This **Vitamin D3** delivers 4,000 IU per soft gel — a correction-level dose aimed at raising low blood levels, not everyday maintenance. That puts it right at the 4,000 IU safe upper limit, so it's well-suited if you're deficient or get little sun, but more than most people need for routine upkeep, where 1,000–2,000 IU is plenty.

It's the cholecalciferol (D3) form, which raises and holds blood levels better than D2, and since vitamin D is fat-soluble, taking it with a meal — as the label directs — helps absorption. D3 supports bone strength, immune function, and dental health. At 4,000 IU, it's worth getting your blood levels checked periodically rather than dosing high indefinitely.

BioStacks
Carlson

Vitamin D3, 100 mcg (4,000 IU), 120 Soft Gels

Capsule · 1 Softgel

iHerbAmazon
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What it does

Vitamin D

cholecalciferolPremium

cholecalciferol: Supports normal bones; D3 generally raises vitamin D blood levels more than comparable D2 doses.

ImmuneDentalBone & Joint
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Ingredients (1)

Other ingredients

SoftgelCapsule

One-piece gelatin capsule shell with a plasticizer (typically glycerin), used to encapsulate liquid or oil-based supplements

Sunflower Seed OilCarrier

Common vegetable oil from sunflower seeds used as a carrier in softgels for fat-soluble nutrients

Lab testing

How to take it

With a meal containing fat

On the label

Adults: Take one soft gel daily at mealtime.

Price check

$12.67

$10$20

Cheaper than 70% of 552 vitamin D supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.

Not medical advice. Consult your healthcare professional.

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