Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

L-Glutamine Ingredients & Drug Interactions

by InterActive Nutrition

Powder Category: Amino Acid/protein
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

L-Glutamine is a dietary supplement by InterActive Nutrition with 1 active ingredient. Its ingredients are commonly taken for muscle recovery and sports performance, gut health and 'leaky gut', recovery from severe illness or injury.Based on those ingredients, 50 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are L-Glutamine, Powder. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of L-Glutamine by InterActive Nutrition

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: L-glutamine in powder form. L-glutamine is an amino acid your body naturally makes and uses to support gut health, immune function, and muscle recovery.

It's the building block your cells need after intense exercise, surgery, or during illness.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: immune function and muscle recovery after exercise.
  • We looked for evidence on: Athletic performance, Exercise-induced muscle damage, Postoperative recovery, Wound healing, Critical illness (trauma), Oral mucositis — and 4 related terms.
  • The strongest evidence on file: Glutamine is rated "Possibly Effective" for Critical illness (trauma) (Natural Medicines).
  • Also on file: Glutamine is rated "Possibly Effective" for Postoperative recovery.
  • Also on file: Glutamine is rated "Possibly Ineffective" for Athletic performance, Radiation-induced diarrhea.

L-Glutamine is rated effective for sickle cell disease. For HIV/AIDS-related wasting, postoperative recovery, and recovery from critical illness or trauma, it's rated possibly effective—meaning there's some evidence it may help, but more research is needed to be certain.

The evidence, ingredient by ingredient Glutamine

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

L-Glutamine is generally well tolerated in healthy adults. The most common side effects are digestive: belching, bloating, gas, constipation, diarrhea, nausea, and stomach pain.

Headache and musculoskeletal pain have also been reported. High doses—10 to 30 grams daily—used in clinical trials increased the risk of these GI effects.

A few rare cases of dizziness, mania, and hypomania have been reported, mostly in people with bipolar disorder or at very high doses. If you have kidney or liver disease, use it only under medical supervision.

There isn't enough safety data to recommend glutamine supplements during pregnancy or breastfeeding unless your doctor advises it—talk with them for personalized guidance.

Side effects, ingredient by ingredient Glutamine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Glutamine.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: seizure medications.
  • For scale: 50 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Anticonvulsant medications (seizure drugs) are the main concern—glutamine might theoretically reduce how well they work to prevent seizures, though this hasn't been seen in actual patients yet. Check with your doctor or pharmacist before combining this supplement with your exact seizure medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

L-Glutamine may help with sickle cell disease and could support recovery after surgery or during serious illness, though more evidence is needed for those uses. If you take anticonvulsants (seizure medication), check with your doctor or pharmacist before starting, because this supplement may theoretically interfere with how they work.

For any other medications, use the checker below, and talk it over with your own healthcare provider.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Nov 25, 2011.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about L-Glutamine, straight from the product label.

Brand InterActive Nutrition
Barcode (UPC) 625486603462
Net contents 1.1 lb; 500 g
Market status On market
Date entered into DSLD Nov 25, 2011
DSLD ID 2437
Product type Amino Acid/protein
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for L-Glutamine by InterActive Nutrition, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
5 Gram(s)
Maximum serving Sizes:
5 Gram(s)
Servings per container
100
UPC/BARCODE
625486603462
IngredientAmount% DV
L-Glutamine, Powder5 g--

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions

Direction for Use: Dissolve one scoop (approximately 5 grams) of L-Glutamine powder in one glass of cool water and drink immediately.

Dose: (Adults): One scoop (approximately 5 grams), 1 to 2 times daily.

Precautions

Keep away from children.

Caution: Not intended for pregnant or breastfeeding women. People with health conditions should consult a health care practitioner before consuming L-Glutamine products.

Produced in a facility that uses ingredients which may contain milk, egg, soy, wheat, peanut, fish and shellfish.

Do not use if the security seal is broken.

FDA Disclaimer Statement

†This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Storage

Store in a cool, dry place.

General

Code# 630104

General Statements

HELPS SUSTAIN IMMUNE SYSTEM FUNCTION AND FACILITATE MUSCLE GLYCOGEN RECOVERY AFTER INTENSE EXERCISE

L-GLUTAMINE POWDER DIETARY SUPPLEMENT

MICRONIZED

People with health conditions should consult a health care practitioner before consuming L-Glutamine products.

Recommended use or Purpose: Help sustain immune system function and facilitate muscle glycogen recovery after intense exercise.†

This product is packed by weight and not volume; some settling may occur in shipping.

Seals/Symbols

Certified cGMP

Made in Canada FROM DOMESTIC AND IMPORTED INGREDIENTS

See for yourself

L-Glutamine by InterActive Nutrition label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in L-Glutamine by InterActive Nutrition

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size5 Gram(s) Dosage formPowder Servings per container100 Amounts shown are per serving.

