BioStacks
21st Century

D3 250 mcg (10000 IU)

1 Tablet · 110 servings · $0.10/serving

57 / 100Average

Score Breakdown

Formulation
100
Safety
57
Final score
57/100

Ingredients (2)

Vitamin D3

100%

Dose

10000 IU

Target

1000–5000 IU

Form

Premium

Calcium

57 mg

Trace amount — not scored

Other Ingredients (9)

SucroseSweetener

Added sugars and high glycemic load; dental caries risk

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

Microcrystalline CelluloseBinder

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

Croscarmellose SodiumDisintegrant

Cross-linked cellulose derivative used as a superdisintegrant

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Gum AcaciaBinder

Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements

StarchBinder

Carbohydrate polymer used as a binder, filler, and disintegrant in tablets and capsules

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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.