What Is Phosphatidylserine and Why Is It So Important for the Brain?
Phosphatidylserine (PS) is a phospholipid — a fatty compound that makes up approximately 15% of all lipids in the brain's cell membranes. It is not simply a passive membrane component; PS plays an active role in neuronal signalling, neurotransmitter synthesis (acetylcholine, dopamine, noradrenaline), and memory mechanisms.
As we age, PS content in brain cells declines, which is linked to memory impairment and cognitive decline. Supplementing PS can help replenish these levels. Unlike many other nootropics, phosphatidylserine carries a FDA qualified health claim — the US Food and Drug Administration has acknowledged that PS may reduce the risk of cognitive dysfunction, though the evidence is not conclusive.
Scientific Evidence
Memory and cognitive function. A meta-analysis of 11 studies found that PS supplementation improved memory performance in both older and younger adults. Short-term memory improvement was particularly notable (Richter et al., 2013).
Cortisol reduction. A study showed that 800 mg of PS daily for 10 days reduced training-induced cortisol rise by 30% compared to placebo (Monteleone et al., 1990). This makes PS a popular supplement among athletes.
ADHD and attention. Some studies have found that PS supplementation improved attention and impulse control in children with ADHD, though the evidence requires further investigation (Hirayama et al., 2014).
PS Sources and Differences
| PS source | Advantages | Disadvantages |
|---|---|---|
| Soy lecithin | More affordable, vegan-friendly | Lower concentration |
| Sunflower lecithin | Allergen-free, non-GMO | Higher price |
| Bovine brain (historical) | High concentration | Food safety concerns (BSE) |
Modern supplements are based primarily on soy or sunflower sources.
Dosage and Use
The recommended dose is 100–400 mg per day, divided into 2–3 doses with food. PS is fat-soluble, so taking it with a fatty meal improves absorption.
For cognitive support, 100–200 mg per day is often sufficient. Athletes seeking cortisol control use 400–800 mg per day.
At maxfit.ee you will find OstroVit Braintus Thunder 90caps, which contains phosphatidylserine alongside other nootropic compounds. Explore brain supplements at /en/category/energia-ja-aju.
Who Benefits Most from Phosphatidylserine?
- Older adults who want to support memory and cognitive sharpness
- Athletes with intense training loads who want to control cortisol
- Students and knowledge workers who need better focus
- People experiencing brain fog and attention difficulties
Safety
Phosphatidylserine is well tolerated. Rare side effects at higher doses:
- Digestive upset
- Insomnia (if dosed late in the evening)
Key interactions:
- Anticoagulants: theoretical interaction with blood clotting — consult a doctor
- Cholinesterase inhibitors: may amplify acetylcholine synthesis effects
Conclusion
Phosphatidylserine is a well-evidenced nootropic phospholipid that supports neural membrane integrity, improves memory, and lowers the stress hormone cortisol. It is one of the few supplements with US official health acknowledgement for preventing cognitive impairment. Regular use suits older adults for cognitive support and athletes for cortisol management. Available at maxfit.ee.
References
- Richter, Y., Herzog, Y., Lifshitz, Y., Hayun, R., & Zchut, S. (2013). The effect of soybean-derived phosphatidylserine on cognitive performance in elderly with subjective memory complaints: a pilot study. Clinical Interventions in Aging, 8, 557–563.
- Monteleone, P., Beinat, L., Tanzillo, C., Maj, M., & Kemali, D. (1990). Effects of phosphatidylserine on the neuroendocrine response to physical stress in humans. Neuroendocrinology, 52(3), 243–248.
- Hirayama, S., Terasawa, K., Rabeler, R., Hirayama, T., Inoue, T., Tatsumi, Y., & Jäger, R. (2014). The effect of phosphatidylserine administration on memory and symptoms of ADHD: a randomised, double-blind, placebo-controlled clinical trial. Journal of Human Nutrition and Dietetics, 27(Suppl 2), 284–291.
- Kato-Kataoka, A., Sakai, M., Ebina, R., Nonaka, C., Asano, T., & Miyamori, T. (2010). Soybean-derived phosphatidylserine improves memory function of the elderly Japanese subjects with memory complaints. Journal of Clinical Biochemistry and Nutrition, 47(3), 246–255.
FAQ
Is soy-derived phosphatidylserine as good as other sources?
Yes, soy-derived PS is the most widely studied and affordable option. Some people prefer sunflower-based PS due to allergy concerns. Both are effective.
Can phosphatidylserine be taken instead of a nap?
PS does not induce sleep or drowsiness. It supports cortisol regulation, which may aid sleep quality, but it is not sedating.
How long must phosphatidylserine be taken before memory improvement shows?
In most studies, results appeared within 6–12 weeks. One study showed noticeable improvement after 3 months. It is advisable to use it for at least 6–8 weeks before evaluating results.
