Vitamins & minerals
Magnesium
Names you may see: magnesium citrate bisglycinate glycinate oxide
The quick take
Magnesium is an essential mineral involved in muscle and nerve function, energy metabolism and bone health.
A closer look
What forms will I see on a label?
Citrate, oxide and bisglycinate are examples of compound forms. Compare the elemental magnesium amount, not the total weight of the compound.
Why people use it
People choose magnesium to meet nutritional needs and support normal muscle and nerve function. It is also found in electrolyte and mineral supplements.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Meeting magnesium needs supports normal function. A larger supplemental amount does not automatically improve sleep or athletic performance.
What should I know before using it?
Some forms or amounts cause diarrhoea. Kidney disease and interactions with certain antibiotics or osteoporosis medicines require professional guidance.
Sources & further reading
NIH Office of Dietary Supplements ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.