BioStacks
Best for
Ingredients (4)
Vitamin D3
100%Dose
2000 IU
Target
1000–5000 IU
Form
Premium
Zinc
100%Dose
50 mg
Target
15–30 mg
Form
Standard
Elderberry 10:1 Extract
15%Dose
45 mg
Target
300–600 mg
Form
—
Echinacea 10:1 Extract
2%Dose
5 mg
Target
300–1500 mg
Form
—
Nutrition
Calories, macros & sodium.
- Sodium15 mg
Other Ingredients (11)
Glucose SyrupSweetener
High glycemic load; source typically corn (generally gluten-free)
Glucose SyrupSweetener
High glycemic load; source typically corn (generally gluten-free)
SucroseSweetener
Added sugars and high glycemic load; dental caries risk
Coconut OilCarrier
Edible oil from coconut used as a release/anti-sticking agent and carrier in gummies and soft formats
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.
Purple CarrotColor
Anthocyanin-rich purple carrot, used as a natural coloring/food ingredient.
Carnauba WaxCoating
Hard plant wax from the carnauba palm used to glaze gummies and tablets
Citric AcidAcidulant
Natural acid derived from citrus fruits
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
Space it a couple of hours from Iron and Calcium
On the label
Take 3 gummies daily.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$16.95
Near the median of 632 vitamin D supplements
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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.