Magnesium Supplementation: Benefits, Limits and Choosing the Right Form

Magnesium is an essential mineral required for normal muscle and nerve function, energy metabolism and electrolyte balance. Dietary sources such as whole grains, leafy greens, legumes, nuts, seeds and cocoa provide sufficient magnesium for most people. The European Union allows health claims that magnesium helps reduce fatigue and supports normal muscular and nervous activity, but these claims do not imply that a supplement works as a universal energiser or relaxant.

Various magnesium salts – citrate, bisglycinate, malate, threonate, oxide – differ in absorption and digestive tolerance, yet clinical evidence does not prove any specific form is superior for sleep, stress reduction or fatigue in healthy individuals. Supplementation is most justified for those with low dietary intake, increased losses from intense physical activity, or chronic muscle cramps, while the majority should aim to improve their diet rather than rely on pills.