You're getting 5,000 IU of **Vitamin D3** per softgel — the top of the clinically studied maintenance range for supporting bone density, immune function, and mood regulation. The form is cholecalciferol, which raises and sustains blood levels significantly better than D2, and the softgel delivers it in olive oil so your body can absorb it with the fat it needs.

Vitamin D deficiency is one of the most common nutrient gaps worldwide, especially if you get limited sun exposure or live in a northern climate. At this dose, you're well-positioned to correct low levels and maintain the range associated with benefits across bone health, immune resilience, and muscle function.

One thing worth knowing: 5,000 IU sits above the official tolerable upper limit of 4,000 IU/day. Many practitioners use this dose safely for deficiency correction, but it's worth testing your blood levels periodically rather than supplementing indefinitely at this amount.

BioStacks
NOW

High Potency Vitamin D-3 5,000 IU

Capsule · 1 Softgel · 120 servings · $0.06/serving

iHerbAmazon

Best for

ImmuneDentalBone & Joint

Ingredients (1)

Vitamin D

100%

Dose

5000 IU

Target

1000–5000 IU

Form

Premium

Other Ingredients (5)

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Extra Virgin Olive OilCarrier

Cold-pressed olive oil used as a carrier and filler in softgel capsules for fat-soluble nutrients

GlycerinHumectant

Sweet-tasting liquid used in soft capsules and liquids

Safflower Seed OilCarrier

Light, neutral oil from safflower seeds used as a carrier in softgels for fat-soluble nutrients

Purified WaterSolvent

Water meeting USP specifications used as solvent/vehicle in gummies and liquids

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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.

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