BioStacks
21st Century

D3 250 mcg (10000 IU)

1 Tablet · 110 servings · $0.10/serving

iHerbAmazon

Best for

ImmuneDentalBone & Joint

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

Track this supplement in your stack

Get personalized insights, interactions, and coverage recommendations.

Get Started Free

Similar Supplements

Products that cover similar health dimensions based on their ingredients.

Calcium Citrate 1000 mg D-3 25 mcg

KAL

Calcium Citrate 1000 mg D-3 25 mcg

🦷 for Dental

97
Calcium Citrate & Vitamin D3

Swanson

Calcium Citrate & Vitamin D3

🦷 for Dental

97
Calcium Citrate + Vitamin D3

Horbäach

Calcium Citrate + Vitamin D3

🦷 for Dental

97
Vitamin D3 50 mcg (2000 IU)

21st Century

Vitamin D3 50 mcg (2000 IU)

🛡️ for Immune

93
D3 25 mcg (1000 IU)

21st Century

D3 25 mcg (1000 IU)

🛡️ for Immune

90

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.

BioStacks

Know exactly what's in your supplements.

Navigate

  • Home
  • App Store
  • Google Play

Resources

  • Contact & Support
  • Terms of Service
  • Privacy Policy

Explore

  • Health Areas
  • Best Supplements
  • Nutrients
  • All Supplements

Popular Picks

  • Best Magnesium for Sleep
  • Best Collagen for Skin
  • Best Creatine for Muscle
  • Best Vitamin D for Bone Health
  • Best Probiotics for Digestion
  • Best CoQ10 for Heart
© 2026 BioStacks. All rights reserved. Not medical advice.