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.

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BioStacks

Jamieson

Glucosamine Chondroitin Extra Strength 900 mg

Softgel · 60 servings

9 / 100Very Poor

Score Breakdown

Formulation
9
Safety
100
Final score
9/100

Ingredients (2)

Glucosamine Sulfate500 mg

50% of effective dose

Chondroitin Sulfate400 mg

50% of effective dose

Label Nutrition Facts

Active Ingredients

From the label · % Daily Value

DV%

Glucosamine Sulfate500 mg

Chondroitin Sulfate400 mg

Other Ingredients

Fillers, coatings, and additives

7Safe

Silicon DioxideAnti-caking

Safe

Silicon DioxideAnti-caking

Safe

Microcrystalline CelluloseBinder

Safe

Microcrystalline CelluloseBinder

Safe

GlycerinHumectant

Safe

Stearic AcidLubricant

Safe

Microcrystalline CelluloseBinder

Safe

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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.