BioStacks
Best for
Ingredients (2)
Magnesium
100%Dose/day
399 mg
Target
100–400 mg
Form
Standard
Calcium
100 mgTrace amount — not scored
Other Ingredients (6)
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.
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
GlycineAmino Acid
Non-essential amino acid; smallest of the 20 proteinogenic amino acids. Mildly sweet taste — sometimes used as a low-glycemic flavor modifier in addition to its bioactive role
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the evening
Often taken at night for relaxation and sleep, but absorption is the same anytime — consistency matters most.
With or without food
Space it a couple of hours from Iron and Calcium
Label directs 3 servings — keep one for the evening
On the label
As a dietary supplement, take one tablet three times a day.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$9.99
Cheaper than 93% of 579 magnesium 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. 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.