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Dietary supplement

Glutamine Unflavored Powder Ingredients & Drug Interactions

by FINAFLEX

Glutamine Unflavored Powder 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 Glutamine Unflavored 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 Unflavored Powder is a dietary supplement by FINAFLEX 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.

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Check Your Meds Against Glutamine Unflavored Powder by FINAFLEX

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

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HelloPharmacist Scorecard of Glutamine Unflavored Powder by FINAFLEX

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 Jul 11, 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.

FINAFLEX Glutamine Unflavored Powder contains one active ingredient: L-glutamine powder. Glutamine is an amino acid — one of the building blocks your body uses to make protein.

Your body naturally produces glutamine, but during intense physical stress, illness, or recovery from surgery, your cells may use it faster than you can make it.

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 reduce breakdown.
  • We looked for evidence on: Athletic performance, Exercise-induced muscle damage, Postoperative recovery, Wound healing, Critical illness (trauma), Burns — and 4 related terms.
  • The strongest evidence on file: Glutamine is rated "Possibly Effective" for HIV/AIDS-related wasting (Natural Medicines).
  • Also on file: Glutamine is rated "Possibly Effective" for Critical illness (trauma), Postoperative recovery.
  • Also on file: Glutamine is rated "Possibly Ineffective" for Athletic performance, Burns, Muscular dystrophy.

The evidence for glutamine varies by use. It's rated Effective for sickle cell disease.

For HIV/AIDS-related wasting (weight loss from the disease), postoperative recovery (healing after surgery), and critical illness from trauma, the evidence is Possibly Effective — meaning studies suggest 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.

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

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

In rare cases, people with bipolar disorder taking high doses (4 grams daily) have reported mania or hypomania — talk to your doctor if that applies to you. During pregnancy, glutamine is rated Likely Safe.

However, there isn't enough reliable safety data for supplemental doses while breastfeeding, so check with your clinician before using it.

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 anticonvulsants (seizure medications), double-check with your pharmacist or doctor before starting this product — glutamine may theoretically reduce their effectiveness, though this hasn't been seen in patients yet. Use the medication checker below to verify your exact drugs.

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 or recovery from surgery or critical illness, though evidence for some uses is still developing. If you take seizure medication, check your specific drugs with our tool before starting.

Stick with your doctor's guidance if you have kidney or liver disease, bipolar disorder, or are breastfeeding.

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 25, 2025.

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 Unflavored Powder, straight from the product label.

Brand FINAFLEX
Barcode (UPC) 854397007933
Net contents 2.2 Pound(s); 1 kg
Market status On market
Date entered into DSLD Sep 25, 2025
DSLD ID 333674
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 Glutamine Unflavored Powder by FINAFLEX, 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
854397007933
IngredientAmount% DV
L-Glutamine, Powder5 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.
Formulation

Take it to the Next Level Reduce Muscle breakdown Support Nitrogen levels Promote Recovery FINAFLEX GLUTAMINE is a Premium Muscular Recovery Product designed to promote muscle recovery, support a positive nitrogen balance in muscles, and prevent muscle breakdown!

Formula

Premium Micronized L-Glutamine Powder Built with and powered by Micronized L-Glutamine, FINAFLEX GLUTAMINE helps you reach your health and fitness goals! Redefine Yourself with Glutamine

Premium Micronized L-Glutamine Unflavored Powder

Brand IP Statement(s)

FINAFLEX #Redefine Yourself

General Statements

Find us online: Instagram Facebook TikTok YouTube www.FINAFLEX.com

Join the FINAFLEX Family

FDA Statement of Identity

Dietary Supplement

Precautions

Allergen Warning: Produced in a facility that processes milk, eggs, soybeans, wheat, shellfish, fish oil, tree nuts, sesame, and peanuts.

Warning: Keep out of reach of children. Intended for healthy adults over 18.

Do not use if pregnant or nursing. Consult a doctor or medical authority before use if you have a medical condition, a family history of health problems, or if you take other medicines or supplements

Do not exceed serving size. Stop use if you have a bad reaction. Stop use after 8 weeks. Stop use 2 weeks before surgery. Consumer accepts all liability if used inconsistent with label. Do not discard desiccant

California Prop 65 Warning: Lead - Cancer and Reproductive Harm www.P65Warnings.ca.gov

Seals/Symbols

GMP Certified Certified Good Manufacturing Practice U.S.A. Made Domestic & Imported Material FDA Registered Facility

Suggested/Recommended/Usage/Directions

Suggested use: Mix 1 serving (1 scoop) of FINAFLEX Glutamine with 6-12 fl oz of water or your favorite beverage. Take FINAFLEX Glutamine daily to promote muscle recovery and a positive nitrogen balance in your muscles.

Storage

Sold by weight, not volume. Store under cool, dry conditions, ideally 50-80 degrees F.

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

Glutamine Unflavored Powder by FINAFLEX label

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

Glutamine Unflavored 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 Unflavored Powder by FINAFLEX

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, Powder

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, Powder monograph & interactions
Interaction report

Glutamine Unflavored Powder by FINAFLEX Drug Interactions

Want to check YOUR meds against Glutamine Unflavored 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, Powder 50

Individual Drug Interactions

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

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

Each ingredient & the kinds of drugs it affects

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

Brand information

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

FINAFLEX

See all FINAFLEX products
Name
FINAFLEX
Street Address
3615 Francis Cir Ste 100
City
Alpharetta
State
GA
ZipCode
30004
Phone Number
888.678.7629
Web Address
FINAFLEX.com
Pharmacist Counseling Corner

Glutamine Unflavored Powder by FINAFLEX: Common Questions

Does Glutamine Unflavored Powder by FINAFLEX interact with any medications?
Yes. Based on its ingredients, Glutamine Unflavored 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 Unflavored 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.
Is glutamine safe during pregnancy?
Yes — glutamine is rated Likely Safe in pregnancy. However, there isn't enough data on supplemental doses during breastfeeding, so talk with your doctor or pharmacist for personalized advice if you're nursing.
What are the most common side effects?
Stomach issues are most common: bloating, gas, diarrhea, nausea, and constipation. Headache and muscle pain have also been reported. These are usually mild, especially at lower doses.
Does this product have any fillers or inactive ingredients?
No — this is pure L-glutamine powder with no inactive ingredients listed.
Can glutamine help with muscle recovery after a workout?
The data we have on file covers recovery from surgery and critical illness, and sickle cell disease — not routine post-workout recovery. Talk to your doctor about whether it's right for your fitness goals.
Why can't I take this while breastfeeding without checking with a doctor first?
There simply isn't enough safety research on supplemental glutamine during breastfeeding to know if it's okay. Your doctor can review your situation and give you personalized advice.

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

Not sure if Glutamine Unflavored 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 Unflavored Powder label
Go deeper

The Full Monographs Behind Glutamine Unflavored 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 Unflavored 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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