Public record
Magnesium: the public record
Each table is computed from the named federal dataset as of its data date; the method is under each one.
Adverse event reports
Most reported events in FDA adverse event reports for magnesium
Through 2026-10-28, FDA had received 77,492 adverse event reports for magnesium, 48,095 of them marked serious by the reporter. The symptom terms named most often were fatigue (8,710), nausea (6,656) and diarrhoea (6,633).
| Measure | Value | Note |
|---|---|---|
| All reports received | 77,492 | |
| Reports the reporter marked serious | 48,095 | death, hospitalisation, disability or similar outcome |
| Fatigue | 8,710 reports | |
| Nausea | 6,656 reports | |
| Diarrhoea | 6,633 reports | |
| Headache | 6,008 reports | |
| Pain | 5,296 reports |
How this was calculated
Counted FAERS reports listing this active substance, then the reaction terms named most often. A report can name several reactions, and a term can describe the illness being treated and not an effect of the drug. Terms about product use or complaints rather than symptoms (for example drug ineffective) were left out of the list.
Reports where FDA recorded magnesium as a single-ingredient active substance (any brand), all years to 2026-10-28
FAERS reports are unverified and do not prove the drug caused the event. Reporting rises with use, publicity and lawsuits, so these counts cannot give rates or risks and cannot be compared between drugs.