BioStacks
Best for
Ingredients (7)
Vitamin D
100%Dose
8320 IU
Target
1000–5000 IU
Form
Premium
Vitamin D
100%Dose
4160 IU
Target
1000–5000 IU
Form
Premium
Vitamin C
100%Dose
833 mg
Target
250–2000 mg
Form
Standard
Vitamin K
100%Dose
438 mcg
Target
90–200 mcg
Form
Not listed
Vitamin A
100%Dose
3125 mcg RAE
Target
700–1500 mcg
Form
Not listed
Other Ingredients (7)
Denatured AlcoholSolvent
At higher topical levels it can dry and irritate skin and disrupt the skin barrier with repeated use.
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.
Citric AcidAcidulant
Natural acid derived from citrus fruits
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
PhospholipidsCarrier
Naturally occurring phospholipids (primarily phosphatidylcholine) used to form liposomal encapsulation for nutrient delivery
Mixed TocopherolsAntioxidant
Natural vitamin E used as preservative
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.