Earthrise California Spirulina 500 mg Tablets Review
#2 of 8 · Best Premium✓ Label verified · Supplement Facts read Sep 20, 2026Real retailer photo, cut out. Label unedited.
Buy it. The premium pick for people who want to know the phycocyanin number. Every spirulina brand talks about phycocyanin, the blue pigment behind most of the antioxidant and anti-inflammatory research.
$19-20~$0.64 per 6-tablet (3 g) serving
Why It Scores 8.6 — And The Label Line Behind Each Number
Dose vs Clinical Range
25% of scoreServing Size 6 Tablets (3 g) matches the studied daily amount in one serving.
- Disclosed per serving
- 165 mg c-phycocyanin, 2 g protein, 1.5 mg iron, 20 mg sodium
Purity & Contaminant Control
25% of scoreSingle California farm with controlled ponds; the panel is clean of Prop 65 warnings, though no third-party testing claim is printed on the pack.
- Seals
- Non-GMO, kosher (KSA), California Grown
Label Transparency
20% of scoreThe only panel here that declares c-phycocyanin (165 mg) alongside 1.5 mg iron, 2 g protein and 20 mg sodium per serving.
Certifications & Sourcing
15% of scoreNon-GMO and KSA kosher seals plus 'California Grown' on the label; no USDA Organic mark.
- Form
- Tablet, 500 mg each
- Other ingredients
- Vegetable stearate, silica
Value
15% of scoreRoughly $0.64 per 3 g serving because the 180-tablet bottle holds only 30 servings; the most expensive dose in the group.
- Serving
- 6 tablets (3 g)
- Count
- 180 tablets (30 servings)
- Cost per dose
- ~$0.64 per 3 g serving
Label verified. Every figure read from the Supplement Facts photo, Sep 20, 2026.
Marketing Claims Vs. Reality
100% California grown spirulina.
The front panel states '100% California Grown Spirulina' and Earthrise operates its own farm in the Imperial Valley.
Rich in phycocyanin.
Unlike every competitor here the panel quantifies it: 165 mg c-phycocyanin per 3 g serving.
One month supply.
180 tablets at the printed 6-tablet serving is 30 servings, exactly one month at one serving a day.
What Our Test Actually Found
It is the only label that quantifies the active pigment
Phycocyanin is the compound most of the spirulina antioxidant literature revolves around, and Earthrise prints 165 mg per serving. Every other product on this list leaves you to assume.
The bottle, not the algae, is the weak point
At 30 servings per bottle you re-order monthly and pay the highest per-dose price here. Earthrise also sells a larger bottle, which is the better buy if you stay with the brand.
Full analysis: all pros & cons (7), buy if / skip if
- Only product declaring c-phycocyanin content
- Full 3 g serving from a single California farm
- Iron, protein and sodium disclosed
- Non-GMO and kosher seals on the panel
- Highest cost per dose on the list
- Not organic certified
- No third-party testing statement printed on the pack
- You want the phycocyanin content declared, not implied
- You want a US-grown, single-farm spirulina
- You prefer a 3 g tablet serving over powder
- You are cost-sensitive; this is the most expensive dose on the list
- You want organic certification
- You want a bottle that lasts more than a month
Every spirulina brand talks about phycocyanin, the blue pigment behind most of the antioxidant and anti-inflammatory research. Earthrise is the one that prints it. Combine that with a single California pond and a full 3 g serving and you get the best-documented tablet on the market. The 180-count bottle lasts only a month, which is why it costs more per dose than anything else here.
Earthrise farms spirulina in the California desert and is the only brand on this list willing to print the number that matters most for the antioxidant claims: 165 mg of c-phycocyanin per six-tablet, 3 g serving. The panel also declares 1.5 mg iron, 2 g protein and 20 mg sodium, with Non-GMO and kosher seals. The catch is the bottle size: the 180-tablet listing is 30 servings, so the per-dose cost is the highest here.
Buy it for the number nobody else prints
If you take spirulina for its phycocyanin, Earthrise is the only brand that tells you how much you are getting. It matches Nutrex on dose and origin quality and beats it on disclosure; it loses on price and on the absence of a printed testing claim. A premium, honest tablet.
If This Doesn’t Fit — Try These
01Nutrex Hawaiian Spirulina
It costs more than a bag of powder and it is not organic, but everything the science asks for is on the panel: 3 g per serving, a named controlled pond, third-party testing and disclosed iron and protein.
03Anthony's California Spirulina
If you want to know where your algae grew and do not need an organic seal, this is the cheapest way to a disclosed, 3 g, US-grown dose.
04NOW Organic Spirulina 1,000 mg
If you want organic certification in a tablet, NOW is the pick: no binders, real seals, a testing-lab manufacturer and a low price.
Quick Answers
Why does the panel photo show 60 servings when the bottle says 180 tablets?
The gallery panel is from the 360-tablet bottle. The 180-tablet listing is 30 servings at the same 6-tablet, 3 g serving; the per-serving numbers do not change.
What is c-phycocyanin?
The blue protein pigment that gives spirulina its colour and is the compound most of the antioxidant and anti-inflammatory research is built around. Earthrise declares 165 mg per 3 g serving.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Karkos PD, et al. Evid Based Complement Alternat Med. 2011;2011:531053. PMID 18955364 — Spirulina in clinical practice: evidence-based human applications. A review of human studies concluded spirulina has the most consistent evidence for lipid-lowering and allergic-rhinitis symptom relief, with immune-marker effects that are promising but drawn from small trials.
- [2] Kalafati M, et al. Med Sci Sports Exerc. 2010;42(1):142-51. PMID 20010119 — Ergogenic and antioxidant effects of spirulina supplementation in humans. Four weeks of 6 g spirulina a day in trained men increased time to fatigue and fat oxidation during a two-hour run and raised blood glutathione, in a crossover placebo-controlled design.
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