L-glutamine
L-Glutamine in MemoPryl
L-glutamine is a named MemoPryl ingredient with no published amount. It is an amino acid the body makes and eats in protein. We found no memory trial for it. Large single doses can upset the stomach, and the amount in MemoPryl is not published.
Prepared by the MemoPryl label deskUpdated
Background01
What is L-glutamine in MemoPryl?
L-glutamine is an amino acid, a building block of protein, and it is the sixth name on the MemoPryl list. Your body makes it, and you also get it from food such as meat, eggs and dairy.
The brief for MemoPryl lists it last, and sponsored coverage of the vendor names it as well, with no milligrams (Sponsored coverage of the vendor). We did not find why it was included.
The bottle front promises "Supports Focus*", "Optimized Memory*" and "Improves Mental Clarity*". None of those claims is tied to L-glutamine in any source we read.
| Name on the label | L-glutamine |
|---|---|
| What it is | An amino acid the body makes and eats in protein |
| Group on the panel | Nutrients and amino acids |
| Amount per serving (label) | Not published |
| % Daily Value | Not known |
| Amount used in research | No studied dose for memory |
| Strength of evidence | No evidence for memory in the sources found |
| Marketed or traditional use | Marketed as a building block |
| Main caution | Large single doses can upset the stomach. |
The research02
Is L-glutamine good for memory?
We found no trial showing that L-glutamine helps memory. The paper we cited is about stomach tolerance, not thinking.
That study gave 14 healthy young men three different single doses. The highest dose caused more stomach symptoms, such as belching, nausea and gut discomfort. Most were mild and faded within about four hours (Ogden 2020, L-glutamine tolerance).
The authors judged the doses generally well tolerated, but the group was small, young and all male. Its background section says routine glutamine use is not generally recommended for healthy people (Ogden 2020, L-glutamine tolerance).
A council of brain-health experts found insufficient evidence for supplements for most adults (AARP/GCBH, brain supplements). The gap is not proof of harm or of benefit. It is missing evidence, and it leaves the claim unsupported.
| Question | Answer from our sources |
|---|---|
| Memory trial in people | None found |
| Short-term stomach effects | More symptoms at the highest dose, mostly mild (Ogden 2020, L-glutamine tolerance) |
| Long-term safety of daily use | Not covered by the paper we read |
| Amount in MemoPryl | Not published |
Food and body03
Do you already get L-glutamine from food?
Yes, most people take in L-glutamine every day through protein foods, and the body makes it too. A capsule is not the only source.
That is a reason to be careful with claims. Because it is already part of normal eating, a supplement is not "adding something missing" in any way we could check.
Whether a capsule dose changes anything for memory is the question no trial we found answers. Researchers would need to test it in older adults, over months, against a placebo. We saw no such study.
The same caution applies to every name on this list. A familiar word on a label is not evidence. A trial of the finished capsules would be. If you eat a mixed diet, a plate with eggs or beans already gives you some.
In your body
The body makes glutamine on its own.
In your food
Protein foods contain it as part of ordinary eating.
In a capsule
The MemoPryl amount is not published, so no comparison is possible.
More on food and daily habits is in our guide to brain-healthy habits.
Side effects04
What are the side effects of L-glutamine?
The side effects reported for L-glutamine are mostly stomach related, such as belching, nausea and gut discomfort. They appeared at the highest dose in the tolerability study (Ogden 2020, L-glutamine tolerance).
We found no medicine interaction list for it in our sources. That is not the same as none existing. Ask your pharmacist about the whole formula, because other names on the list matter more. St. John's wort in particular has many interactions (NCCIH, herb-drug interactions).
Keep taking prescribed medicine as directed. If a capsule upsets your stomach, stop and call your pharmacist or doctor. You can report problems to the FDA (FDA, report a problem).
What the study supports
- Single doses were generally well tolerated in healthy young men
- Stomach symptoms were mostly mild and short
What it does not cover
- Older adults, women and people on medicines
- Daily use over weeks or months
- Any effect on memory
Pregnant, nursing or under 18? Talk to a doctor first. The study we read did not include those groups, so it cannot speak for them.
See also MemoPryl side effects.
Before you order05
How do you check L-glutamine on your MemoPryl bottle?
Look for "L-glutamine" in the Supplement Facts panel and write down the amount. This site found no panel and prints no amount.
Labels may show "glutamine" or "L-glutamine" with a number in milligrams or grams. That number is what you compare, not a studied dose, because no memory dose exists.
If your bottle names other ingredients, such as branched-chain amino acids, it is another formula under a similar name. Ask the order desk before you take it.
Find the line
Look for L-glutamine on the panel.
Write the number down
Note the amount and the serving size it applies to.
Ask about the whole bottle
Show a pharmacist the full list, not just this one name.
The supplement facts page explains what is missing from the public record.
Keep reading06
What should you read next about MemoPryl ingredients?
Read the profiles of the other five names, starting with the herbs. They carry most of the medicine cautions.
If forgetfulness is getting in the way of daily life, see a doctor (CDC, dementia signs).
FAQ07
MemoPryl questions people ask
What does L-glutamine do in the body?
L-glutamine is an amino acid, a building block of protein, and the body makes it. Our sources do not describe a memory role. We found no trial linking L-glutamine capsules to memory, focus or mental clarity.
Is L-glutamine a nootropic?
It is sold in many supplements, but we found no study showing it improves thinking. The tolerability paper we read looked at stomach effects, not memory (Ogden 2020, L-glutamine tolerance). Treat any brain claim for it as unproven.
Can L-glutamine upset your stomach?
It can at high single doses. In a small study, the highest dose caused more belching, nausea and gut discomfort, mostly mild and gone within about four hours (Ogden 2020, L-glutamine tolerance). The MemoPryl amount is unknown.
Is it safe to take L-glutamine every day?
The study we read tested single doses, not daily use, and says routine use is not generally recommended for healthy people (Ogden 2020, L-glutamine tolerance). Ask your doctor before a daily supplement, especially with medicines.
Does L-glutamine interact with medicines?
We found no interaction list in our sources, which does not prove there are none. Ask a pharmacist, and carry on with prescribed medicine. Other MemoPryl names, like St. John's wort, matter more (NCCIH, herb-drug interactions).
How much L-glutamine is in MemoPryl?
The amount is not published. We found no Supplement Facts panel, so this site gives no figure. Read the panel on your bottle and compare it with the six names listed.
Can you get enough glutamine from food instead of capsules?
Protein foods contain it, and the body makes it as well. Whether a capsule adds anything for memory has not been shown in the sources we found. Ask your doctor if you wonder whether your diet falls short.
Who wrote this08
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.
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