You're getting 2,000 IU of **Vitamin D3** per serving as cholecalciferol — the preferred form your body uses most efficiently. That dose sits right in the middle of the 1,000–5,000 IU clinical range, enough to maintain healthy blood levels for most people and support bone density, immune function, and mood regulation.

Since D3 is fat-soluble, your body absorbs it better with a meal containing some fat. The gummy format already includes sugar and tapioca syrup, but no added fat source — so pairing it with food matters here. There's no **Vitamin K2** in the formula, which is often paired with D3 to help direct calcium toward your bones rather than soft tissue.

If you're correcting a deficiency or live in a northern climate with limited sun exposure, 2,000 IU may not be enough — many practitioners recommend 4,000–5,000 IU daily in those cases. You'd need to double your serving to reach that range, which cuts the 45-serving bottle to about three weeks.

BioStacks
California Gold Nutrition Gummies

Vitamin D3

2 Gummies · 45 servings · $0.19/serving

iHerbAmazon

Best for

ImmuneDentalBone & Joint

Ingredients (1)

Vitamin D

100%

Dose

2000 IU

Target

1000–5000 IU

Form

Premium

Nutrition

Calories, macros & sodium.

  • Calories15 Calorie(s)
  • Total Carbohydrates3 Gram(s)
    • Total Sugars3 Gram(s)

Other Ingredients (9)

SucroseSweetener

Added sugars and high glycemic load; dental caries risk

Tapioca SyrupSweetener

High glycemic index similar to glucose syrup. Adds significant sugars and calories — often the primary ingredient by weight in gummy supplements. 'Organic' labeling does not change the glycemic impact.

Grape Skin Extract (Color)Colorant

Natural purple-red colorant from grape skins; the pigments are anthocyanins

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.

Adipic AcidAcidulant

A dicarboxylic acid used as an acidulant and buffering agent

Citric AcidAcidulant

Natural acid derived from citrus fruits

PectinGelling Agent

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

Sodium CitrateBuffer

Sodium salt of citric acid used for pH control, tartness, and chelation in 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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