Spirulina is an aquatic microalgae that can absorb heavy metals or toxins from its environment. Verify these third-party standards:
: Avoid products with a strong "fishy" or "urine-like" smell (which can indicate contamination or urea use) or those that appear brown/burnt. 3. Essential Certifications
The 3 best spirulinas, according to a pharmacist (2026) - Darwin Nutrition
