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SupplementScience

Spirulina Dosage Guide

Reviewed by·PharmD, BCPS

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

General Dosage

1-3g daily, taken with or without food

Maximum dose: 8g/day (doses up to 19g/day have been used in short-term studies without serious adverse effects)

Dosage Recommendations

General recommendation: 1-3g daily, taken with or without food

Timing: Can be taken any time of day; splitting doses across meals may improve tolerability at higher doses

Dosage by Condition

General health / antioxidant support
1-3g dailyModerate
Cholesterol reduction
2-8g dailyModerate
Allergic rhinitis
2g dailyModerate
Immune support
2-5g dailyEmerging
Blood sugar management
2-4g dailyEmerging

Upper limit: 8g/day (doses up to 19g/day have been used in short-term studies without serious adverse effects)

Timing & Absorption

Can be taken any time of day; splitting doses across meals may improve tolerability at higher doses

Can be taken with or without food.

Full Spirulina Guide

References

  1. Huang H, Liao D, Pu R, Cui Y (2018). Quantifying the effects of spirulina supplementation on plasma lipid and glucose concentrations, body weight, and blood pressure. Diabetes, Metabolic Syndrome and Obesity. DOI PubMed
  2. Romay Ch, González R, Ledón N, Remirez D, Rimbau V (2003). C-phycocyanin: a biliprotein with antioxidative, anti-inflammatory and neuroprotective effects. Current Protein & Peptide Science. DOI PubMed
  3. Selmi C, Leung PS, Fischer L, German B, Yang CY, Kenny TP, Cysewski GR, Gershwin ME (2011). The effects of Spirulina on anemia and immune function in senior citizens. Cellular & Molecular Immunology. DOI PubMed
  4. Cingi C, Conk-Dalay M, Cakli H, Bal C (2008). The effects of spirulina on allergic rhinitis. European Archives of Oto-Rhino-Laryngology. DOI PubMed
  5. Ou Y, Lin L, Yang X, Pan Q, Cheng X (2013). Antidiabetic potential of phycocyanin: effects on KKAy mice. Pharmaceutical Biology. DOI PubMed
  6. Finamore A, Palmery M, Bensehaila S, Peluso I (2017). Antioxidant, immunomodulating, and microbial-modulating activities of the sustainable and ecofriendly spirulina. Oxidative Medicine and Cellular Longevity. DOI PubMed
  7. Mazokopakis EE, Papadomanolaki MG, Fousteris AA, Kotsiris DA, Lampadakis IM, Ganotakis ES (2014). The hepatoprotective and hypolipidemic effects of Spirulina (Arthrospira platensis) supplementation in a Cretan population with non-alcoholic fatty liver disease. Turkish Journal of Gastroenterology. PubMed