Article
Is L Glutamine for Brain Health Backed by Research?
L glutamine for brain health is a popular search, but the research we found does not show a memory benefit. The one study we read tested stomach tolerance in 14 young men. L-glutamine is the sixth of six names listed for MemoPryl, with no amount published.
Prepared by the MemoPryl label deskUpdated · 3 min read
The evidence01
Is L glutamine for brain health backed by research?
L glutamine for brain health is not backed by the research we found. Glutamine is an amino acid, a building block of protein, and the body makes it on its own.
The one paper we read was a small tolerability pilot in 14 healthy young men (Ogden 2020, L-glutamine tolerance). It asked whether the stomach copes with a dose. It did not test memory, focus or thinking.
| Question | What we found |
|---|---|
| A memory trial in older adults | None found |
| A safety study | One small pilot, young men only |
The study02
What did the L-glutamine study actually test?
The study tested three one-time doses for gut comfort. Doses were scaled to body weight, from 0.3 to 0.9 grams per kilogram of fat-free mass (Ogden 2020, L-glutamine tolerance).
The top dose caused more belching, nausea and gut discomfort, mostly mild. These are research doses only. MemoPryl publishes no amount for any of its names.
In the formula03
Where does L-glutamine fit among MemoPryl's six names?
L-glutamine is the sixth of six names listed for MemoPryl. The names come from a sibling pack, so confirm them on your bottle.
The bottle front says "Supports Focus*". The asterisk points to the FDA disclaimer: that statement has not been evaluated (FDA, using supplements).
- 1PhosphatidylserineNot published per serving · Not known
- 2Ginkgo biloba leafNot published per serving · Not known
- 3N-Acetyl L-Carnitine HClNot published per serving · Not known
- 4St. John's wortNot published per serving · Not known
- 5Brahmi / Bacopa monnieriNot published per serving · Not known
- 6L-glutamineNot published per serving · Not known
Names only: no amounts are published. Supplement labels must list each ingredient with its amount (21 CFR 101.36, supplement labels), so the bottle itself is the check.
Side effects04
Who should ask a doctor before taking glutamine?
Anyone on prescribed medicine, pregnant, nursing or living with a long-term condition should ask first. Many supplements are untested in those groups (NCCIH, supplements wisely).
Keep taking prescribed medicine as directed, and ask your doctor or pharmacist.
- Read the L-glutamine page and the side effects guide.
Next step05
Where can you read more about the MemoPryl capsules?
The seller's checkout is where the capsules are sold, and the price shows there. A 60-day window is reported; confirm the live listing.
FAQ06
L glutamine questions
Is glutamine the same as glutamate?
No. They are related amino acids but different molecules. The paper we read measured glutamine tolerance only. We found no source showing a glutamine capsule helps thinking.
Does glutamine have side effects at high doses?
In the pilot, the top dose caused more belching, nausea and gut discomfort than lower doses (Ogden 2020, L-glutamine tolerance). Most symptoms were mild and passed within hours. Ask a pharmacist first if your stomach is sensitive.
Can older adults take L-glutamine?
We found no study in older adults, since the pilot used young men only. If you take prescribed medicine, ask your doctor or pharmacist first and keep taking your medicine as directed.
Is there a proven amount of glutamine for the brain?
No amount has been shown for the brain in the sources we read. The research doses came from a stomach study, and MemoPryl publishes no amount to compare.
Who wrote this07
Written and reviewed by
Pages built from the label, the official site, the sales page and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . Find our editorial standards and how we check reviews. This website is run by a U.S. order-link partner, not by the maker of MemoPryl. This site earns a commission when you buy through our order links.
Keep reading
More about MemoPryl
MemoPryl U.S. order-link partner
Ready to try MemoPryl?
The order link opens the seller's checkout, where the price, shipping and guarantee terms are shown. Read the bottle and check your medicines first.
- The order link opens the seller's checkout
- 60-day window reported; confirm at checkout
- Delivery terms shown at checkout
