BioStacks
Purity Products

G.C. Flex

3 Capsules · 30 servings · $1.33/serving

iHerbAmazon

Best for

Bone & Joint

Ingredients (3)

Glucosamine HCl

100%

Dose

1500 mg

Target

1000–1500 mg

Form

—

5-Loxin (Boswellia serrata) extract

100%

Dose

100 mg

Target

100–250 mg

Form

Premium

Chondroitin Sulfate

100%

Dose

1200 mg

Target

800–1200 mg

Form

Standard

Nutrition

Calories, macros & sodium.

  • Sodium93 mg

Other Ingredients (2)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

How to Take It

Take it anytime

Take with food to avoid stomach upset. Benefits, where they exist, take weeks of daily use to appear.

With food

On the label

As a dietary supplement, take 3 capsules daily with a meal or take as directed by your health care professional.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$39.95

$20$50

Pricier than 85% of 94 glucosamine sulfate supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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