Also known as: meso-zeaxanthin, RR-zeaxanthin
Strongest in Sample size (95). Held back by Recency (13).
Solid mix of RCTs with some methodological gaps.
Confirmed across many independent studies with significant findings.
Tens of thousands of participants pooled across studies.
Studies agree on direction of effect.
Mostly pre-2020 research; updates may be needed.
Effect-size tagged on 378 of 380 claims for this supplement. Our research updates daily; remaining claims are pending re-processing.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Recommended: 2-4mg daily
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