Nutrex Research Glutamine Pure, Unflavored, 2.2 lbs (1,000 g) supplement bottle
Nutrex Research

Glutamine Pure, Unflavored, 2.2 lbs (1,000 g)

What We Researched
1 active ingredient analyzed · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
64
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Glutamine 5 g *
Bioavailability Excellent

Absorption Rating

  • L-Glutamine Good
Other Ingredients Excellent

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

  • L-Glutamine 5 g Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Glutamine 5 g *

Price Comparison

iHerb $44.34
Best Price

Price History

Tracked across major retailers. Updated periodically.

$46$45$44$43$42 Mar 12 $44.00
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Nutrex Research

Founded 2002 · Oviedo, Florida, United States · 53 products · nutrex.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Claimed Source

Violation History

6 incidents
Prop 65 Lead, Cadmium2017-06-27Source
Prop 65 Lead2015-06-15Source
Fda Warning The product Adipodex was found to contain DMBA (1,3-Dimethylbutylamine), which the FDA considered a new dietary ingredient for which a New Dietary Ingredient notification was not submitted.2015-04-24Source
Fda Warning Products including Hemo Rage Black and Lipo-6 Black contained DMAA (1,3-dimethylamylamine), which the FDA deemed an adulterant.2012-04-24Source
Lawsuit A class-action lawsuit was filed against Nutrex Research for products containing the stimulant DMAA, which was alleged to be dangerous.2012Source
Lawsuit A potential class-action lawsuit claimed that Nutrex supplements advertised as 'all-natural' contained methylsynephrine, an ingredient alleged to be the prescription drug Oxilofrine.2010Source
Related Supplements
NOW Foods Eggshell Membrane, 500 mg, 60 Capsules
NOW Foods Eggshell Membrane, 500 mg, 60 Capsules
Product 100 Brand 100
NOW Foods Sports, D-Ribose Powder, 1 lb (454 g)
NOW Foods Sports, D-Ribose Powder, 1 lb (454 g)
Product 100 Brand 100
NOW Foods Sports, D-Ribose Powder, 8 oz (227 g)
NOW Foods Sports, D-Ribose Powder, 8 oz (227 g)
Product 100 Brand 100
Nutrex Research Caffeine 200, 200 mg, 60 Capsules
Nutrex Research Caffeine 200, 200 mg, 60 Capsules
Product 100 Brand 64
Nutrex Research Creatine Monohydrate, Fruit Punch, 13.76 oz (390 g)
Nutrex Research Creatine Monohydrate, Fruit Punch, 13.76 oz (390 g)
Product 100 Brand 64
Nutrex Research Creatine Monohydrate, Strawberry Watermelon, 13.76 oz (390 g)
Nutrex Research Creatine Monohydrate, Strawberry Watermelon, 13.76 oz (390 g)
Product 100 Brand 64
Frequently Asked Questions
Is Nutrex Research Glutamine Pure, Unflavored a good supplement?

Nutrex Research Glutamine Pure, Unflavored, 2.2 lbs (1,000 g) received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients The manufacturer, Nutrex Research, holds a brand trust score of 64/100 with 1 verified certifications including Consumerlab.

What are the ingredients in Nutrex Research Glutamine Pure, Unflavored?

Nutrex Research Glutamine Pure, Unflavored contains 1 active ingredients: L-Glutamine (5 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nutrex Research Glutamine Pure, Unflavored safe to take?

Nutrex Research Glutamine Pure, Unflavored, 2.2 lbs (1,000 g) has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Nutrex Research a trustworthy supplement brand?

Nutrex Research receives a brand trust score of 64/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2002 and headquartered in Oviedo, Florida, United States, the company offers 53 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nutrex Research has 6 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

Download on App Store Browse All Supplements
Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.