Swanson Spirulina Blue-Green Algae, Standardized, 90 Veggie Capsules supplement bottle
Swanson

Spirulina Blue-Green Algae, Standardized, 90 Veggie Capsules

What We Researched
5 active ingredients analyzed · 5 inactive ingredients decoded · 6 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
72
Product Score Fair
90
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as beta-carotene) (from Spirulina)† 375 mcg RAE 42%
Vitamin K (from Spirulina)† 4 mcg 3%
Spirulina (Arthrospira plantensis) (microalgae) 500 mg *
Total Phycocyanin 50 mg *
Zeaxanthin 475 mcg *
Bioavailability Excellent

Absorption Rating

  • Vitamin A (as beta-carotene) (from Spirulina)† Fair
  • Vitamin K (from Spirulina)† Good
  • Spirulina (Arthrospira plantensis) (microalgae) Good
  • Total Phycocyanin Good
  • Zeaxanthin Good
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Vegetarian Capsule)
  • Rice Flour
  • Microcrystalline Cellulose (Plant Fiber)
  • Magnesium Stearate
  • Silica
Efficacy Very Poor

Dosage Analysis

  • Vitamin A (as beta-carotene) (from Spirulina)† 375 mcg RAE Under-dosed
  • Vitamin K (from Spirulina)† 4 mcg Under-dosed
  • Spirulina (Arthrospira plantensis) (microalgae) 500 mg Under-dosed
  • Total Phycocyanin 50 mg Under-dosed
  • Zeaxanthin 475 mcg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (as beta-carotene) (from Spirulina)† 375 mcg RAE 42%
Vitamin K (from Spirulina)† 4 mcg 3%
Spirulina (Arthrospira plantensis) (microalgae) 500 mg *
Total Phycocyanin 50 mg *
Zeaxanthin 475 mcg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Vegetarian Capsule) Safe

It is used as a material for making vegetarian capsules.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Microcrystalline Cellulose (Plant Fiber) Safe

It is used as a filler, binder, and disintegrant.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$10$9$8$7$6 Mar 12 $8.00
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
Swanson

Founded 1969 · Fargo, North Dakota, United States · 994 products · swansonvitamins.com

Certifications

6 certifications
Consumerlab Verified
Nsf Gmp Verified Source
Fda Gmp Inspections Verified Source
Npa Gmp Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
In House Testing — Verified Source

Violation History

6 incidents
Recall Vitamin B12 Methylcobalamin High Absorption2022-03-04Source
Lawsuit Website not accessible to blind individuals, violating the Americans with Disabilities Act (ADA).2019Source
Prop 65 Lead2015-11-03Source
Recall Swanson Premium Brand Full Spectrum Cilantro (Coriander)2014-04-04Source
Recall Swanson Organic Celery Seed (Whole)2011-12-16Source
Fda Warning Products contained an unauthorized drug (lovastatin) and were marketed with claims to treat high cholesterol, rendering them unapproved new drugs.2007-08-08Source
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Frequently Asked Questions
Is Swanson Spirulina Blue-Green Algae, Standardized a good supplement?

Swanson Spirulina Blue-Green Algae, Standardized, 90 Veggie Capsules received a product quality score of 72/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 5 active ingredients All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Swanson, holds a brand trust score of 90/100 with 6 verified certifications including Consumerlab, Nsf Gmp, Fda Gmp Inspections, Npa Gmp.

What are the ingredients in Swanson Spirulina Blue-Green Algae, Standardized?

Swanson Spirulina Blue-Green Algae, Standardized contains 5 active ingredients: Vitamin A (as beta-carotene) (from Spirulina)† (375 mcg RAE), Vitamin K (from Spirulina)† (4 mcg), Spirulina (Arthrospira plantensis) (microalgae) (500 mg), Total Phycocyanin (50 mg), Zeaxanthin (475 mcg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Swanson Spirulina Blue-Green Algae, Standardized safe to take?

Swanson Spirulina Blue-Green Algae, Standardized, 90 Veggie Capsules has been analyzed for ingredient safety across all its components. All 5 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Swanson a trustworthy supplement brand?

Swanson receives a brand trust score of 90/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1969 and headquartered in Fargo, North Dakota, United States, the company offers 994 products in their lineup. They hold 6 verified certifications including Consumerlab, Nsf Gmp, Fda Gmp Inspections, Npa Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Swanson 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.