Category Dossier
A summary of what labels and public sources show, what remains unknown, and what we watch for.
Lab-Backed Reports
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Lab findings pending
No Major Findings
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Lab findings pending
Potential concerns we check labels and public sources for. This list is not a finding about every product in the category.
How we review magnesium
Label review today. Lab checks after validation.
Buying guide
What to look for when shopping.
Building the most comprehensive screening database for magnesium.
Get Notified When ReadyWe're preparing lab tests for this category. Join the Watchdogs to be notified when results are ready.
Join the WatchdogsProducts with no adverse findings in our screening
Products currently being tested or awaiting final analysis

NOW Foods
Label review complete. Published findings are still pending.

Natural Vitality
Label review complete. Published findings are still pending.

BioSchwartz
Label review complete. Published findings are still pending.

Solgar
Label review complete. Published findings are still pending.

Thorne
Label review complete. Published findings are still pending.

InnovixLabs
Label review complete. Published findings are still pending.
Label and public-source review today; lab checks after validation
We read the label and compare it with manufacturer, regulator, recall, and other public sources.
The in-house lab and each method must be validated before any report is called lab-backed.
Every report states whether its evidence is label-only or lab-backed and explains the limits.
Continue the dossier
Move from report summaries into shopping guidance, today's label review, and the planned lab process.