Spirulina Powder
Cultivated Arthrospira spirulina is generally safe and FDA-approved as a color additive (21 CFR 73.530). Wild-harvested or contaminated supplies can contain microcystins (hepatotoxins) – consumer reports stress purchasing tested, contaminant-free product.
What it is
Dried biomass of cyanobacteria Arthrospira platensis / Arthrospira maxima.
Natural blue-green color (E ingredient via spirulina extract is approved natural color); protein/nutrient ingredient in supplements.
Why it's flagged
- risk of microcystin contamination if not from controlled cultivation
- high iodine in some preparations
What regulators actually say
"The color additive spirulina extract may be safely used for coloring candy and chewing gum... The color additive is prepared by filtered water extraction of the dried biomass of Arthrospira platensis."
"FDA approved spirulina extract as a color additive in candy and chewing gum (2013) and expanded uses to additional foods (2014)."
Regulatory status
United States — FDA
Spirulina extract approved color additive at 21 CFR 73.530; whole spirulina powder GRAS as food.
European Union — EFSA
Authorized food/novel-food coloring; spirulina concentrate authorized colour.
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