
Bioavailability Excellent

Absorption Rating

  • L-Serine Good
Other Ingredients Excellent

Fillers & Additives

No inactive ingredient data available.

Efficacy Very Good

Dosage Analysis

  • L-Serine 10 g High

Supplement Facts

Ingredient Amount % Daily Value
L-Serine 10 g †
Brand Trust Report
California Gold Nutrition

Founded 2013 · Irvine, California, United States · 492 products · californiagoldnutrition.com/

Certifications

1 certification
USDA Organic Verified

Transparency

6 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Verified Source
Contains Proprietary Blend — True

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
Related Supplements
Jamieson Extra Strength D3 2500 IU
Jamieson Extra Strength D3 2500 IU
Product 100 Brand 100
Gaia Herbs Hibiscus Flower Liquid Phyto-Caps
Gaia Herbs Hibiscus Flower Liquid Phyto-Caps
Product 100 Brand 100
Gaia Herbs Olive Leaf Liquid Phyto-Caps
Gaia Herbs Olive Leaf Liquid Phyto-Caps
Product 100 Brand 100
California Gold Nutrition Ubiquinol + PQQ
California Gold Nutrition Ubiquinol + PQQ
Product 100 Brand 79
California Gold Nutrition Ergothioneine 5 mg
California Gold Nutrition Ergothioneine 5 mg
Product 100 Brand 79
California Gold Nutrition Rhodiola Extract 500 mg
California Gold Nutrition Rhodiola Extract 500 mg
Product 100 Brand 79
Frequently Asked Questions
Is California Gold Nutrition L-Serine Powder Unflavored a good supplement?

California Gold Nutrition L-Serine Powder Unflavored received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 45 servings per container. The manufacturer, California Gold Nutrition, holds a brand trust score of 79/100 with 1 verified certifications including USDA Organic.

What are the ingredients in California Gold Nutrition L-Serine Powder Unflavored?

California Gold Nutrition L-Serine Powder Unflavored contains 1 active ingredients: L-Serine (10 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is California Gold Nutrition L-Serine Powder Unflavored safe to take?

California Gold Nutrition L-Serine Powder Unflavored 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 492 products in their lineup. They hold 1 verified certifications including USDA Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: California Gold Nutrition has 6 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

Download on App Store Browse All Supplements
Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. 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.