Phosphatidylserine

Phosphatidylserine integrates into neuronal cell membranes where it serves multiple critical functions: it maintains membrane fluidity essential for proper receptor function, supports synaptic vesicle fusion during neurotransmitter release, and acts as a 'eat me' signal for cellular cleanup of damaged components. The age-related decline in neuronal PS contributes to reduced membrane fluidity, impaired synaptic transmission, and decreased neuroplasticity - which oral supplementation partially addresses by providing exogenous PS that crosses the blood-brain barrier and incorporates into neuronal membranes.,PS modulates the HPA axis (hypothalamic-pituitary-adrenal axis), specifically blunting cortisol response to acute stressors and high-intensity exercise. The mechanism involves PS interaction with the hypothalamus, where it normalizes ACTH (adrenocorticotropic hormone) release and downstream cortisol production. Multiple RCTs confirm 600-800mg/day PS reduces cortisol response to stress by 25-30% without blunting basal cortisol or interfering with normal HPA function.,Additional mechanisms include support of neurotransmitter synthesis (especially acetylcholine and dopamine in cortex and striatum), enhancement of nerve growth factor (NGF) signaling, anti-inflammatory effects in microglia, and stimulation of glucose metabolism in brain (neuronal energy support). PS also enhances activity of multiple membrane-bound enzymes including Na+/K+ ATPase (sodium-potassium pump essential for neuronal excitability) and protein kinase C (signal transduction kinase).

Phosphatidylserine integrates into neuronal cell membranes where it serves multiple critical functions: it maintains membrane fluidity essential for proper receptor function, supports synaptic vesicle fusion during neurotransmitter release, and acts as a 'eat me' signal for cellular cleanup of damaged components. The age-related decline in neuronal PS contributes to reduced membrane fluidity, impaired synaptic transmission, and decreased neuroplasticity - which oral supplementation partially addresses by providing exogenous PS that crosses the blood-brain barrier and incorporates into neuronal membranes.,PS modulates the HPA axis (hypothalamic-pituitary-adrenal axis), specifically blunting cortisol response to acute stressors and high-intensity exercise. The mechanism involves PS interaction with the hypothalamus, where it normalizes ACTH (adrenocorticotropic hormone) release and downstream cortisol production. Multiple RCTs confirm 600-800mg/day PS reduces cortisol response to stress by 25-30% without blunting basal cortisol or interfering with normal HPA function.,Additional mechanisms include support of neurotransmitter synthesis (especially acetylcholine and dopamine in cortex and striatum), enhancement of nerve growth factor (NGF) signaling, anti-inflammatory effects in microglia, and stimulation of glucose metabolism in brain (neuronal energy support). PS also enhances activity of multiple membrane-bound enzymes including Na+/K+ ATPase (sodium-potassium pump essential for neuronal excitability) and protein kinase C (signal transduction kinase).

What's safe to combine, and what belongs in a separate pin.

Storage. Store at room temperature (20-25C) in a cool, dry place. Soft gel capsules with PS in oil base shelf-stable for 18-24 months. Keep tightly sealed - PS oxidizes when exposed to air. Refrigeration extends shelf life.

Classified as a dietary supplement in the US. FDA issued qualified health claim in 2003 supporting use for cognitive dysfunction and dementia. Available widely over the counter. EU permits PS as a food supplement and novel food ingredient. Generally Recognized as Safe at typical supplement doses.