500 mg Magnesium malate: how much elemental magnesium?
If 500 mg is the compound weight
≈ 75 mg elemental magnesium
75 mg of elemental magnesium is within the 350 mg daily upper limit for supplements (ages 9 and up).
If 500 mg is already elemental
≈ 3,333 mg of Magnesium malate powder
500 mg of elemental magnesium is above the 350 mg daily upper limit for supplements. Doses this high often cause loose stools and should be taken only on a doctor’s advice.
How the math works
Elemental magnesium = compound weight × 15% = 500 mg × 0.15 ≈ 75 mg.
The magnesium share of Magnesium malate differs between products, salts, and hydration states; 15% is a typical value. Use the elemental number on your label when it is given.
Check any label
The label calculator converts any compound weight to elemental magnesium and compares it with the limit for your age.