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Spirulina Weight Loss

The effectiveness of spirulina for weight loss, with a mean difference of -1.77 kg.

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Jan 12, 2026
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Which OTC supplement ingredients have randomized controlled trial data for modest weight loss, and what are their effect sizes?

Randomized controlled trials support modest average weight loss for a handful of over‑the‑counter (OTC) ingredients: notable meta-analytic estimates include spirulina (≈−1.77 kg), psyllium (≈−3.70 kg)...

Jan 10, 2026

Which weight‑loss supplements have the strongest long‑term randomized controlled trial evidence for sustained fat loss?

Randomized controlled trial evidence that any over‑the‑counter weight‑loss supplement produces meaningful, sustained fat loss is weak; the best signals come from spirulina (moderate weight reduction w...