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G.C. Flex

product on market Capsule Purity Products Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 75% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Glucosamine and chondroitin sulfate are commonly used to support joint health, though research shows moderate to mixed results regarding efficacy. Boswellia serrata extract has demonstrated potential in reducing joint inflammation. Overall, clinical evidence for these combined ingredients is limited.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for G.C. Flex
Open Full PDF View on NIH DSLD →
Details

Label Data

3 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
75%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Sodium
84 mg (4% DV)
Market median: 600.0mg (79 products) 25 studies (A:0, B:6)
1500 mg
Market median: 1000.0mg (1115 products) 24 studies (A:0, B:9)
Market median: 375.0mg (171 products) 31 studies (A:1, B:14)

Other Ingredients

Gelatin Vegetable Magnesium Stearate
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, take 3 capsules daily with a meal or take as directed by your health care professional. Optimally, for the first 15 days, double the dose for maximum benefits. Best results are obtained with daily use.

Warnings & Precautions

Contains crustacean shellfish (Shrimp, crab, lobster).

Formulation Notes

Glucosamine & chondroitin 5-Loxin joint formula

Supports healthy joints and cartilage Supports joint flexibility Supports healthy muscles and connective tissues

Additional Information

Intelligent nutritional solutions

Premium grade supplements Since 1993

Metadata

Product Details

DSLD Entry Date2021-01-22
Product TypeOther Combinations
FormCapsule
BrandPurity Products
DSLD ID243751
Data Updated2026-04-11
Research

Research Evidence

33
Research Sources
48
Avg Quality
21
Rct
10
Meta Analysis
2
Clinical Trial
B Chondroitin for osteoarthritis
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
B Efficacy and safety of the combination of glucosamine and chondroitin for knee osteoarthritis: a systematic review and meta-analysis
Meta Analysis Archives of orthopaedic and trauma surgery 2023 PubMed DOI
B Glucosamine, chondroitin sulfate, and the two in combination for painful knee osteoarthritis
Rct The New England journal of medicine 2006 PubMed
B Clinical Efficacy and Safety of Chondroitin Combined with Glucosamine in the Treatment of Knee Osteoarthritis: A Systematic Review and Meta-Analysis
Meta Analysis Computational and mathematical methods in medicine 2022 PubMed DOI
B Combined chondroitin sulfate and glucosamine for painful knee osteoarthritis: a multicentre, randomised, double-blind, non-inferiority trial versus celecoxib
Rct Annals of the rheumatic diseases 2016 PubMed DOI
B Effectiveness and safety of glucosamine and chondroitin for the treatment of osteoarthritis: a meta-analysis of randomized controlled trials
Meta Analysis Journal of orthopaedic surgery and research 2018 PubMed DOI
C Update on the role of pharmaceutical-grade chondroitin sulfate in the symptomatic management of knee osteoarthritis
Meta Analysis Aging clinical and experimental research 2019 PubMed DOI
C Evaluation of efficacy and safety of glucosamine sulfate, chondroitin sulfate, and their combination regimen in the management of knee osteoarthritis: a systematic review and meta-analysis
Meta Analysis Inflammopharmacology 2024 PubMed DOI
C Does incorporating collagen and chondroitin sulfate matrix in implant surfaces enhance osseointegration? A systematic review and meta-analysis
Meta Analysis International journal of oral and maxillofacial surgery 2018 PubMed DOI
C Effect of glucosamine and chondroitin sulfate in symptomatic knee osteoarthritis: a systematic review and meta-analysis of randomized placebo-controlled trials
Meta Analysis Rheumatology international 2018 PubMed DOI
View all evidence for Chondroitin →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.