Phosphatidylserine is a phospholipid naturally found in high concentrations in brain cell membranes, where it plays a key role in cell signaling, neurotransmitter release, and synaptic function. Research suggests that supplemental phosphatidylserine may support cognitive performance, particularly in areas of memory, attention, and mental processing speed, with some studies exploring its potential benefits for age-related cognitive decline and stress management by helping to moderate cortisol responses. Studies have also investigated its role in supporting focus and attention in younger populations, including children with attention-related challenges. Originally derived from bovine brain tissue, modern supplements typically use soy-derived or sunflower-derived phosphatidylserine, which offer a plant-based alternative with a similar phospholipid profile and a well-regarded safety record in clinical research.
Compare this supplementResearch suggests that phosphatidylserine (PS) may support memory and broader cognitive function, particularly in old...
View studies →Research suggests that phosphatidylserine (PS) may support several aspects of cognitive function, including memory, a...
View studies →The two studies linked here do not investigate phosphatidylserine or stress relief in humans. One examines a gene the...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 200–400 mg | Daily | ADHD support in children and adolescents | Based on RCTs examining attention and behavior in ADHD populations |
| Capsule | 100 mg | Three times daily | Cognitive function and memory in older adults | Common in clinical trials studying age-related cognitive decline |
| Capsule | 300–800 mg | Daily | Stress relief and cortisol reduction | Based on RCTs measuring neuroendocrine stress response |
| Powder | 200–600 mg | Daily | Exercise-induced stress and cognitive performance in athletes | Common in clinical trials with physically active populations |