BioStacks
Best for
Ingredients (6)
Vitamin D3
100%Dose
5000 IU
Target
1000–5000 IU
Form
Premium
Trans Menaquinone-7
100%Dose
100 mcg
Target
90–200 mcg
Form
Premium
Menaquinone-4
100%Dose
1000 mcg
Target
90–200 mcg
Form
Standard
Vitamin K Activity
100%Dose
2100 mcg
Target
90–200 mcg
Form
Not listed
Iodine
100%Dose
1000 mcg
Target
150–500 mcg
Form
Not listed
Other Ingredients (7)
MaltodextrinBinder
Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Dicalcium PhosphateBinder
Calcium and phosphorus compound used as binder
StarchBinder
Carbohydrate polymer used as a binder, filler, and disintegrant in tablets and capsules
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
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 one (1) capsule once daily with food, or as recommended by a healthcare practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$25.67
Near the median of 165 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.