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Dietary supplement

Micronized Glutamine 5.0 g Ingredients & Drug Interactions

by BodyBuilding.com Foundation Series

Micronized Glutamine 5.0 g label
See full label image
Powder 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 Micronized Glutamine 5.0 g 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

Micronized Glutamine 5.0 g is a dietary supplement by BodyBuilding.com Foundation Series 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 Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series

Ask about any prescription or over-the-counter medication and we check it for interactions with Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series

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 20, 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.

This product contains one active ingredient: L-glutamine, 5 grams per serving. Glutamine is an amino acid your body makes naturally and uses for protein building and immune function.

The powder form includes micronized glutamine, which means the particles are very finely ground for easier mixing and absorption.

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: post workout muscle recovery support.
  • We looked for evidence on: Exercise-induced muscle damage, Athletic performance, Postoperative recovery, Wound healing, Critical illness (trauma), Muscle protein synthesis — and 1 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 supports glutamine as effective for sickle cell disease. It's rated possibly effective for HIV/AIDS-related wasting, postoperative (after surgery) recovery, and critical illness from trauma.

Outside those uses, the evidence we hold doesn't establish its effectiveness.

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 by healthy adults when taken by mouth. The most common side effects are gastrointestinal—belching, bloating, gas, constipation, diarrhea, nausea, vomiting, and stomach pain.

Headache and musculoskeletal pain have also been reported. Very rarely, dizziness has occurred, and there are isolated reports of mania or hypomania in people with bipolar disorder taking glutamine.

If you have kidney or liver disease, use this only under medical supervision. During pregnancy, glutamine is rated likely safe.

During breastfeeding, there isn't enough reliable safety data, so avoid supplement doses unless your doctor advises you otherwise.

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.

Before you start, check with your doctor or pharmacist if you take any anticonvulsant medications (seizure drugs, nerve pain relievers, or mood stabilizers that work that way). Altogether, these interactions span 50 individual 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.

Glutamine may help with sickle cell disease, and it's possibly useful for recovery after surgery or critical illness. If you take anticonvulsants (seizure or nerve medications), you'll want to clear this with your doctor or pharmacist first.

Healthy adults generally tolerate it well, but GI side effects like bloating and diarrhea are common. Talk it over with your healthcare provider before adding it to your routine.

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 Sep 22, 2016.

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 Micronized Glutamine 5.0 g, straight from the product label.

Brand BodyBuilding.com Foundation Series
Barcode (UPC) 000531
Net contents 2.2 lbs; 1000 Gram(s)
Market status On market
Date entered into DSLD Sep 22, 2016
DSLD ID 64285
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 Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series, 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
200
UPC/BARCODE
000531
IngredientAmount% DV
L-Glutamine5 Gram(s)--

Other ingredients: L-Glutamine, Micronized

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.
General Statements

This product was produced in a GMP facility. Good Manufacturing Practices, or GMPs, are a set of standards which ensure the purity and proper labeling of dietary supplements.

BBCOM531 - 070616 - V8

Foundation Series

Bodybuilding.com products have been formulated to the highest standards with high-quality, effective ingredients that produce real results. If you are not completely satisfied with any product, return it any time for a full refund.

Post Workout Support Glutamine is the most abundant amino acid in the bloodstream and one of the most abundant free amino acids in the body. During training, the body goes through a large amount of stress and fatigue which may reduce glutamine levels. Supplement with Bodybuilding.com Micronized Glutamine to support your results! For more information about this product visit Bodybuilding.com.

Packaged by weight not volume. Contents may settle during shipping.

200 Servings

Sports nutrition

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

Precautions

Allergen Information: This product is manufactured in a facility that uses materials containing milk, soy, wheat, egg, fish, and peanut.

Warnings: Do not use if pregnant, contemplating pregnancy, or nursing.

This product is only intended to be consumed by healthy adults 18 years of age or older. Before using this product, consult with your physician. Discontinue use and consult a healthcare professional if you experience any adverse reaction to this product.

Do not use if the seal is broken or missing. This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.

Suggested/Recommended/Usage/Directions

Directions: Mix 1 scoop with 4 to 6oz. of liquid and take both before and after training. For optimal results, take an additional serving prior to bed. Try adding Micronized Glutamine to your favorite protein, pre or post workout shake. Serving scoop included, but may settle to the bottom during shipping.

Storage

Store in a cool, dry place below 80(0)F.

Formula

5.0 G Micronized Glutamine

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

See for yourself

Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series label

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

Micronized Glutamine 5.0 g 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 Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series

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 container200 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

Other (inactive) ingredients: L-Glutamine, Micronized. These complete the product’s ingredient list but are not active constituents.

Interaction report

Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series Drug Interactions

Want to check YOUR meds against Micronized Glutamine 5.0 g?

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 Micronized Glutamine 5.0 g interact with 50 drugs. Click any drug to see the details.

1 of the 1 ingredient in Micronized Glutamine 5.0 g 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 Micronized Glutamine 5.0 g 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 Micronized Glutamine 5.0 g, from the product label.

BodyBuilding.com Foundation Series

Name
Bodybuilding.com
Street Address
4900 Engineers Way, Suite 107
City
N. Las Vegas
State
Nevada
ZipCode
89081
Phone Number
1-866-236-8417
Pharmacist Counseling Corner

Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series: Common Questions

Does Micronized Glutamine 5.0 g by BodyBuilding.com Foundation Series interact with any medications?
Yes. Based on its ingredients, Micronized Glutamine 5.0 g 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?
Micronized Glutamine 5.0 g 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 is glutamine, and what does it do in my body?
Glutamine is an amino acid—a building block for protein—that your body produces naturally. It supports protein synthesis and plays a role in immune function. This supplement provides 5 grams per serving of L-glutamine, the form your body uses.
Can I take this if I'm pregnant or breastfeeding?
During pregnancy, glutamine is rated likely safe. If you're breastfeeding, there isn't enough reliable safety data on supplement doses, so avoid it unless your doctor specifically recommends it. Talk with your healthcare provider about what's right for you.
What side effects should I expect?
Most people tolerate glutamine well, but GI side effects are common: bloating, gas, belching, constipation, diarrhea, nausea, stomach pain, and vomiting. Headache has also been reported. If you experience severe or persistent symptoms, reduce your dose or stop and talk with your pharmacist.
Is glutamine effective for muscle building or athletic recovery?
Our data shows glutamine is possibly effective for postoperative (after surgery) recovery and critical illness. For general athletic performance or muscle building outside those specific situations, the evidence we hold doesn't establish effectiveness.
Can I take this if I have kidney or liver disease?
If you have kidney or liver disease, use this supplement only under medical supervision. Your healthcare provider can help you decide whether it's appropriate for you and at what dose.
Does this powder contain anything other than glutamine?
The active ingredient is micronized L-glutamine (finely ground for easier mixing). There are no other active ingredients listed. If you have allergies or sensitivities, check the full product label or contact the manufacturer for details about processing.

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

Not sure if Micronized Glutamine 5.0 g is safe with your meds?

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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.

Micronized Glutamine 5.0 g label
Go deeper

The Full Monographs Behind Micronized Glutamine 5.0 g’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

Micronized Glutamine 5.0 g'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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