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Dietary supplement

Glutamine Powder Ingredients & Drug Interactions

by Iron-Tek

Glutamine Powder label
See full label image
Powder Category: Amino Acid/protein
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Glutamine Powder 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 Powder is a dietary supplement by Iron-Tek 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. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Glutamine Powder by Iron-Tek

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

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HelloPharmacist Scorecard of Glutamine Powder by Iron-Tek

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.

Iron-Tek Glutamine Powder contains one active ingredient: L-glutamine, an amino acid your body produces naturally and uses for immune function, gut health, and muscle repair. There are no inactive ingredients listed for this product — it's pure glutamine powder.

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

Glutamine is rated as effective for sickle cell disease. For HIV/AIDS-related wasting, postoperative recovery, and critical illness from trauma, the evidence is rated as possibly effective — meaning some trials show promise, but more research is needed to be sure.

The data we hold doesn't establish effectiveness for other uses.

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.

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

Headache and musculoskeletal pain have also been reported. High doses (10–30 grams daily) used in clinical trials have triggered similar GI symptoms.

In rare cases, dizziness and mood changes (mania or hypomania) have been reported in people with bipolar disorder, though dizziness resolved when the dose was reduced. If you have kidney or liver disease, use glutamine only under medical supervision.

There isn't enough safety data to recommend supplement doses during pregnancy or breastfeeding unless your doctor advises it — talk it over with your healthcare provider about what's right for your situation.

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.

If you take anticonvulsant medications (seizure drugs), check with your doctor or pharmacist before using this product. Glutamine may theoretically reduce how well these medications work, though this hasn't been confirmed in patients yet.

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.

If you have sickle cell disease, your doctor may recommend glutamine as part of your care. If you're dealing with wasting from HIV/AIDS, recovering from surgery, or in critical illness, ask your doctor whether it might help — the evidence is promising but not yet definitive.

Before starting, check with your pharmacist if you take anticonvulsant (seizure) medication. Digestive side effects are common, especially at higher doses.

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 24, 2015.

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 Powder, straight from the product label.

Brand Iron-Tek
Barcode (UPC) 666999141003
Net contents 38.8 oz.; 2.4 lbs; 1.1 kg
Market status On market
Date entered into DSLD Nov 24, 2015
DSLD ID 53376
Product type Amino Acid/protein
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Kosher, Gluten Free, Dairy Free
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 Powder by Iron-Tek, 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:
1 tsp
Maximum serving Sizes:
1 tsp
Servings per container
220
UPC/BARCODE
666999141003
IngredientAmount% DV
L-Glutamine5 Gram(s)--

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.
Precautions

Do not accept if seal is broken.

Keep out of the reach of children.

As a reminder, discuss the supplements and medications that you take with your health care providers.

CAUTION: If you are pregnant or nursing, taking medication or planning a surgery, consult your doctor before using this product.

If any adverse reactions occur, stop taking the product and consult your doctor.

General

Product No. 14-100 07H14L

Storage

Store between 59(0)-86(0) F.

General Statements

Contents packed by weight not volume. Some settling may occur.

Mixes easily without a blender. No aftertaste. Unflavored. Glutamine, the most abundant amino acid in the human body, helps support muscle tissue.** Intense physical exercise utilizes the body’s Glutamine stores, therefore Glutamine is an important sports-related nutrient. It is especially concentrated in muscle tissue where it is the most abundant “free” amino acid.** Free form amino acids are readily available for various uses by the muscles and other areas of the body.**

CLEAN PERFORMANCE

CLEAN PERFORMANCE PRODUCT

Formula

IRON-TEK GLUTAMINE POWDER FEATURES: Five (5) grams of L-Glutamine per serving.

Brand IP Statement(s)

IRON-TEK GLUTAMINE POWDER BENEFITS: - Helps the body support muscle tissue.** - Important sports-related nutrient. - Contributes to glycogen storage in the muscles.** - Important component of glutathione, a mediator with antioxidant properties.**

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.

Dietary Supplement

Seals/Symbols

HIGH QUALITY

GF Certified Gluten-Free

AVA Certified Vegan American Vegetarian Association

Good Manufacturing Practices GMP CERTIFIED

Our manufacturing supports wind power renewablechoice.com

PLEASE RECYCLE

AJIPURE AMINO ACIDS

K

Formulation

Certified Gluten-Free

NO: Yeast, corn, wheat, soy, gluten, milk, salt, sugar, preservatives, artificial color, artificial flavor or artificial sweeteners.

Suggested/Recommended/Usage/Directions

DIRECTIONS FOR USE: Adults mix (1) level teaspoon (5 g) with cold liquids one (1) to three (3) times daily.

FOR OPTIMAL RESULTS: Adults take one (1) 5 gram serving immediately following workout. This product may be taken in conjunction with Iron-Tek Essential Creatine Monohydrate and Iron-Tek Essential Protein 100% Pure Whey.

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

See for yourself

Glutamine Powder by Iron-Tek label

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

Glutamine Powder 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 Powder by Iron-Tek

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

Serving size1 tsp Dosage formPowder Servings per container220 Amounts shown are per serving.

L-Glutamine

Interacts with
50 drugs
5 Gram(s) 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 monograph & interactions
Interaction report

Glutamine Powder by Iron-Tek Drug Interactions

Want to check YOUR meds against Glutamine Powder?

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

L-Glutamine 50

Individual Drug Interactions

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

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

Each ingredient & the kinds of drugs it affects

For each ingredient in Glutamine Powder 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-Glutamine1 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
L-Glutamine full monograph & interactions
The maker

Brand information

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

Iron-Tek

See all Iron-Tek products
Name
Country Life, LLC (Iron-Tek)
Street Address
108 Vanderbilt Motor Pkwy
City
Happauge
State
NY
ZipCode
11788
Web Address
countrylifevitamins.com
Pharmacist Counseling Corner

Glutamine Powder by Iron-Tek: Common Questions

Does Glutamine Powder by Iron-Tek interact with any medications?
Yes. Based on its ingredients, Glutamine Powder 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 Powder 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's glutamine, and why would I take it?
L-glutamine is an amino acid your body makes naturally. It supports immune function, gut health, and muscle repair. Glutamine supplements are used most often in sickle cell disease, for muscle wasting related to HIV/AIDS, to aid recovery after surgery, and during severe illness.
Will this upset my stomach?
Digestive side effects are common — belching, bloating, gas, constipation, nausea, diarrhea, and stomach pain have all been reported. High doses (10–30 grams daily) are more likely to cause these. Start with a lower dose and see how you feel, and talk to your pharmacist if symptoms don't settle.
Is it safe during pregnancy or while breastfeeding?
There isn't enough safety data to know whether supplement doses are safe during pregnancy or breastfeeding. Talk with your doctor or pharmacist about whether glutamine is right for you in either situation — they can weigh your individual needs.
Does it really work for what it claims?
Glutamine is proven effective for sickle cell disease. For HIV/AIDS wasting, recovery after surgery, and critical illness, the evidence is promising but not yet definitive — some trials show benefit, but more research is needed.
I have kidney disease — can I take this?
If you have kidney or liver disease, don't use glutamine supplements without checking with your doctor first. You'll need medical supervision to make sure it's safe for your situation.
What if I have bipolar disorder?
Rare cases of mood changes (mania or hypomania) have been reported in people with bipolar disorder taking glutamine. Talk with your psychiatrist or doctor before starting this supplement.

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

Not sure if Glutamine Powder is safe with your meds?

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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 Powder label
Go deeper

The Full Monographs Behind Glutamine Powder’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 Powder'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

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