BioStacks
Best for
Ingredients (2)
Calcium
100%Dose/day
800 mg
Target
200–600 mg
Form
Premium
Vitamin D3
100%Dose/day
1000 IU
Target
1000–5000 IU
Form
Premium
Other Ingredients (9)
TalcAnti-caking
IARC classifies cosmetic-grade talc not containing asbestos as Group 2B (possibly carcinogenic to humans); perineal talc use as Group 2A (probably carcinogenic). Johnson & Johnson voluntarily withdrew talc-based baby powder from US/Canada in 2020 and globally in 2022 after extensive litigation tied to ovarian-cancer and mesothelioma cases. The 2018 FDA contamination survey found asbestos in 9 of 52 cosmetic talc products tested. As a supplement excipient talc is a pure manufacturing convenience — no nutritional or functional benefit to the user — so the asbestos-exposure risk has no offsetting upside. Safer alternatives (silicon dioxide, microcrystalline cellulose, rice hulls) are widely available.
Titanium DioxideColorant
Banned in the EU (2022) over concerns that its ultra-fine particles may damage DNA in gut cells. Still allowed in the US. Used only for white coloring — provides no health benefit.
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
Polyvinyl AlcoholCoating
Synthetic, water-soluble polymer used as a film former and binder in immediate-release tablet coatings
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Croscarmellose SodiumDisintegrant
Cross-linked cellulose derivative used as a superdisintegrant
How to Take It
Take it anytime
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, Magnesium and Zinc
Split into 2 doses across the day
On the label
Directions: As a calcium supplement, adults take two (2) tablets with any meal, twice daily or as directed by a healthcare provider. Do not exceed recommended dosage. Individual results may vary.
General guidance based on the ingredients, not a substitute for the label or your doctor.
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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.