BioStacks
Best for
Ingredients (5)
Calcium
100%Dose
1000 mg
Target
200–600 mg
Form
Premium
Vitamin D
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Magnesium
100%Dose
500 mg
Target
100–400 mg
Form
Not listed
Magnesium Citrate
Amount not found
Magnesium Oxide
Amount not found
Other Ingredients (6)
AlfalfaFiller
A nutrient-dense plant sometimes used as a base or filler in supplement formulations
Dandelion (herb base)Botanical
Dandelion root/leaf (sometimes combined with parsley leaf) used as an herbal base.
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Dandelion (herb base)Botanical
Dandelion root/leaf (sometimes combined with parsley leaf) used as an herbal base.
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
How to Take It
Best taken in the evening
The Magnesium in it is what pulls this toward the evening. Take it with a meal containing fat — the vitamin D in it absorbs poorly without one.
With a meal containing fat
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron and Zinc
On the label
Take six capsules daily with a meal or glass of water. Store in a cool, dry place.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$18.90
Near the median of 552 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.