Magnesium
What the European Food Safety Authority and the United States National Institutes of Health have published about magnesium intake, and what the catalogue records. Reference figures and citations only.
Stacky is an organisational tool, not a medical device. It does not provide medical advice, and nothing on this page says what magnesium does. Talk to a doctor or pharmacist before starting, stopping or changing what you take.
Published intake references
Each figure is one authority’s published value, with the kind of figure and the people it applies to as that authority stated them. Where the EU and the US differ, both are shown and neither is averaged or converted. Only a tolerable upper intake level sets a ceiling. A recommended or adequate intake is context, not a limit.
EUEuropean Union — EFSA
Applies to one chemical form only: readily dissociable magnesium salts (e.g. chloride, sulphate, aspartate, lactate) and compounds such as MgO EUEFSA
USUnited States — NIH ODS / IOM
Applies to one chemical form only: supplemental / pharmacological magnesium USNIH ODS
To cite a figure, cite the authority’s document linked on its card, and this page as where you read it: stacky-app.com/substances/magnesium, retrieved 13 November 2026. Every card has its own address: add #eu-ai-2 to the page URL for the first one.
Forms of magnesium with their own page
The figures above are set on magnesium, the element. A supplement label may declare the element or the whole salt, and the element is a different fraction of each salt’s weight. Each form’s page shows that fraction and reads the label conventions.
Products in Stacky’s catalogue containing Magnesium
18 products whose label declares magnesium, listed by brand and drawn as the app draws them. Amounts are the manufacturer’s printed figures; Stacky has measured nothing and ranks nothing.
How it is recorded
What the app records so it can schedule a dose. None of it is advice.
Forms recorded: Capsule.
Default food note in the app: with food.
Recorded interactions
How Stacky summarises what a named source says about magnesium taken alongside another substance: absorption and nutrient status only. The category and the summary are Stacky’s words; each row links to the source, and the source’s own wording governs. A row without one is not published, and neither is one whose source description names a disease or clinical condition: 1 such row for Magnesium stays in the app. None of these says whether a combination is good or bad.
| Stacky’s category | Summary, in Stacky’s words | Source |
|---|---|---|
| Reduces absorption or status of Manganese | Supplemental magnesium at 200 mg a day slightly decreased manganese bioavailability in healthy adults, either by lowering absorption or by increasing excretion. Scope the source gave: 200 mg a day of supplemental magnesium. |
Linus Pauling Institute, Manganese Checked 6 Aug 2026 |
| Increases absorption or status of Vitamin B1 | Making thiamin diphosphate, the coenzyme form of thiamin, from free thiamin requires magnesium alongside ATP and thiamin pyrophosphokinase. | Linus Pauling Institute Checked 6 Aug 2026 |
| Increases absorption or status of Vitamin D3 | Magnesium influences the concentration of the active form of vitamin D as well as parathyroid hormone. Low magnesium status is described alongside resistance to some of the effects of vitamin D. | NIH ODS Checked 6 Aug 2026 |
| Documented relationship with Zinc | One study found that zinc supplements at 142 mg a day interfered with magnesium absorption and disrupted magnesium balance. That intake is well above the tolerable upper intake level for zinc. Scope the source gave: 142 mg a day of supplemental zinc (single study in healthy adult males). |
NIH ODS Checked 6 Aug 2026 |
Indexed studies
Stacky has 5 papers indexed against magnesium, and none of them is published here. A study reaches this page only if its own title names Magnesium and does not name a disease or clinical condition. None of the 5 passes that rule. They remain in the app. How this list is built →
About this page
Stacky is a supplement tracking app. It renders what you take and what published sources say about it; it does not tell you what to take. Every figure on this page names the authority that published it and links to that authority’s own page.
Not on this page: a dose of our own, a grade, a verdict on whether magnesium works, or any statement that it treats, prevents or improves a condition. How these pages are built →
Figures are read from the authorities’ published tables and can go out of date when those tables are revised. If one here is wrong, tell us at support@stacky-app.com and we will check it against the source.