BioStacks
Source Naturals

Vitamin K 500 mcg

1 Tablet · 100 servings

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What it does

A combination of 2 label ingredients.

Vitamin K

Form not confirmedGrade —

Supports normal blood clotting and activates proteins involved in maintaining bones.

Calcium

Form not confirmedGrade —

Supports the maintenance of normal bones and teeth, muscle function and nerve signaling.

General Health
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Ingredients (2)

IngredientDoseTarget/referenceForm

Calcium

43 mg

Trace amount — not scored

Other ingredients

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

Lab testing

How to take it

With a meal containing fat

On the label

1 tablet daily, preferably with a meal.

Price check

$9.97

$0.10 / serving

$10$20$50

Cheaper than 85% of 144 vitamin K supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.

Not medical advice. Consult your healthcare professional.

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