L-Glutamine, Powder

Interacts with
50 drugs
5 g per serving

Glutamine is the most abundant amino acid in the body and is usually made in your muscles. A prescription form is FDA-approved to help reduce sickle c...

L-Glutamine, Powder monograph & interactions
Interaction report

L-Glutamine by InterActive Nutrition Drug Interactions

Want to check YOUR meds against L-Glutamine?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

Go to the checker
50Drugs
50 Moderate

Ingredients driving the most interactions

Each ingredient & the kinds of drugs it affects

For each ingredient in L-Glutamine with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

L-Glutamine, Powder1 drug type · 50 drugs

Anticonvulsants

Theoretically, glutamine might antagonize the effects of anticonvulsant medications.
Glutamine is metabolized to the excitatory neurotransmitter glutamate. Glutamate might have antagonistic effects with anticonvulsant drugs. However, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
The maker

Brand information

Manufacturer and brand details for L-Glutamine, from the product label.

InterActive Nutrition

See all InterActive Nutrition products
Name
Nutritional Brands International, LLC.
Street Address
150 US HWY 1, Suite 505
City
Jupiter
State
Florida
ZipCode
33477
Web Address
www.interactivenutrition.com
Pharmacist Counseling Corner

L-Glutamine by InterActive Nutrition: Common Questions

Does L-Glutamine by InterActive Nutrition interact with any medications?
Yes. Based on its ingredients, L-Glutamine has a known interaction with 50 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
L-Glutamine contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What does L-glutamine do in the body?
L-glutamine is an amino acid that supports your gut lining, immune system, and muscle recovery. Your body makes it naturally, and supplemental doses are meant to boost those functions—especially helpful after surgery, during intense exercise, or when you're seriously ill.
Can I take this if I'm pregnant or breastfeeding?
The safety data for supplemental doses during pregnancy and breastfeeding isn't solid enough to recommend it without medical guidance. Talk with your doctor or pharmacist about whether it makes sense for your situation.
What side effects should I expect?
Digestive upset is most common—bloating, gas, diarrhea, constipation, nausea, and stomach pain. Headache and muscle pain have been reported too. Stick to moderate doses; very high doses (10–30 grams daily) increase the risk of GI side effects.
Do I need medical supervision to take this?
If you have kidney or liver disease, yes—use it only under medical supervision. Otherwise, it's generally safe in healthy adults at standard doses, but always check with your doctor or pharmacist first, especially if you take any medications.
Is this powder effective for muscle recovery after workouts?
The evidence on file shows effectiveness for sickle cell disease and possible effectiveness for recovery after surgery and critical illness, but we don't have established evidence for routine postworkout muscle recovery in the data we hold. Your doctor can advise on whether it fits your needs.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if L-Glutamine is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

L-Glutamine label
Sources

Sources & How We Checked

L-Glutamine's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 11 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Glutamine 11 references
  1. Miller AL. Therapeutic considerations of L-glutamine: a review of the literature. Altern Med Rev 1999;4:239-48..
  2. Bozzetti F, Biganzoli L, Gavazzi C, et al. Glutamine supplementation in cancer patients receiving chemotherapy: a double-blind randomized study. Nutrition 1997;13:748-51.. PubMed
  3. Mebane AH. L-Glutamine and mania. Am J Psychiatry 984;141:1302-3.
  4. Meldrum BS. Glutamate as a neurotransmitter in the brain: review of physiology and pathology. J Nutr 2000;130:1007S-15S.. PubMed
  5. Garlick PJ. Assessment of the safety of glutamine and other amino acids. J Nutr 2001;131:2556S-61S.. PubMed
  6. Chapman AG. Glutamate and epilepsy. J Nutr 2000;130:1043S-5S.. PubMed
  7. Ziegler TR. Glutamine supplementation in cancer patients receiving bone marrow transplantation and high dose chemotherapy. J Nutr 2001;131:2578S-84S.. PubMed
  8. Laviano A, Molfino A, Lacaria MT, Canelli A, De Leo S, Preziosa I, Rossi Fanelli F. Glutamine supplementation favors weight loss in nondieting obese female patients. A pilot study. Eur J Clin Nutr. 2014 Nov;68(11):1264-6. PubMed
  9. Endari (l-glutamine) [package insert]. Torrance, CA: Emmaus Medical,Inc; 2017.
  10. Niihara Y, Miller ST, Kanter J, et al. A Phase 3 Trial of l-Glutamine in Sickle Cell Disease. N Engl J Med 2018;379(3):226-35. doi: 10.1056/NEJMoa1715971.
  11. Ogden HB, Child RB, Fallowfield JL, et al. Gastrointestinal Tolerance of Low, Medium and High Dose Acute Oral l-Glutamine Supplementation in Healthy Adults: A Pilot Study. Nutrients. 2020;12(10):2953. PubMed

See these in context on the Glutamine monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring