BioStacks
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Ingredients (4)
Vitamin D3
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Calcium
100%Dose
1200 mg
Target
200–600 mg
Form
Standard
Magnesium
80%Dose
80 mg
Target
100–400 mg
Form
Not listed
Magnesium Oxide
80%Dose
80 mg
Target
100–400 mg
Form
Budget
Other Ingredients (5)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Polyethylene Glycol (Coating)Coating
A polyether polymer used as a tablet coating and plasticizer
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
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 2 tablets daily, prefrably with a meal, or as directed by a healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$9.99
Cheaper than 80% of 632 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.