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Also known as PS, Soy phosphatidylserine
Phospholipid concentrated in neuronal cell membranes, now typically sourced from soy or sunflower lecithin; small trials suggest a reduced cortisol response to exercise stress and modest cognitive benefit in age-related decline.
We link to relevant studies and leave interpretation to you and your healthcare professional.
Where people report using it and what trials suggest
Common claims the trials do not support
Phospholipid with ageing-memory trials from the 1990s (often bovine-derived then) and weak modern replication.
Safety notes: Well tolerated; mild insomnia reported.
Evidence grades reflect study quality and consistency, not marketing claims.
Ordered by strength of evidence, then result direction.
01Effects of acute exercise on cognitive function: A meta-review of 30 systematic reviews with meta-analysesChang YK, et al. · Psychological bulletin · 2025PMID 39883421 ↗02Piriformis syndrome: a systematic review of case reportsMonteleone G, et al. · BMC surgery · 2025PMID 41068685 ↗03Recent advances and controversial issues in the optimal management of asymptomatic carotid stenosisAssociated conditions and community-reported outcomes, wrapped together on one page. Aggregates appear only once enough reports arrive.
How this compound is sold in the UK, and where our readers typically find it.
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