Follow the label here — all three softgels matter. A single softgel gives you 500mg of **Glucosamine Sulfate** and 400mg of **Chondroitin Sulfate**, which is well below the studied range for either ingredient. But at the recommended three softgels daily, you reach 1,500mg glucosamine and 1,200mg chondroitin — right at the doses used in major joint trials like GAIT and MOVES.

The glucosamine is in the sulfate form (specifically the potassium chloride salt), which carries the strongest clinical evidence for joint comfort and cartilage maintenance. **Chondroitin** is sourced from bovine cartilage, the standard source used in most research. Together, this pairing has more clinical backing than either ingredient alone.

The tradeoff is pill burden — three large softgels daily with meals. If you tend to skip doses, you'll drop below the clinical threshold quickly, since each softgels on its own delivers only about a third of the effective dose.

BioStacks
Jamieson

Glucosamine Chondroitin Extra Strength 900 mg

2 Softgels × 3/day · 60 servings

iHerbAmazon

Best for

Bone & Joint

Ingredients (2)

Glucosamine Sulfate

100%

Dose/day

1500 mg

Target

1000–1500 mg

Form

Standard

Chondroitin Sulfate

100%

Dose/day

1200 mg

Target

800–1200 mg

Form

Standard

Other Ingredients (7)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

GlycerinHumectant

Sweet-tasting liquid used in soft capsules and liquids

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in 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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