Pure L-Glutamine Powder®
Amino Acids & ProteinBrand: Doctor's Best
Functions
Net Contents
10.6 Ounce(s)
Serving Size
5 Gram(s)
Servings Per Container
60
Supplement Form
Powder
Bar Code (UPC/SKU)
7 53950 00491 7
Product Version
YDRB491-1
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
Label states: Vegan, Vegetarian, Non-GMO, Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Free From
- Soy
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 5 Gram(s) · 1– per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| L-Glutamine | 5 Gram(s) | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Suggested Adult Use: Add 1 scoop to 8 ounces of juice or protein shake and mix well. For best results, drink 1 hour before exercise. Repeat after exercise or before bedtime, or as recommended by a nutritionally informed physician.
Suggested/Recommended/Usage/Directions
It is recommended to supplement with B vitamins if taking L-glutamine long term.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Warning: Avoid using if you are pregnant, nursing or if you have liver problems.
Precautions re: All Other
If you are sensitive to monosodium glutamate (MSG), you may be sensitive to glutamine as the body converts glutamine to glutamate.
Storage
Storage
Store in a cool dry place.
Formulation
Formula re: Contains
Doctor's Best L-Glutamine Powder contains Glutamine, an amino acid that is a building block of protein. Glutamine is most commonly used to support muscle growth, skeletal muscles and athletic endurance. Supplementing with L-Glutamine allows the body the much-needed amino acids to increase muscle hydration.
Formulation re: Other
This is an essential process in the body that supports muscle recovery from high intensity workouts. Helps support muscle mass and strength Helps support muscle hydration Helps support post-workout recovery
Formulation re: Other
Helps support muscle mass, strength, and post-workout recovery
Formulation re: Vegetarian/Vegan
Vegan
Formulation re: Does NOT Contain
Non-GMO Gluten free Soy free
Formulation re: Vegetarian/Vegan
Vegan
FDA Statements
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
Other Label Statements
Brand IP Statement(s) re: (c), (TM), (SM)
Doctor's Best Science-Based Nutrition
General Statements: All Other Content
Note: Settling of contents may occur, which may cause slight variations in number of servings.
Manufacturer & Distributor
Distributor
Doctor's Best, Inc.
Tustin, California, 92780, USA
(800) 777-2474
Market Reference
Doctor's Best Pure L-Glutamine Powder
iHerb4.8(2300)$18.99LowestPure Encapsulations L-Glutamine Powder
Target4.7(154)$55.00L-Glutamine Powder
SeeBeyond$55.00L-Glutamine
PureBulk4.8(35)$64.95L-Glutamine - Pure Powder
Fact vs Fitness$39.00L-glutamine
3H Biomedical$213.83Leaky Gut Defense Digestive Support Powder
Pure TheraPro Rx4.3(129)$38.97Glutamine 100% PURE Micronized Free Form
labnutrition$29.00
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
Holland & Barrett - Hitchin
4.3 (18)Vitamin & Supplements Shop
116 Bancroft, Hitchin SG5 1LS
Health Emporium Ltd
4.3 (77)Health food shop
16a High St, Hitchin SG5 1AT
Nutrifize
Vitamin & Supplements Shop
3 Clare Gardens, Hitchin SG4 9SQ
Nutrition Chemist
5.0 (1)Vitamin & Supplements Shop
Nutrition Chemist, Caxton Point, Caxton Way, Stevenage SG1 2XU
Pure Spirit CBD Essentials
Vitamin & Supplements Shop
28a Bancroft, Hitchin SG5 1LA
Gorilla Supplements Ltd
5.0 (49)Vitamin & Supplements Shop
Cheshunt Centre, 58 High St Unit 4 The, Cheshunt, Waltham Cross EN8 0AQ
Holland & Barrett - Letchworth
4.5 (10)Vitamin & Supplements Shop
11 Leys Ave, Letchworth Garden City SG6 3EA
Holland & Barrett
4.6 (16)Vitamin & Supplements Shop
Unit 44 Queensway, Stevenage SG1 1EE
Research & Studies
Gastrointestinal Tolerance of Low, Medium and High Dose Acute Oral l-Glutamine Supplementation in Healthy Adults: A Pilot Study
HB Ogden, RB Child, JL Fallowfield, SK Delves… - Nutrients, 2020 - mdpi.com
… l-Glutamine (GLN) is a conditionally essential amino acid which supports gastrointestinal (GI) and immune function prior to catabolic stress (eg, strenuous exercise). Despite potential …
202013 citationsClinical Applications of l‐Glutamine: Past, Present, and Future
PE Wischmeyer - Nutrition in clinical Practice, 2003 - Wiley Online Library
… been considered a nonessential amino acid in healthy individuals, is now known to be “… indicating that human leukocyte antigen-DR receptor expression on monocytes was significantly …
2003127 citationsTHE BENEFITS OF L-GLUTAMINE SUPPLEMENTATION IN ATHLETES.
A Todero - Journal of Australian Strength & Conditioning, 2014 - search.ebscohost.com
… precursor supplements. Although glutamine supplementation raises few health concerns, it … supplementation. An extended ninety day administration saw total cholesterol levels of its …
20142 citationsL‐Glutamine Supplementation Improves the Benefits of Combined‐Exercise Training on Oral Redox Balance and Inflammatory Status in Elderly Individuals
EB Almeida, JMB Santos, V Paixão… - Oxidative Medicine …, 2020 - Wiley Online Library
… time, that the daily supplementation with L-glutamine for 30 days improved the benefits provided by the exercise program on these remarkable parameters associated to healthy aging. …
202049 citationsL-Glutamic acid and glutamine: Exciting molecules of clinical interest
C Kulkarni, K Kulkarni, B Hamsa - Indian journal of pharmacology, 2005 - go.gale.com
… supplementing glutathione and other amino acids have been proposed to be useful in maintaining the integrity of immune system and normal health… L-Glutamine as precursor of GABA …
200563 citationsL-Glutamine supplementation: effects on endurance, power and recovery.
T Piattoly, TR Parish… - Current topics in …, 2013 - search.ebscohost.com
… ABSTRACT: The purpose was to examine the influence of L-Glutamine on endurance and … Subjects were then randomized to either L-glutamine (GLU) or placebo (CON) for 6 days. …
201311 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2023-12-14. DSLD Label ID: 302703. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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