Swanson Spirulina, 500 mg, 180 Tablets supplement bottle
Swanson

Spirulina, 500 mg, 180 Tablets

What We Researched
1 active ingredient analyzed · 8 inactive ingredients decoded · 6 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
75
Product Score Fair
90
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Spirulina(Arthrospira platensis)(microalgae) 500 mg *
Bioavailability Excellent

Absorption Rating

  • Spirulina(Arthrospira platensis)(microalgae) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose (Plant Fiber)
  • Croscarmellose Sodium
  • Stearic Acid (Vegetable Source)
  • Magnesium Stearate
  • Calcium Carbonate
  • Silica
  • Hydroxypropyl Methylcellulose
  • Clear coating
Efficacy Very Poor

Dosage Analysis

  • Spirulina(Arthrospira platensis)(microalgae) 500 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Spirulina(Arthrospira platensis)(microalgae) 500 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose (Plant Fiber) Safe

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

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Stearic Acid (Vegetable Source) Generally_safe

It is used as a lubricant and release agent.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Clear coating Unknown

Price Comparison

iHerb $7.75
Best Price

Price History

Tracked across major retailers. Updated periodically.

$9$8$7$6$5 Mar 12 $7.00
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, 500 mg a good supplement?

Swanson Spirulina, 500 mg, 180 Tablets received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients Of the 8 inactive ingredients, 6 are rated safe and 0 are flagged for review. 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, 500 mg?

Swanson Spirulina, 500 mg contains 1 active ingredients: Spirulina(Arthrospira platensis)(microalgae) (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Swanson Spirulina, 500 mg safe to take?

Swanson Spirulina, 500 mg, 180 Tablets 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 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.