NOW Certified Organic Spirulina 500 mg supplement bottle

NOW

Certified Organic Spirulina 500 mg Review

Q: What are the ingredients in NOW Certified Organic Spirulina 500 mg?

NOW Certified Organic Spirulina 500 mg contains 4 active ingredients: Calories (10 kcal), Total Carbohydrates (1 g), Protein (2 g), organic Spirulina (3 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Q: Is NOW a trustworthy supplement brand?

NOW receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 1759 products in their lineup. Note: NOW has 8 historical regulatory incidents on record, which are factored into the trust score.

What We Researched

4 active ingredients analyzed · 9 brand certifications checked · Page generated: Sep 2026

Product Score Excellent

100

Brand Score Excellent

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

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% DV
Total Carbohydrates	1 g	1%
organic Spirulina	3 g	†

Bioavailability Very Good

Absorption Rating

Total Carbohydrates Fair
organic Spirulina Good

Other Ingredients Excellent

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

organic Spirulina 3 g Effective

Supplement Facts

Ingredient	Amount	% Daily Value
Calories	10 kcal
Total Carbohydrates	1 g	1%
Protein	2 g	4%
organic Spirulina	3 g	†

Brand Trust Report

Certifications

9 certifications

Informed Sport Source available Primary evidence

Npa Gmp Source available Primary evidence

Consumerlab Source available Primary evidence

Labdoor Source available Primary evidence

Fda Gmp Inspections Source available Primary evidence

Non Gmo Project Source available Primary evidence

Usda Organic Source available Primary evidence

Vegan Certified Source available Primary evidence

Informed Choice Supporting evidence unavailable checked 2026-05-05

Transparency

5 claims

Coa Availability — Verified Evidence available Evidence

Third Party Testing Claim — Verified Evidence available Evidence

Testing Lab Disclosure — Claimed Brand claim; evidence unavailable

In House Testing — Verified Evidence available Evidence

Violation History

8 incidents

Lawsuit Mislabeled St. John's Wort supplement, containing significantly less of the active ingredient than advertised.None Source available Primary source

Lawsuit A data breach that compromised personal and health information of employees and dependents.2023 Source available Primary source

Prop 65 Lead2021-11-30 Source available Primary source

Recall NOW Real Food® Raw Macadamia Nuts2020-06-12 Source available Primary source

Recall NOW Real Food® Zesty Sprouting Mix2018-06-21 Source available Primary source

Lawsuit Misleadingly using slack-fill packaging for their Vitamin C supplements.2015 Source available Primary source

Fda Warning Adulterated Dietary Supplement due to pesticide (quintozene) contamination in American Ginseng.2007-10-12 Source available Primary source

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Frequently Asked Questions

Is NOW Certified Organic Spirulina 500 mg a good supplement?

NOW Certified Organic Spirulina 500 mg 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 4 active ingredients with 30 servings per container. The manufacturer, NOW, holds a brand trust score of 100/100.

What are the ingredients in NOW Certified Organic Spirulina 500 mg?

NOW Certified Organic Spirulina 500 mg contains 4 active ingredients: Calories (10 kcal), Total Carbohydrates (1 g), Protein (2 g), organic Spirulina (3 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NOW Certified Organic Spirulina 500 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for NOW Certified Organic Spirulina 500 mg. 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 NOW a trustworthy supplement brand?

NOW receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 1759 products in their lineup. Note: NOW has 8 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.