Zhou Nutrition Spirulina, Longevity Superfood, 6 oz (170 g) supplement bottle
Zhou Nutrition

Spirulina, Longevity Superfood, 6 oz (170 g)

What We Researched
10 active ingredients analyzed · 1 inactive ingredient decoded · 2 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
81
Product Score Good
71
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Protein♦ 2 mg 4%†
Vitamin K♦ 30 mcg 25%
Iron♦ 2 mg 11%
Potassium♦ 55 mg 1%
California Grown Spirulina 3.5 g **
Phycocyanin 350 mg **
GLA (Gamma Linolenic Acid) 46 mg **
Chlorophyll 31 mg **
Zeaxanthin 3 mg **
Bioavailability Very Good

Absorption Rating

  • Vitamin K♦ Good
  • Iron♦ Fair
  • Potassium♦ Good
  • California Grown Spirulina Good
  • Phycocyanin Good
  • GLA (Gamma Linolenic Acid) Good
  • Chlorophyll Fair
  • Zeaxanthin Good
Other Ingredients Excellent

Fillers & Additives

  • 100% Spirulina whole algae
Efficacy Poor

Dosage Analysis

  • Vitamin K♦ 30 mcg Under-dosed
  • Iron♦ 2 mg Under-dosed
  • Potassium♦ 55 mg Under-dosed
  • California Grown Spirulina 3.5 g Effective
  • Phycocyanin 350 mg Effective
  • GLA (Gamma Linolenic Acid) 46 mg Under-dosed
  • Chlorophyll 31 mg Under-dosed
  • Zeaxanthin 3 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 15
Protein♦ 2 mg 4%†
Vitamin K♦ 30 mcg 25%
Iron♦ 2 mg 11%
Potassium♦ 55 mg 1%
California Grown Spirulina 3.5 g **
Phycocyanin 350 mg **
GLA (Gamma Linolenic Acid) 46 mg **
Chlorophyll 31 mg **
Zeaxanthin 3 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$32$28$24$21$17 Mar 12 $28.99$20.00
iHerb
Vitacost

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

Brand Trust Report
Zhou Nutrition

Founded 2014 · Salt Lake City, UT, USA · 72 products · zhounutrition.com/

Certifications

2 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

1 incident
Lawsuit Misleading marketing practices regarding product safety and ingredient transparency, particularly concerning tree nut allergens.Recent (specific year not cited in source)Source
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Frequently Asked Questions
Is Zhou Nutrition Spirulina, Longevity Superfood a good supplement?

Zhou Nutrition Spirulina, Longevity Superfood, 6 oz (170 g) received a product quality score of 81/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 10 active ingredients Of the 1 inactive ingredients, 0 are rated safe and 0 are flagged for review. The manufacturer, Zhou Nutrition, holds a brand trust score of 71/100 with 2 verified certifications including Consumerlab, Fda Gmp Inspections.

What are the ingredients in Zhou Nutrition Spirulina, Longevity Superfood?

Zhou Nutrition Spirulina, Longevity Superfood contains 10 active ingredients: Calories (15), Protein♦ (2 mg), Vitamin K♦ (30 mcg), Iron♦ (2 mg), Potassium♦ (55 mg), California Grown Spirulina (3.5 g), and 4 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Zhou Nutrition Spirulina, Longevity Superfood safe to take?

Zhou Nutrition Spirulina, Longevity Superfood, 6 oz (170 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 Zhou Nutrition a trustworthy supplement brand?

Zhou Nutrition receives a brand trust score of 71/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2014 and headquartered in Salt Lake City, UT, USA, the company offers 72 products in their lineup. They hold 2 verified certifications including Consumerlab, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Zhou Nutrition has 1 historical regulatory incident 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.