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What Is Phosphatidylserine? A Plain Definition
What is phosphatidylserine? It is a phospholipid, a fat-like molecule found in the membranes of brain cells. Supplements are sold with memory claims, but they are not approved to treat any condition. Learn how to read the name on a label and what to check before you buy.
Written by the MemoPryl label deskUpdated · 4 min read
What is phosphatidylserine in plain words?
Phosphatidylserine is a phospholipid. That means it is a fat-like building block that helps form the outer skin, or membrane, of cells.
Cleveland Clinic describes it as a molecule found in brain cell membranes. Supplements are marketed to support memory and thinking, but the same page says they are not FDA-approved to treat any medical condition (Cleveland Clinic, Phosphatidyl.).
You will also see it shortened to PS on forums and labels. Same thing, shorter name. If a bottle says "phosphatidylserine" in the ingredient list, the maker is telling you this molecule is in the capsule.
An ingredient with no milligram figure beside it is a name only.
Is phosphatidylserine a drug, a food or a supplement?
It is sold as a dietary supplement, so it is treated as neither a drug nor a medicine.
FDA says it cannot approve dietary supplements for safety and effectiveness before they are sold (FDA, Using Dietary Supplements). The company must back its own label. That puts more weight on you to read what is printed.
Cleveland Clinic lists possible side effects such as upset stomach, gas, insomnia, headache, skin rash, mood changes and low blood sugar (Cleveland Clinic, Phosphatidyl.). It also says the supplement may weaken anticholinergic drugs such as atropine.
Report a bad reaction to FDA through its safety portal (FDA, Report a Supplement Problem).
What did FDA say about phosphatidylserine memory claims?
In 2003 FDA allowed two limited claims about phosphatidylserine, and both came with a blunt warning.
The letter allowed wording that it "may reduce the risk" of dementia or cognitive dysfunction in the elderly. Each claim had to carry a disclaimer that begins "Very limited and preliminary scientific research suggests." The disclaimers also state that FDA concludes there is little scientific evidence for the claim (FDA letter, PS health claim).
That is an unusual kind of permission. FDA let a company say something, and in the same breath told readers to be skeptical. Nothing on this site says phosphatidylserine prevents memory loss or dementia, and no label should either.
MemoPryl: capsules in 2, 3 or 6 bottlesRead the bottle · check your medicines · 60-day window (confirm)
See packsWhat should I check when a label lists phosphatidylserine?
Check four things: the amount, the source, the serving size and the directions. A missing line on any of them is a reason to pause.
| Line | What to look for | If it is missing |
|---|---|---|
| Amount per serving | A milligram figure next to the name | Ask the seller in writing |
| Source | Soy, sunflower or not stated | Ask, especially with an allergy |
| Serving size | How many capsules make one serving | Do not guess a dose |
| Other ingredients | Fillers, capsule shell, allergens | Ask before ordering |
Does MemoPryl list phosphatidylserine?
Phosphatidylserine is one of six names linked to MemoPryl through a sibling pack. It is not confirmed for the bottle you will receive.
Neither bottle image we hold prints a Supplement Facts panel. So there is no milligram figure, no serving size and no source. Treat the name as unconfirmed until your own bottle says otherwise. The full gap list sits on the supplement facts page, and the six names are on the ingredients page.
Keep taking any prescribed medicine, and ask your doctor or pharmacist before you start a new supplement. That matters more once a capsule mixes several herbs.
Thinking about MemoPryl?Check your medicines with a pharmacist first. Prices and the 60-day window are confirmed at checkout.
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FAQ01
MemoPryl questions people ask
Is phosphatidylserine the same as phosphatidylcholine?
No, they are different phospholipids. Both are fat-like molecules in cell membranes, but they carry different head groups and sit in different places. Check the exact spelling on a label, because the two names are easy to confuse.
Can phosphatidylserine lower blood sugar?
Cleveland Clinic lists low blood sugar among possible side effects of phosphatidylserine supplements. If you manage diabetes or take glucose medicine, ask your pharmacist before trying one, and keep taking your prescribed medicine as directed.
Is phosphatidylserine safe while pregnant?
Pregnant and nursing people should ask a provider first, which is the advice given by Cleveland Clinic. Safety data for these groups is thin, so a label that says nothing is not a green light.
Who wrote this02
Written and reviewed by
Pages built from the bottle images, the seller's product notes and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . Learn about our editorial standards and how we check reviews. This website is run by Official stocking desk for MemoPryl, not by the manufacturer or the distributor of the bottle. We make money when you buy through our order links.
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