Home / Ingredient Directory / Phosphatidylserine
Yannis Lopez
Reviewed by Yannis Lopez · Nutrition Industry Veteran
Last updated: July 6, 2026
Brain & Memory Phospholipid

Phosphatidylserine

Memory & stress support

Concentrated in the brain
Supports healthy cortisol

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before starting any supplement.

Overview

Phosphatidylserine (PS) is a phospholipid that is a key component of cell membranes, particularly concentrated in the brain. It plays an important role in cell signaling, neurotransmitter release, and maintaining healthy brain function.

PS levels naturally decline with age, and supplementation has been studied for its potential to support memory, cognitive function, and healthy stress response (including cortisol regulation).

Potential Benefits

Memory & Cognition

May support memory, especially in older adults. Some studies show benefits for cognitive function and mental clarity.

Stress & Cortisol

Research suggests phosphatidylserine may help support a healthy cortisol response during periods of stress.

Exercise Recovery

Some studies show benefits for reducing exercise-induced stress and supporting recovery in athletes.

Generally Well Tolerated

Phosphatidylserine is very safe with an excellent safety profile. Most people tolerate it well.

Typical Dosage
Daily Dose
100–300mg
Often taken in divided doses
Best Taken
With or without food
Can be taken in the morning or evening depending on goals
Pro Tips
  • Look for soy-free or sunflower-derived PS
  • Can be stacked with Bacopa or Lion's Mane
  • 300mg daily is common for stress support
  • Effects on memory may take 4–6 weeks
Research Snapshot

Multiple studies support phosphatidylserine's benefits for memory in older adults and for reducing exercise-induced cortisol. A 2010 randomized controlled trial found that soybean-derived phosphatidylserine significantly improved delayed verbal recall in elderly adults with memory complaints, particularly those with lower baseline scores. It is one of the most researched phospholipids for brain health.

Source: Kato-Kataoka et al., J Clin Biochem Nutr (2010)

How Phosphatidylserine Compares

Ingredient Best For Key Difference
Phosphatidylserine Memory, Stress, Cortisol Phospholipid; supports cell membranes
Bacopa Monnieri Memory, Learning Herb; effects build over 4–6 weeks
Lion's Mane Cognitive function, NGF Mushroom; supports nerve growth

Phosphatidylserine pairs very well with Bacopa and Omega-3 for comprehensive brain support.

Popular Stacks with Phosphatidylserine
Memory & Focus Stack
Phosphatidylserine + Bacopa + Omega-3
Excellent for cognitive performance
Stress Resilience Stack
Phosphatidylserine + Ashwagandha + Magnesium
Popular for high-stress periods
Brain Health Stack
Phosphatidylserine + Lion's Mane + Omega-3
Great for long-term cognitive support

Full stack recommendations coming soon in our Stacks section.

Frequently Asked Questions
How long until I feel benefits?
Memory benefits typically appear after 4–6 weeks of consistent use. Stress and cortisol benefits may be noticed sooner (within 2–4 weeks).
Is phosphatidylserine the same as lecithin?
No. Lecithin contains phosphatidylserine but in much smaller amounts. Phosphatidylserine supplements are concentrated and standardized for higher potency.
Can I take it with other nootropics?
Yes. Phosphatidylserine stacks very well with Bacopa, Lion's Mane, and Omega-3. It is often used in comprehensive brain health formulas.
Sources & References
  1. Kato-Kataoka A, et al. (2010). RCT: soybean-derived PS significantly improved delayed verbal recall in older adults with memory complaints. J Clin Biochem Nutr.
  2. Monteleone P, et al. (1990). PS supplementation blunted exercise-induced cortisol and ACTH increases in healthy men. Neuroendocrinology.
  3. Cenacchi T, et al. (1993). Double-blind RCT in 494 older adults: PS improved memory and cognitive function versus placebo over 6 months. Aging.
Related Ingredients
Bacopa Monnieri Lion's Mane Omega-3 Ashwagandha
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