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

Glutamine Ingredients & Drug Interactions

by EFX Sports

Glutamine label
See full label image
Capsule Category: Amino Acid/protein
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Glutamine against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Glutamine is a dietary supplement by EFX Sports 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 GlutaZorb. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Glutamine by EFX Sports

Ask about any prescription or over-the-counter medication and we check it for interactions with Glutamine by EFX Sports — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Glutamine by EFX Sports

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

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 6, 2026

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.

EFX Sports Glutamine is a single-ingredient supplement: GlutaZorb, a form of the amino acid glutamine. Glutamine is a building block your body uses to support muscle, immune function, and gut health—especially during stress, illness, or intense training.

The capsule also contains inactive ingredients (silicon dioxide, magnesium stearate, and maltodextrin) used to fill and bind the supplement.

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: muscle recovery and athletic performance support.
  • We looked for evidence on: Athletic performance, Exercise-induced muscle damage, Postoperative recovery, Wound healing, Critical illness (trauma), muscle strength — and 2 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.

The evidence is strongest for sickle cell disease, where glutamine is rated effective. For HIV/AIDS-related wasting, postoperative recovery, and critical illness after trauma, the evidence is rated possibly effective—meaning early research looks promising, but we need more studies to be sure.

Talk with your doctor about whether glutamine makes sense for your specific situation.

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.

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

Headache and musculoskeletal pain have also been reported. If you have kidney or liver disease, use glutamine only under medical supervision.

There isn't enough safety data to recommend supplement doses during breastfeeding unless your doctor advises it. Pregnancy safety is rated likely safe, but confirm with your own doctor before starting.

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 type to double-check before taking this product. Glutamine might theoretically work against them, though this hasn't been reported in patients yet.

Search your exact medication name on this page or ask your doctor or pharmacist before you start.

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.

Glutamine may help with sickle cell disease and possibly with recovery after surgery, trauma, or in HIV/AIDS-related weight loss. It's generally well tolerated but can cause stomach upset, especially at higher doses.

If you take anticonvulsant medication, check your specific drug on this page before starting. Talk with your doctor about whether it's right for you.

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 Feb 24, 2017.

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 Glutamine, straight from the product label.

Brand EFX Sports
Barcode (UPC) 737190002001
Net contents 120 Capsule(s)
Market status On market
Date entered into DSLD Feb 24, 2017
DSLD ID 71275
Product type Amino Acid/protein
Supplement form Capsule
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 Glutamine by EFX Sports, 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
60
UPC/BARCODE
737190002001
IngredientAmount% DV
GlutaZorb1500 mg--

Other ingredients: Capsule, Silicon Dioxide, Magnesium Stearate, Maltodextrin

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.
Brand IP Statement(s)

GlutaZorb Super absorbent Glutamine GlutaZorb is a registered trademark of All American Pharmaceutical. GlutaZorb is patent pending.

Proudly manufactured by All American Pharmaceutical

2016 EFX Sports

Storage

Storage: Keep lid tightly closed in a cool, dry place away from children.

Precautions

Storage: Keep lid tightly closed in a cool, dry place away from children.

General Statements

EU Plant# 1000135313

Made in USA. In God we trust.

Benefits of Glutamine Glutamine is a powerful amino acid that your body demands during intense exercise and metabolic stress (which includes injury, illness, dieting, etc). Depletion of Glutamine stores can decrease strength, stamina, and recovery. Many hard training athletes supplement their diet with glutamine to aid performance and recovery.

Our scientist, Dr. Golini, discovered that buffering glutamine molecules creates a more stable form of Glutamine.

Recovery

Training ground

General

AAC497-120

Formula

The GLutaZorb difference! Patent-pending GlutaZorb is an ultra-pure, pH-Correct Glutamine made using an enzymatically modified buffered fermentation process.

GlutaZorb

Stable Glutamine

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take 2 capsules in the morning and 2 capsules in the evening.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Glutamine by EFX Sports label

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

Glutamine label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Glutamine by EFX Sports

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

Serving size2 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

GlutaZorb

Interacts with
50 drugs
1500 mg 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...

GlutaZorb monograph & interactions

Other (inactive) ingredients: Capsule, Silicon Dioxide, Magnesium Stearate, Maltodextrin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Glutamine by EFX Sports Drug Interactions

Want to check YOUR meds against 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

GlutaZorb 50

Individual Drug Interactions

The ingredients in Glutamine interact with 50 drugs. Click any drug to see the details.

1 of the 1 ingredient in Glutamine interact with drugs. Each result below shows which ingredient is responsible. GlutaZorb

Each ingredient & the kinds of drugs it affects

For each ingredient in 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.

GlutaZorb1 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
GlutaZorb full monograph & interactions
The maker

Brand information

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

EFX Sports

See all EFX Sports products
Name
EFX Sports
City
San Jose
State
CA
ZipCode
95124
Phone Number
(888) 238-1864
Web Address
EFXSPORTS.com
Pharmacist Counseling Corner

Glutamine by EFX Sports: Common Questions

Does Glutamine by EFX Sports interact with any medications?
Yes. Based on its ingredients, 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?
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 are the most common side effects?
Stomach issues are most common: bloating, gas, constipation, diarrhea, nausea, and stomach pain. Headache and musculoskeletal pain have also been reported. Most people tolerate it well, but high doses are more likely to cause GI upset.
Is it safe to take while pregnant or breastfeeding?
Pregnancy safety is rated likely safe. For breastfeeding, there isn't enough data to say either way—talk with your doctor before taking supplement doses while nursing.
Does it help with muscle recovery after workouts?
The data we hold shows glutamine is possibly effective for postoperative recovery and recovery from critical illness. We don't have evidence specifically for workout recovery in the facts we hold, so ask your doctor whether it makes sense for your training.
Can I take it if I have kidney or liver disease?
Only under medical supervision. If you have either condition, talk with your doctor before starting glutamine.
What is GlutaZorb?
It's the form of glutamine used in this product—the amino acid your body breaks down to support muscle, immune function, and gut health.

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

Not sure if 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.

Glutamine label
Go deeper

The Full Monographs Behind Glutamine’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Glutamine

Interacts with 50 drugs

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 cell disease complications, but for most...

Read the full Glutamine monograph →
Sources

Sources & How We Checked

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
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team