California Gold Nutrition Fungiology®, Certified Organic Maitake Powder, 4.2 oz (120 g) supplement bottle
California Gold Nutrition

Fungiology®, Certified Organic Maitake Powder, 4.2 oz (120 g)

What We Researched
3 active ingredients analyzed · 1 retailer compared · Last updated: Mar 2026
100
Product Score Excellent
79
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Organic Maitake (Grifola frondosa)(Mycelial biomass cultured on organic whole oats [Avena sativa]) 2 g †
Bioavailability Excellent

Absorption Rating

  • Organic Maitake (Grifola frondosa)(Mycelial biomass cultured on organic whole oats [Avena sativa]) Good
Other Ingredients Excellent

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

  • Organic Maitake (Grifola frondosa)(Mycelial biomass cultured on organic whole oats [Avena sativa]) 2 g Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 5
Total Carbohydrate 2 g <1%*
Organic Maitake (Grifola frondosa)(Mycelial biomass cultured on organic whole oats [Avena sativa]) 2 g †

Price Comparison

iHerb $10.47 $0.17 / serving
Best Price

Price History

Tracked across major retailers. Updated periodically.

$12$11$10$9$8 Mar 12 $10.47
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
California Gold Nutrition

Founded 2013 · Irvine, California, United States · 406 products · californiagoldnutrition.com/

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 Fungiology®, Certified Organic Maitake Powder a good supplement?

California Gold Nutrition Fungiology®, Certified Organic Maitake Powder, 4.2 oz (120 g) 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 3 active ingredients with 60 servings per container. The manufacturer, California Gold Nutrition, holds a brand trust score of 79/100.

What are the ingredients in California Gold Nutrition Fungiology®, Certified Organic Maitake Powder?

California Gold Nutrition Fungiology®, Certified Organic Maitake Powder contains 3 active ingredients: Calories (5), Total Carbohydrate (2 g), Organic Maitake (Grifola frondosa)(Mycelial biomass cultured on organic whole oats [Avena sativa]) (2 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is California Gold Nutrition Fungiology®, Certified Organic Maitake Powder safe to take?

California Gold Nutrition Fungiology®, Certified Organic Maitake Powder, 4.2 oz (120 g) 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.