Phosphatidylserine for Health & Longevity - Quick Reference Sheet
evipedia.ai ← Back

Phosphatidylserine for Health & Longevity

Created on 07/08/2026 – Quick Reference based on Evidence Review created using AI4L / Opus 4.8 – Audit

A fatty building block of cell membranes, concentrated in the brain, taken mainly to support memory, attention, stress resilience, and exercise recovery in aging adults. The strongest results came from a discontinued animal-brain form; today's plant-based versions deliver smaller, less consistent effects. Very well tolerated, it remains low-risk with plausible but unproven promise. (Full Review)

Protocol

Cognitive Dose
300 mg/day
100 mg three times daily with meals; 100–300 mg/day maintenance range
Stress / Jet-Lag Dose
400–800 mg/day
Higher amounts to blunt cortisol; 400–600 mg taken before long flights
Exercise Dose
600–800 mg/day
For endurance and recovery, often one to two weeks around heavy training blocks
Time to effect
Memory & Cognition
6–12 weeks
Cognitive and memory benefits emerge gradually with daily use
Stress Response
Within hours
The stress-hormone-blunting effect is acute, appearing within hours of a dose

Benefits

Contraindications
  • Pregnancy or breastfeeding
  • Bleeding disorders or anticoagulants (without medical oversight)
  • Soy allergy (soy-derived forms)
  • Scheduled surgery (stop at least 2 weeks before)
    •
Key Interactions
  • Anticoagulants / antiplatelet drugs (warfarin, apixaban, aspirin, clopidogrel)
  • Cholinesterase inhibitors (donepezil, rivastigmine, galantamine)
  • Anticholinergic medications (oxybutynin, diphenhydramine)
  • Corticosteroids and other HPA-active drugs
  • NSAIDs (ibuprofen, naproxen)
  • Fish oil / high-dose omega-3
  • Ginkgo biloba
  • Cortisol-lowering adaptogens (ashwagandha, Rhodiola rosea)
    •

Risk & Side Effects

  • High:
  • Medium: Gastrointestinal upset
    •
  • Low: Insomnia and overstimulation with late dosing; increased bleeding tendency with blood thinners; source-related allergy
    •
  • Speculative: Unknown safety in pregnancy and lactation; theoretical concerns with chronic high-dose use
    •

Monitoring

Marker Target Why
Morning salivary cortisol (diurnal pattern) Robust wake peak that declines across the day Tracks the stress-hormone effect that phosphatidylserine targets
DHEA-S Mid-to-upper age-adjusted range Reflects adrenal balance and complements cortisol as a stress-axis marker
Omega-3 Index Greater than 8% Low omega-3 status predicts a weaker response and argues for a DHA-containing form
Homocysteine Below 9 µmol/L Elevated levels are linked to cognitive decline, giving context to a brain-health goal

Cadence: Reassess qualitative markers and cognitive goals at 8–12 weeks, then periodically; supporting labs at baseline and every 6–12 months

Qualitative Assessment

  • Memory and recall in everyday situations
  • Focus, mental clarity, and freedom from "brain fog"
  • Resilience to stress and speed of recovery from stressful events
  • Sleep quality and daytime energy
  • Mood and overall sense of well-being
  • Exercise recovery and perceived muscle soreness (for performance users)
Not medical advice. Educational distillation of a single evidence review. Confirm any decision with a qualified clinician, especially in the presence of prescription drugs or chronic conditions.