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SCORE
Spirulina
Antioxidant · Lipids
Tier 3 — Trending
What it is
A nutrient-dense blue-green algae with modest reductions in bad cholesterol, triglycerides, and inflammation markers in small trials. NCCIH warns that spirulina can be contaminated with liver toxins (microcystins) and heavy metals if harvested from uncontrolled water sources. Only buy from brands with NSF or third-party purity certification. Rich in protein and B vitamins.
Efficacy
2/5
Safety
3/5
Research
2/5
Onset
3/5
Cost
3/5
Drug-int.
4/5
Dose
2–4 g/day; only third-party tested products — contamination with liver toxins is a real risk
Time of day & tips
Only use NSF or third-party certified products — contamination risk is real. Take with water at any time of day. Can be added to smoothies. Avoid if taking blood thinners.
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