BioStacks
Xendurance

Joint-4

3 Capsules · 90 servings · $0.44/serving

iHerbAmazon

Best for

Bone & Joint

Ingredients (4)

Glucosamine HCl

75%

Dose

750 mg

Target

1000–1500 mg

Form

—

Methylsulfonylmethane

75%

Dose

750 mg

Target

1000–3000 mg

Form

—

Boswellia serrata extract

100%

Dose

300 mg

Target

300–1200 mg

Form

Budget

Chondroitin Sulfate

75%

Dose

600 mg

Target

800–1200 mg

Form

Standard

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

For the first 30 days, take 3 capsules twice daily; 3 in the morning and 3 in the evening. (2 pouches)After the first 30 days take 3 capsules daily with either your morning or evening meal. If discomfort returns, resume 6 capsules per day.

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

Price Check

$39.95

$10$20$50

Pricier than 83% of 66 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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