BioStacks
Best for
Ingredients (8)
Vitamin K2
100%Dose
3000 mcg
Target
90–200 mcg
Form
Standard
Vitamin D3
40%Dose
400 IU
Target
1000–5000 IU
Form
Premium
Vitamin K1
100%Dose
1000 mcg
Target
90–200 mcg
Form
Not listed
Vitamin K
100%Dose
4050 mcg
Target
90–200 mcg
Form
Not listed
Vitamin K2
56%Dose
50 mcg
Target
90–200 mcg
Form
Premium
Other Ingredients (8)
Soy LecithinEmulsifier
Widely used emulsifier derived from soybeans
CarobFlavor
Roasted powder from carob tree pods, used as a caffeine-free chocolate/cocoa substitute for flavor and brown color
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Sunflower Seed OilCarrier
Common vegetable oil from sunflower 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
BeeswaxCoating
Natural wax produced by honeybees, used as a coating and binding agent in softgels and tablets
Zinc OxideMineral
Common zinc form used for mineral fortification in supplements and protein powders
How to Take It
Take it anytime
Fat-soluble — take with a meal containing fat for better absorption. Time of day doesn't matter.
With a meal containing fat
On the label
As a dietary supplement, 1 softgel one or two times daily, with meals, or as directed by a healthcare practitioner. Taking with a fat-containing meal may further enhance absorption.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$62.99
Pricier than 95% of 586 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.