BioStacks
Best for
Ingredients (5)
Glucosamine HCl
100%Dose
1500 mg
Target
1000–1500 mg
Form
—
Boron
100%Dose
3 mg
Target
3–6 mg
Form
—
Chondroitin Sulfate
100%Dose
1200 mg
Target
800–1200 mg
Form
Standard
Manganese
100%Dose
2 mg
Target
1.8–5 mg
Form
Budget
Vitamin C
24%Dose
60 mg
Target
250–2000 mg
Form
Budget
Other Ingredients (8)
Titanium DioxideColorant
Banned in the EU (2022) over concerns that its ultra-fine particles may damage DNA in gut cells. Still allowed in the US. Used only for white coloring — provides no health benefit.
PolydextroseFiller
A synthetic soluble fiber/bulking agent made from glucose
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
CrospovidoneDisintegrant
Cross-linked synthetic polymer used as a tablet disintegrant to help tablets break apart quickly in the stomach
TriacetinPlasticizer
Glycerol triacetate used as a plasticizer in film coats and a flavor carrier
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
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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.