Reviewed and updated September 12, 2026 · Alurevia Editorial Team
“Magnesium 500mg” can mean different things depending on the label. The most important question is whether 500mg refers to elemental magnesium — the amount of magnesium itself — or to the total weight of a magnesium compound.
Elemental magnesium vs compound weight
Magnesium supplements contain compounds such as magnesium oxide, glycinate or citrate. Each compound contains magnesium plus another component. The total compound weight is therefore larger than the amount of elemental magnesium it supplies.
For accurate comparison, use the magnesium amount in the Supplement Facts panel.
What does 500mg elemental magnesium mean?
It means the labelled serving provides 500mg of magnesium itself, regardless of how much total magnesium-compound material was required to supply it.
On a US Supplement Facts panel, 500mg elemental magnesium corresponds to 119% of the current 420mg Daily Value.
Is 500mg supplemental magnesium a high amount?
Yes. The Food and Nutrition Board sets the adult tolerable upper intake level for magnesium from supplements at 350mg/day, excluding magnesium naturally present in food. A 500mg elemental-magnesium supplement is above that reference level.
That does not mean a product should be self-prescribed or that more is better. Higher supplemental intakes can increase the likelihood of gastrointestinal effects, and individual suitability should be discussed with a healthcare professional.
How Alurevia labels its 500mg
Alurevia Magnesium Complex states 500mg elemental magnesium per one-capsule serving. It is supplied from eight named forms, with magnesium oxide listed first as the primary source.
Each bottle contains 90 capsules, so the labelled one-capsule-per-day use equals a 90-day supply.
How to compare a “500mg” product with another magnesium product
- Check whether the number is elemental magnesium or compound weight.
- Check how many capsules make one serving.
- Look at the magnesium forms and ingredient order.
- Compare days of supply and cost per day.
- Read the safety directions before use.
500MG ELEMENTAL MAGNESIUM · ONE CAPSULE · 90-DAY SUPPLY
$35 one-time or $31.50 every 3 months with Subscribe & Save. Save $3.50 on every 90-day delivery.
Frequently asked questions
Is 500mg magnesium the same in every supplement?
No. Some labels refer to the weight of a magnesium compound while others state elemental magnesium. Use the Supplement Facts panel to compare products.
What percentage of the Daily Value is 500mg magnesium?
500mg elemental magnesium is approximately 119% of the 420mg Daily Value used on US labels.
Is more elemental magnesium always better?
No. Higher dose is not automatically better and may increase side effects. The appropriate amount depends on individual circumstances.
Source
National Institutes of Health, Office of Dietary Supplements: Magnesium Fact Sheet for Health Professionals.
This article is general education and is not medical advice.