At 5,000 IU (125 mcg) per serving, you're getting **Vitamin D3** right at the top of the clinically studied range for supporting bone health, immune function, and calcium absorption. The form is cholecalciferol — the same type your skin produces from sunlight and significantly more effective than D2 at raising blood levels.

This dose is well-suited if a blood test has shown you're deficient or if you have limited sun exposure. At 5,000 IU, you're above the conservative 600 IU RDA but within the range that current research supports for meaningful impact, especially during winter months or for people with darker skin tones.

The tradeoff is the gummy format — you're getting added sugar and gelatin with each serving, and gummies generally have looser manufacturing tolerances than tablets or softgels. If that doesn't bother you, the dose and form here are solid for your vitamin D needs.

BioStacks
Nature Made

Extra Strength Vitamin D3 5000 IU (125 mcg) Gummies

2 Gummies · 75 servings

iHerbAmazon

Best for

ImmuneDentalBone & Joint

Ingredients (1)

Vitamin D3

100%

Dose

5000 IU

Target

1000–5000 IU

Form

Premium

Other Ingredients (10)

Glucose SyrupSweetener

High glycemic load; source typically corn (generally gluten-free)

SucroseSweetener

Added sugars and high glycemic load; dental caries risk

Natural FlavorsFlavor

Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.

Carnauba WaxCoating

Hard plant wax from the carnauba palm used to glaze gummies and tablets

Citric AcidAcidulant

Natural acid derived from citrus fruits

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Malic AcidAcidulant

Naturally occurring organic acid found in apples, used as a flavor enhancer and acidulant in supplements

PectinGelling Agent

Plant polysaccharide from citrus peels or apple pomace used to gel pectin-based gummies

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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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