BioStacks
Kirkland Signature

Extra Strength Glucosamine HCl 1500mg with MSM 1500mg

2 Tablets · 187 servings · $0.11/serving

68 / 100Good

Best for

Score Breakdown

Formulation
78
Safety
87
Final score
68/100

Ingredients (2)

Methyl Sulfonyl Methane

100%

Dose

1500 mg

Target

1000–3000 mg

Form

Glucosamine Hydrochloride

100%

Dose

1500 mg

Target

1000–1500 mg

Form

Premium

Other Ingredients (7)

MaltodextrinBinder

Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.

Magnesium StearateLubricant

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

Medium Chain Triglyceride OilCarrier

Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent

Microcrystalline CelluloseBinder

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

HypromelloseCapsule

Plant-derived capsule material from cellulose

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

Silicone Dioxide

Not reviewed yet

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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.