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L-Glutamine Side Effects and Cautions
L-glutamine side effects reported in some studies include swelling, stomach symptoms, headache and fever, with case reports of liver and kidney injury. Memorial Sloan Kettering also says it may reduce the effect of lactulose. Ask your doctor or pharmacist before use, especially with liver, kidney or gut problems.
By the MemoPryl label deskUpdated · 4 min read
What are the side effects of L-glutamine?
Memorial Sloan Kettering lists peripheral edema, stomach and gut symptoms, headache, fever and infections as adverse reactions seen in some studies (MSK, Glutamine).
Reactions varied by study, and our source gives no rate for any of them. That is why this post lists them as things to watch for, not as things certain to happen.
Those studies often used glutamine for specific health reasons, so the results do not map neatly onto a daily capsule. They still show what to watch for.
If you get a reaction, stop and call your doctor. FDA says to stop using a product you think caused a serious reaction and to report it (FDA, Report a Supplement Problem).
Can L-glutamine harm the liver or kidneys?
There are case reports of it. MSK notes case reports of liver injury and acute kidney injury (MSK, Glutamine).
These are rare reports, not a measured rate, and our sources give no number. Still, they are a reason for people with liver or kidney disease to ask a doctor first.
| Topic | What the source says |
|---|---|
| Swelling | Peripheral edema in some studies |
| Stomach and gut | Gastrointestinal symptoms |
| Head and body | Headache, fever, infections |
| Organs | Case reports of liver and acute kidney injury |
| Medicines | May reduce the ammonia-lowering effect of lactulose |
If you take lactulose, ask your prescriber before any glutamine product.
Does MemoPryl list L-glutamine warnings?
No. No warning text is printed on any bottle image we have, and L-glutamine is named only on a sibling pack, unconfirmed for yours.
Tap the spots to see what the bottle front does show.
Tap a number to see what that part of the label says.
- Heading
'ADVANCED FORMULA'.
- Name and maker line
MemoPryl, with 'By NutraVibe' printed under it. We cannot confirm who makes the product.
- Claims
'Supports Concentration*', 'Supports Brain Energy*' and 'Supports Productivity*'.
- Count
'60 CAPSULES'. The other bottle image says 30.
- Product type
'DIETARY SUPPLEMENT'.
MemoPryl: capsules in 2, 3 or 6 bottlesRead the bottle · check medicines first · 60-day window (confirm)
See packsWho should ask a doctor first?
Anyone with liver, kidney or gut conditions, anyone on lactulose, and anyone pregnant or nursing should ask first. Keep taking your prescribed medicine as directed.
Show your pharmacist the full bottle. Ask the order desk for the Supplement Facts panel if yours lacks one.
Thinking about MemoPryl?Check your medicines with a pharmacist first. The checkout confirms prices and the 60-day window.
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3 bottles
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6 bottles
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Get 6 bottlesUntil the seller confirms its list, prices stay as fill-in fields. The checkout shows the final total.
See the L-glutamine page, MemoPryl side effects and the medicine guide.
FAQ01
Questions people ask about MemoPryl
Does L-glutamine cause bloating?
Our source lists stomach and gut symptoms and swelling as reactions in some studies, but it does not name bloating. If your stomach is upset after a dose, tell your pharmacist and follow your bottle.
What is lactulose and why does glutamine matter with it?
Lactulose is a medicine used to lower ammonia. MSK says glutamine may reduce that effect. Do not combine them without your prescriber knowing.
Is a natural amino acid free of side effects?
No. The body makes glutamine, yet MSK still lists adverse reactions and case reports of organ injury. Natural does not always mean safe, as NCCIH also warns.
Should I take glutamine with food?
Our sources give no timing advice, so we give none. Follow the directions printed on your bottle. If none are printed, ask the order desk or your pharmacist before the first capsule.
Who wrote this02
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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