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Spirulina / chlorella
Full ranking Dose tool Products (613)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)— Authoritative daily maximum: 8,000 mg
Median（Per day）500 mgP5 20 – P95 3,000
Products613
Sources: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=spirulin2&lang=eng · Health Canada NNHPD monograph: adults max 8 g spirulina/day
Daily dose across products（mg/day）
Authoritative daily maximum 8,000
8.3 mglog scale · n=6139,000 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | Nature's Sunshine | Spirulina | 2,400 mg | 90.0 |
| 1 | Spring Valley | Spirulina | 400 mg | 90.0 |
| 1 | Solaray | Spirulina 410 mg | 1,230 mg | 90.0 |
| 1 | Swanson | Spirulina 500 mg | 1,000 mg | 90.0 |
| 1 | Vitamin World | Spirulina 500 mg | 4,500 mg | 90.0 |
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.