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

L-Serine Unflavored Review

What We Researched
1 active ingredient analyzed · 1 brand certification checked · Page generated: Sep 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 Supporting evidence unavailable

Transparency

6 claims
Third Party Testing Claim — Verified Evidence available Evidence
Coa Availability — Verified Evidence available Evidence
Testing Lab Disclosure — Claimed Brand claim; evidence unavailable
In House Testing — Verified Evidence available Evidence
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

6 incidents
Recall California Gold Nutrition Daily Prenatal Multi, Ultamins Women's Multivitamin, and Ultamins Women's 50+ Multivitamin2025-06-26 Source available Primary source
Fda Warning Public health warning against the purchase and consumption of unregistered food supplement: CALIFORNIA GOLD NUTRITION Baby Liquid Vitamin D3.2025-01-10 Source available Primary source
Fda Warning Public health warning against the purchase and consumption of unregistered food product: CALIFORNIA GOLD NUTRITION Stabilized R-Lipolic Acid.2024-04-12 Source available Primary source
Fda Warning Public health warning against the purchase and consumption of unregistered food product: CALIFORNIA GOLD NUTRITION Silymarin Complex.2024-04-12 Source available Primary source
Fda Warning Public health warning against the purchase and consumption of unregistered food supplement: CALIFORNIA GOLD NUTRITION PQQ 20mg.2024-02-01 Source available Primary source
Fda Warning Public health warning against the purchase and consumption of unregistered food supplement: CALIFORNIA GOLD NUTRITION DAIRY ENZYMES.2019-09-26 Source available Primary source
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Frequently Asked Questions
Is California Gold Nutrition L-Serine Unflavored a good supplement?

California Gold Nutrition L-Serine 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 100 servings per container. The manufacturer, California Gold Nutrition, holds a brand trust score of 79/100.

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

California Gold Nutrition L-Serine 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 Unflavored safe to take?

GoodSupp reviewed the inactive-ingredient data available for California Gold Nutrition L-Serine Unflavored. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. 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. 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 — 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.