Health support evidence brief
Spirulina is a blue-green algae powder or tablet sold for nutrients, antioxidants, lipids, glucose, and endurance-adjacent health claims.
Some metabolic-health and body-composition signals exist, but practical performance claims remain too limited for recommendation.
Meta-analyses support some metabolic/body-composition signals; practical performance evidence remains limited.
Trials vary by dose, population, exercise pairing, and product quality.
Contamination testing is essential for algae products. Avoid treating it as a replacement for protein, micronutrients, or endurance fuel.
Source Drawer
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
Send the disputed claim, source link, and why it changes the practical verdict. Corrections that materially affect the claim, dose, caveat, or rating are prioritized.
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