Spirulina (Arthrospira platensis)
Of 1,837 on-market spirulina (arthrospira platensis) products in the January 2026 DSLD dump, the median declared dose is 500 mg, and 99.1% list unspecified/undisclosed form as the primary form.
Form share
Of 1,833 products with an identifiable primary form, here is the share held by each form of Spirulina (Arthrospira platensis) on the market today.
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| Form | Quality tier | n | Share |
|---|---|---|---|
| unspecified/undisclosed form | Unrated | 1,817 | 99.1% |
| Spirulina extract (e.g. phycocyanin-enriched or aqueous extract) | Unrated | 16 | 0.9% |
Form share over time
Entry-year breakdown of the top forms, 2012–2025.
Dose distribution
Deciles of declared dose per serving (mg), among 764 products with a disclosed amount.
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- 44.1% of products fall below the fairy-dust threshold (400 mg, 20% of the studied low dose).
- 56.4% of products don't disclose an amount because Spirulina (Arthrospira platensis) is declared inside a proprietary blend.
Where does your dose rank?
Enter a per-serving dose (mg) to see exactly how it compares to the 764 on-market spirulina (arthrospira platensis) products with a disclosed amount. The chart above groups doses into deciles; this looks up the exact percentile for one number.
By dosage form
By target group
Top brands
Search interest over time
How often people search for spirulina (arthrospira platensis) on Google, US only, the last 5 years. This is public interest, not DSLD label data — a spike here doesn't necessarily line up with anything on this page, and Google's own index (100 = that term's peak popularity in the chosen window) is relative, not an absolute search-volume count.
Or see this search directly on trends.google.com.
Forms explained
Label discloses only "Spirulina" (typically whole-organism powder or tablets), with no extract specified.
An extract's declared mass is not comparable with whole-powder mass (the cited trial doses are whole spirulina, 2-8 g/day); recorded without a dose. No verified comparison against powder.
Reference values
- RDA (adult): not established — Cyanobacterium used as a food/supplement; not an essential nutrient, no RDA/AI exists.
- Tolerable Upper Intake Level (adult): not established — Not established. No safety source was fetched for this entry, so no tolerability statement is made here.
- Studied clinical dose range: 2000–8000 mg
- Low end: Karizi SR et al. 2023, Phytother Res 37(4):1435-1448, PMID 36598187 -- double- blind RCT (n=60) adding Spirulina platensis 2 g/day to metformin for 3 months in inadequately controlled type 2 diabetes; HbA1c fell by 1.43 and fasting glucose by 24.94 mg/dL (both P<0.001 as reported). High end: Park HJ et al. 2008, Ann Nutr Metab 52(4):322-328, PMID 18714150 -- double-blind placebo-controlled RCT (n=78, age 60-87), 8 g/day for 16 weeks; significant cholesterol lowering in men and changes in IL-2/IL-6 and total antioxidant status reported.
- Note: Unit basis: mg of spirulina powder/tablets as declared; many rows declare grams (normalized to mg by the pipeline). Most on-market rows are nested blend members with no amount. Spirulina also appears in other-ingredients lists (reference/excipient_aliases.csv), which are matched separately and do not collide. "Blue-green algae" is deliberately NOT an alias: it also covers Aphanizomenon (AFA) products, a different organism.