Elemental vs Compound: What the Numbers on a Mineral Label Mean

Our Magnesium Glycinate label reads 750 mg per serve and, just underneath, provides 150 mg elemental magnesium. Both numbers are correct. They simply measure different things.

The compound weight

Minerals such as magnesium, zinc and iron are supplied bound to another molecule. Magnesium glycinate is magnesium bound to glycine, an amino acid. The larger number, 750 mg, is the weight of the whole compound: the magnesium plus the glycine it is attached to.

The elemental amount

The smaller number, 150 mg, is the weight of the magnesium itself within that compound. This is called the elemental amount, and it is the figure to use when comparing one magnesium product with another.

Why it matters when comparing

Different forms carry different proportions of the mineral. Comparing compound weights across forms can be misleading, so compare elemental amounts per serve instead. If a label only gives the compound weight, the manufacturer can usually tell you the elemental amount.

The same idea on other labels

You will see the same convention on zinc and iron products. Our minerals list the form and amount on every supplement panel.

Key takeaways

• The larger number is the compound; the smaller number is the mineral itself.
• Compare elemental amounts per serve, not compound weights.
• Check the serving size before comparing two products.

Questions about a product or its label? Email us at info@elevatenutra.com.au.

Always read the label and follow the directions for use. Supplements should not replace a balanced diet. If symptoms persist, talk to your health professional. This article is general information only and is not medical advice.