BioStacks
Best for
Ingredients (10)
Vitamin D
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Menaquinone-4 (MK-4)
100%Dose
4500 mcg
Target
90–200 mcg
Form
Standard
d-gamma Tocopherol
50%Dose
25 mg
Target
50–268 mg
Form
Premium
Vitamin K1
100%Dose
1000 mcg
Target
90–200 mcg
Form
Budget
Vitamin A
79%Dose
550 mcg RAE
Target
700–1500 mcg
Form
Standard
Other Ingredients (4)
Medium Chain Triglyceride OilCarrier
Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
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
On the label
Take 1 softgel daily.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$39.00
Pricier than 83% of 158 vitamin K 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.