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Dietary supplement

Magnum G Ingredients & Drug Interactions

by Magnum Nutraceuticals

Magnum 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 Magnum 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

Magnum G is a dietary supplement by Magnum Nutraceuticals 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 Magnum G by Magnum Nutraceuticals

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

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HelloPharmacist Scorecard of Magnum G by Magnum Nutraceuticals

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.

Magnum G contains one active ingredient: L-glutamine, an amino acid your body uses during recovery from illness, injury, or intense physical stress. It plays a role in gut health, immune function, and protein synthesis.

This product is a powder form, with no inactive fillers listed.

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 sports performance.
  • We looked for evidence on: Athletic performance, Exercise-induced muscle damage, 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.

L-glutamine shows solid evidence for sickle cell disease. For HIV/AIDS-related wasting, postoperative recovery, and critical illness from trauma, the evidence is less established — the data rates these uses as possibly effective, meaning the research is promising but not yet conclusive.

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, constipation, diarrhea, flatulence, nausea, and vomiting — especially at higher doses (10–30 grams daily).

A few cases of dizziness and headache have been reported, and in two people with bipolar disorder, mania-like symptoms appeared at 4 grams daily, though this is rare. If you have kidney or liver disease, use this supplement only under your doctor's supervision.

There isn't enough safety data in pregnancy, so talk with your doctor before taking it during pregnancy. For breastfeeding, safety data is limited — check with your healthcare provider before supplementing.

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.

Check before combining this product with anticonvulsant medications (seizure drugs). Glutamine may theoretically interfere with how these medications work, though no cases in patients have been reported yet.

Run your exact seizure medication through the search tool on this page to be sure.

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.

Magnum G is a single-ingredient glutamine powder that works well for sickle cell disease and may help with recovery from surgery or critical illness, though evidence for those uses is still building. If you take any seizure medication, clear it with your doctor or pharmacist first.

It's worth checking your full medication list against the tool on this page before starting.

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 Jun 16, 2022.

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 Magnum G, straight from the product label.

Brand Magnum Nutraceuticals
Barcode (UPC) 689076062251
Net contents 500 Gram(s); 17.6 Ounce(s)
Market status On market
Date entered into DSLD Jun 16, 2022
DSLD ID 263135
Product type Amino Acid/protein
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating)
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 Magnum G by Magnum Nutraceuticals, 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
689076062251
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.
Formula

Fermented L-glutamine

Formulation

Pharmaceutical grade

Made in Canada

Magnum stacks The Magnum Research & Development Team has created products that work synergistically to enhance results. Magnum G is best stacked with: Tonic Primer Hi-5 G-Spring Quattro

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Recommended dose: For adults. Take 1 serving (5g) mixed with the beverage of your choice, twice daily (2 servings total). The most effective dosing times are post-workout and before bed.

General Statements

Magnum Nutraceuticals is dedicated to integrity in producing the highest quality sports nutrition supplements. Magnum commissions only CGMP (Certified Good Manufacturing Practices), Site Licensed (Pharmaceutical) Manufacturing Facilities to produce our highly advanced, quality formulas. These facilities are government audited for quality assurance and label claims. Because of this, our customers can be sure that every ingredient used is pharmaceutical grade and that our formulas will be far more effective in a much shorter period of time. Magnum goes this extra distance to provide the absolute highest quality ingredients possible for every formula and to instill confidence in our clients that Magnum is the brand to trust. SL site licensed

Seals/Symbols

Certified cGMP Good Manufacturing Practices

Brand IP Statement(s)

Better Ingredients, better results.

Precautions

Warning: Do not use if you are under 16 years of age, pregnant or nursing.

Warning: Do not use if you are under 16 years of age, pregnant or nursing. Consult your physician before use if you have a medical condition or are taking prescription drugs.

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.

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

See for yourself

Magnum G by Magnum Nutraceuticals label

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

Magnum 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 Magnum G by Magnum Nutraceuticals

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

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

Magnum G by Magnum Nutraceuticals Drug Interactions

Want to check YOUR meds against Magnum 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 Magnum G interact with 50 drugs. Click any drug to see the details.

1 of the 1 ingredient in Magnum 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 Magnum 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 Magnum G, from the product label.

Magnum Nutraceuticals

See all Magnum Nutraceuticals products
Name
Magnum Nutraceuticals Inc.
Street Address
19278 25th Avenue
City
Surrey
State
BC
ZipCode
V3Z 3X1
Phone Number
1.888.662.4686
Pharmacist Counseling Corner

Magnum G by Magnum Nutraceuticals: Common Questions

Does Magnum G by Magnum Nutraceuticals interact with any medications?
Yes. Based on its ingredients, Magnum 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?
Magnum 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 does L-glutamine actually do?
L-glutamine is an amino acid your body relies on for gut health, immune function, and protein building — especially during recovery from surgery, illness, or intense physical stress. It shows real effectiveness for sickle cell disease and may help with recovery from major injury or surgery, though more research is needed for those uses.
What are the most common side effects?
Digestive upset is the main concern: bloating, gas, nausea, constipation, and diarrhea, particularly at higher doses. Headache and dizziness have been reported less often. Most people tolerate it well, but if you notice GI symptoms, you can try lowering your dose.
Is it safe during pregnancy or while breastfeeding?
The data rates L-glutamine as likely safe in pregnancy, but there isn't enough reliable safety information for breastfeeding — talk with your doctor or pharmacist about whether supplemental doses make sense for you right now.
Can I take this if I have kidney or liver problems?
Not without medical supervision. If you have kidney or liver disease, check with your doctor before using this supplement; it needs to be managed carefully in those situations.
Is there really a seizure medication interaction?
L-glutamine breaks down into glutamate, which theoretically could interfere with how anticonvulsant (seizure) drugs work. It hasn't been reported in actual patients yet, but the concern is real enough that you need to clear it with your doctor or pharmacist if you're on seizure medication.

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

Not sure if Magnum 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.

Magnum G label
Go deeper

The Full Monographs Behind Magnum 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

Magnum 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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