BioStacks
Best for
Ingredients (3)
Calcium
100%Dose
333 mg
Target
200–600 mg
Form
Standard
Magnesium
100%Dose
167 mg
Target
100–400 mg
Form
Standard
Zinc
100%Dose
17 mg
Target
15–30 mg
Form
Standard
Other Ingredients (8)
Polysorbate 80Emulsifier
Chassaing et al. 2015 (Nature, PMID 25731162) tested polysorbate 80 directly and showed it thinned the gut mucus barrier, altered microbiota composition, and induced low-grade inflammation and metabolic syndrome in mice. The strongest human evidence is for a related emulsifier rather than polysorbate 80 itself: Chassaing 2022 (Gastroenterology, PMID 34774538) was a controlled human feeding RCT of carboxymethylcellulose (CMC) that found microbial encroachment into the mucus layer — polysorbate 80 has not been tested in an equivalent human trial. In vitro work (e.g. Roberts 2010) shows polysorbate 80 enhances bacterial translocation across intestinal epithelium, and observational data link overall dietary-emulsifier exposure to IBD risk. EFSA is mid re-evaluation of polysorbates (E432–E436). For a supplement excipient with purely cosmetic function (improving the look/texture of soft gels and liquids), the gut-barrier risk profile is unfavorable when safer alternatives (sunflower lecithin, MCT carriers, gum acacia) 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.
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
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Triethyl CitrateCoating
A citric acid ester used as a plasticizer in film and enteric coatings
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Brazilian palm tree wax
Not reviewed yet
How to Take It
Best taken in the evening
The Magnesium in it is what pulls this toward the evening. Take it with food — the zinc in it is what makes this kind of product feel nauseating on an empty stomach.
With food
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron
On the label
Adults: Take 1-3 caplets daily with a meal. Take a few hours before or after taking other medications
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
C$18.99≈ $13.86
Cheaper than 70% of 298 calcium 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.