BioStacks
Best for
Ingredients (31)
Vitamin D
100%Dose
2000 IU
Target
1000–5000 IU
Form
Premium
Vitamin B6
100%Dose
75 mg
Target
1.3–25 mg
Form
Premium
Manganese
100%Dose
4 mg
Target
1.8–5 mg
Form
Standard
Niacin
100%Dose
50 mg
Target
25–500 mg
Form
Standard
Selenium
100%Dose
100 mcg
Target
100–200 mcg
Form
Premium
Other Ingredients (9)
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.
Polyethylene Glycol (Coating)Coating
A polyether polymer used as a tablet coating and plasticizer
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Croscarmellose SodiumDisintegrant
Cross-linked cellulose derivative used as a superdisintegrant
Hydroxypropyl CelluloseBinder
An inert modified-cellulose polymer used as a binder, film-former, and disintegrant.
HypromelloseCapsule
Plant-derived capsule material from cellulose
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.