Ingredient: named sixth
L-Glutamine in MemoPryl: What It Is and What It Does
L-glutamine is an amino acid, and it is one of six names tied to MemoPryl on a sibling pack. It is unconfirmed for your bottle and the amount is not printed. The body makes it and food supplies it. Memorial Sloan Kettering does not describe it as a memory supplement. Ask your doctor or pharmacist first.
By the MemoPryl label deskUpdated
The basics01
What is L-glutamine in MemoPryl?
L-glutamine is an amino acid, one of the units that build protein. It is named on a sibling MemoPryl pack in the same listing family, and it is unconfirmed for the bottle you receive.
Memorial Sloan Kettering says the body makes and stores glutamine, mostly in muscle and lung tissue, and that food supplies it too (MSK, Glutamine). So a capsule adds to what you already get. It is not a nutrient most adults lack.
No Supplement Facts panel is printed on any image we have, so the amount is not printed. The two bottle images also disagree: label A says 30 capsules and label B says 60. Your bottle is the source of truth.
Why does that matter? Because a long ingredient list can look strong while each name does little on its own. With no amounts printed, a reader cannot tell whether glutamine is a main part of a capsule or a trace. Ask the seller's order desk at +1 (302) 200-3480 if the bottle you hold shows no panel.
| Name as the seller lists it | L-Glutamine |
|---|---|
| What it is | An amino acid that the body makes and that food provides |
| On the bottle? | Unconfirmed: listed in the seller's notes for a sibling pack; we were given no Supplement Facts panel |
| Amount per capsule | Not printed (no Supplement Facts panel supplied) |
| Amount used in research | No memory or thinking trial cited |
| Strength of evidence | MSK does not describe it as a memory supplement and says evidence is lacking for its other claimed uses |
| Marketed use | Sold for energy and recovery |
| Main caution | Some studies report swelling, stomach symptoms and headache, with rare reports of liver and kidney injury. |
Evidence02
Does L-glutamine help memory?
No memory or thinking trial is cited for it here. Glutamine is not described by MSK as a memory or cognitive supplement (MSK, Glutamine).
The same source says evidence is lacking for glutamine supplements to build muscle mass and strength (MSK, Glutamine). That is the use people ask about most, and even that has weak support.
The seller's notes sell the capsule for brain energy. Glutamine has roles in the body, and that can sound relevant. A role in the body is not the same as a benefit from a capsule, and no study we cite links the two.
When a source is silent on a use, we say so instead of filling the gap. Brain energy is a label phrase on bottle B, quoted as wording only, and it is not a measured result.
Memory trial
None cited.
Amount in MemoPryl
Not printed.
Product trial
None exists.
Compare the other five names on the ingredients overview.
Safety03
What are the side effects of L-glutamine?
Some studies report swelling in the legs, stomach symptoms, headache, fever and infections. MSK also notes case reports of liver injury and acute kidney injury (MSK, Glutamine).
The source lists these as case reports, which means single patients, not proof of cause. They are a reason to ask, not a reason to panic. People with liver or kidney disease should talk with their doctor before using any glutamine supplement.
Reassuring points
- The body makes it and food supplies it.
- Most reports are mild.
Open questions
- The amount in MemoPryl is not printed.
- Rare liver and kidney reports exist.
- No memory benefit is shown.
Medicines04
Does L-glutamine interact with medicines?
It can, in at least one case. MSK says glutamine may reduce the ammonia-lowering effect of lactulose (MSK, Glutamine).
Lactulose is prescribed for liver problems and constipation. If you use it, ask your doctor or pharmacist before you add glutamine. The other five names matter more for medicines, so read the whole list.
| Name | Main medicine caution |
|---|---|
| St. John's wort | Weakens antidepressants, birth control pills, warfarin and more |
| Ginkgo biloba | May raise bleeding risk with blood thinners |
| Bacopa | Thyroid and cholinergic drugs |
| L-glutamine | Lactulose |
Ask your doctor or pharmacist before you start, and show them the bottle. Never stop a prescription on your own.
MemoPryl: capsules in 2, 3 or 6 bottlesRead the bottle · check medicines first · 60-day window (confirm)
See packsAsk first05
Who should ask a pharmacist before using L-glutamine?
Ask first if you have liver disease, kidney disease, take lactulose, are pregnant or nursing, or live with any long-term condition. The same goes for anyone who takes a prescription.
Adults only (18+) should use MemoPryl, and a child should never be given a capsule. A pharmacist can read the real ingredient list in a minute and catch clashes you would miss. That one visit is cheap compared with a reaction.
Your bottle06
How can I check L-glutamine on my bottle?
Read the Supplement Facts panel for "L-glutamine" and an amount in milligrams. If the panel is missing, the name is absent or no amount is shown, the seller's notes' list does not describe your bottle.
- Match the name and the amount to the panel.
- Read the other ingredients line for the capsule shell.
- Follow the directions on the bottle, not a number from a website.
- Report a serious reaction to FDA and stop the product (FDA, Report a Supplement Problem).
FDA does not approve supplements before they go on sale (FDA, Using Dietary Supplements). Label claims carry an FDA disclaimer for that reason (FDA, Structure/Function Claims).
Keep reading07
What should I read after L-glutamine?
Read about St. John's wort next, since it carries the biggest warning of the six.
The medicine interaction guide and the side effects guide cover the whole capsule.
FAQ08
L-glutamine questions
Is L-glutamine in MemoPryl?
L-glutamine is named on a sibling MemoPryl pack, and that is unconfirmed for your bottle. No Supplement Facts panel was supplied, so no amount is known. Check the panel on the bottle you receive.
What does L-glutamine do for the brain?
The body uses glutamine in many tissues, but MSK does not describe it as a memory supplement. We cite no trial showing a capsule improves memory or focus. Treat any brain claim as unproven.
Is L-glutamine safe to take every day?
For many adults it appears well tolerated, but we cannot give a daily limit. Reported effects include swelling, stomach upset and headache. Ask your doctor or pharmacist, especially with liver or kidney disease.
Can L-glutamine cause side effects?
Yes. Some studies report leg swelling, stomach symptoms, headache and fever. Rare cases of liver and kidney injury were reported. Stop and call your doctor if something feels wrong.
Is L-glutamine the same as glutamate?
No. Glutamine is an amino acid the body can turn into glutamate, but they are different molecules. Our sources do not compare their effects on memory, so we make no claim about it.
Does L-glutamine interact with lactulose?
Possibly. According to MSK, glutamine may reduce the ammonia-lowering effect of lactulose. Ask your doctor or pharmacist before you combine them, and keep taking the medicine as prescribed.
Who wrote this09
Written and reviewed by
Each page draws on the bottle images, the seller's product notes and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . See our editorial standards and how we check reviews. This website is run by MemoPryl USA retail, not by the manufacturer or the distributor of the bottle. We are paid a commission when you buy through our order links.
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MemoPryl USA retail
Ready to look at MemoPryl?
Read the bottle you receive and go over your medicines with a pharmacist before you pick a pack. The checkout confirms prices and the guarantee terms.
- Order desk: +1 (302) 200-3480
- 60-day window (confirm at checkout)
- Ships from the U.S. unless the checkout says otherwise
