Focus / nootropic evidence brief
Phosphatidylserine is a phospholipid found in cell membranes and sold for cognition, stress, and cortisol-related claims. Sport claims usually center on mental performance and recovery stress.
May affect stress, fatigue, or cognitive outcomes, but evidence is small and inconsistent.
Small stress and task-performance trials suggest possible cognitive or mood effects; practical benefit remains uncertain.
Trials use different soy-derived doses and durations; multi-ingredient caffeine formulas make attribution difficult.
Cortisol or golf-accuracy findings do not establish broad stress, focus, or recovery benefits.
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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