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

L-Glutamine 1000 mg Ingredients & Drug Interactions

by Logos Nutritionals

Tablet Or Pill Category: Amino Acid/protein
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

L-Glutamine 1000 mg is a dietary supplement by Logos Nutritionals 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.

HelloPharmacist Scorecard of L-Glutamine 1000 mg by Logos Nutritionals

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

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 at 1,000 mg per tablet. L-Glutamine is an amino acid — one of the building blocks your body uses to make proteins and perform various functions.

The tablet also includes inactive ingredients (binders and fillers): dicalcium phosphate, stearic acid, croscarmellose sodium, magnesium stearate, pharmaceutical glaze, and silicon dioxide.

Does it work?

Strong 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

This product doesn't appear to be marketed for a specific use, so we graded Glutamine's overall clinical evidence instead.

Strong

Strong clinical evidence supports Glutamine for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Sickle cell disease — rated "Effective" (Natural Medicines).
  • On file: HIV/AIDS-related wasting — rated "Possibly Effective" (Natural Medicines).
  • On file: Critical illness (trauma) — rated "Possibly Effective" (Natural Medicines).
  • On file: Postoperative recovery — rated "Possibly Effective" (Natural Medicines).
  • On file: Pancreatitis — rated "Possibly Effective" (Natural Medicines).

L-Glutamine is effective for sickle cell disease. It's possibly effective for HIV/AIDS-related wasting, postoperative recovery, and critical illness from trauma.

The evidence for these other uses is less established, so talk with your doctor about whether it fits your 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.

L-Glutamine is generally well tolerated by healthy adults. Common side effects include belching, bloating, constipation, diarrhea, flatulence, stomach pain, nausea, vomiting, headache, cough, and muscle pain.

In clinical trials using higher doses (10–30 grams daily), GI symptoms were more frequent. Two patients with bipolar disorder reported mania or hypomania when taking up to 4 grams daily, though this is rare.

If you have kidney or liver disease, use this supplement only under a doctor's supervision. There isn't enough safety data to recommend it during pregnancy without medical advice, and you should avoid supplement doses while breastfeeding unless your doctor or pharmacist recommends 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 anticonvulsant medications (seizure drugs), double-check this product with your pharmacist before starting — L-Glutamine may theoretically reduce how well they work, though this hasn't been reported in patients yet.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

L-Glutamine works for sickle cell disease and may help with wasting from HIV/AIDS, recovery after surgery, or critical illness. If you take anticonvulsant medication, check with your pharmacist first.

If you have kidney or liver problems, talk to your doctor before starting. Most people tolerate it well, but GI side effects are common 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 Aug 22, 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 L-Glutamine 1000 mg, straight from the product label.

Brand Logos Nutritionals
Barcode (UPC) 850045673048
Net contents 100 Tablet(s)
Market status On market
Date entered into DSLD Aug 22, 2025
DSLD ID 335715
Product type Amino Acid/protein
Supplement form Tablet Or Pill
Dietary claims / uses 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 L-Glutamine 1000 mg by Logos Nutritionals, 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 Tablet(s)
Maximum serving Sizes:
1 Tablet(s)
Servings per container
100
UPC/BARCODE
850045673048
IngredientAmount% DV
L-Glutamine1000 mg--

Other ingredients: Dicalcium Phosphate, Stearic Acid, Croscarmellose Sodium, Magnesium Stearate, Pharmaceutical Glaze, Silicon Dioxide

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.
Suggested/Recommended/Usage/Directions

Suggested use: Take 1 tablet 1 to 3 times daily, between meals or as directed by a healthcare professional.

Precautions

Caution: Do not exceed recommended dose.

This product is not intended for pregnant or nursing mothers or children under the age of 18.

This product is not intended for pregnant or nursing mothers or children under the age of 18.

If you have a known medical condition and have questions about the advisability of taking this product, consult your physician prior to use.

This product is manufactured and packaged in a facility which may also process milk, soy, wheat, egg, peanuts, tree nuts, fish and crustacean shellfish.

Keep out of the reach of children.

Do not use if safety seal is damaged or missing.

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.

Formulation

We back our products with an Unconditional Satisfaction Guarantee!

Non-GMO

General Statements

Questions or Comments - Call 800-556-5530 Or visit our Website: www.logosnutritionals.com

Brand IP Statement(s)

Copyright 2022 LOGOS

Seals/Symbols

Sourced from a GMP Certified Facility Good Manufacturing Practice Quality Assured Lab Verified 3rd Party Tested Purity-Potency- Renew your health, naturally

FDA Statement of Identity

Dietary Supplement

Storage

Store in a cool, dry place.

See for yourself

L-Glutamine 1000 mg by Logos Nutritionals label

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

What’s inside

The Ingredients in L-Glutamine 1000 mg by Logos Nutritionals

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

Serving size1 Tablet(s) Dosage formTablet Or Pill Servings per container100 Amounts shown are per serving.

L-Glutamine

Interacts with
50 drugs
1000 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...

L-Glutamine monograph & interactions

Other (inactive) ingredients: Dicalcium Phosphate, Stearic Acid, Croscarmellose Sodium, Magnesium Stearate, Pharmaceutical Glaze, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

L-Glutamine 1000 mg by Logos Nutritionals Drug Interactions

Want to check YOUR meds against L-Glutamine 1000 mg?

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

Each ingredient & the kinds of drugs it affects

For each ingredient in L-Glutamine 1000 mg 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
The maker

Brand information

Manufacturer and brand details for L-Glutamine 1000 mg, from the product label.

Logos Nutritionals

See all Logos Nutritionals products
Name
Logos Nutritionals, LLC.
Street Address
912 Killian Hill Road SW, Ste. 202-O
City
Lilburn
State
GA
ZipCode
30047
Phone Number
800-556-5530
Web Address
www.logosnutritionals.com
Pharmacist Counseling Corner

L-Glutamine 1000 mg by Logos Nutritionals: Common Questions

Does L-Glutamine 1000 mg by Logos Nutritionals interact with any medications?
Yes. Based on its ingredients, L-Glutamine 1000 mg 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?
L-Glutamine 1000 mg 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 do?
L-Glutamine is an amino acid your body needs to build proteins and support various functions. It's proven effective for sickle cell disease and may help with HIV/AIDS-related wasting, recovery after surgery, and critical illness from trauma.
What side effects should I expect?
Most people experience mild digestive symptoms — belching, bloating, constipation, diarrhea, stomach pain, or nausea. These are common, especially at higher doses. If you notice dizziness or headache, tell your pharmacist or doctor.
Can I take this if I'm pregnant or breastfeeding?
There isn't enough reliable data to say either way during pregnancy — talk with your doctor for personalized advice. While breastfeeding, avoid supplement doses unless your clinician recommends it.
I have liver or kidney disease. Is this safe for me?
Not without medical supervision. If you have kidney or liver problems, talk with your doctor before starting L-Glutamine.
How much should I take?
This product provides 1,000 mg per tablet. Clinical trials have used doses ranging from a few grams to 10–30 grams daily for specific conditions. Your doctor or pharmacist can advise the right dose for you.

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

Not sure if L-Glutamine 1000 mg 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.

L-Glutamine 1000 mg label
Go deeper

The Full Monographs Behind L-Glutamine 1000 mg’s Ingredients

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

Sources

Sources & How We Checked

L-Glutamine 1000 mg'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