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Home › Supplement Ingredients › Magnesium

Ingredient guide

Magnesium explained

An essential mineral involved in hundreds of processes in the body. Here’s what magnesium does, how much you need and where to find it.

Essential mineralAuthorised health claimsIn Magnesium Complex 4-in-1

What it does

What does magnesium do?

Magnesium is an essential mineral, so you need to get it from food or supplements. Magnesium contributes to:

  • the reduction of tiredness and fatigue
  • normal muscle function
  • normal functioning of the nervous system
  • normal psychological function
  • normal energy-yielding metabolism
  • electrolyte balance
  • the maintenance of normal bones and teeth

These are authorised health claims in the UK.

How much

How much magnesium do you need?

Adults aged 19 to 64Daily need (NHS)
MenAbout 300 mg
WomenAbout 270 mg

Good food sources include nuts, seeds, wholegrains, leafy green vegetables, beans and fish. Read our guide to types of magnesium.

In our range

Magnesium in our products

Our Magnesium Complex 4-in-1 combines magnesium bisglycinate, threonate, malate and taurate in one capsule, taken as 2 capsules a day.

Safety

Who should take care?

  • Taking too much magnesium can cause diarrhoea; the NHS says 400 mg or less a day from supplements is unlikely to cause harm
  • Speak to your GP if you have kidney problems
  • Magnesium can affect how some antibiotics and other medicines are absorbed: ask your pharmacist about timing

Questions & answers

Frequently asked questions

More answers in our supplement FAQs.

What does magnesium do?

Magnesium contributes to the reduction of tiredness and fatigue, normal muscle function, normal functioning of the nervous system and normal energy-yielding metabolism, among other functions.

How much magnesium do women need?

The NHS says women aged 19 to 64 need about 270 mg of magnesium a day, and men about 300 mg.

Which form of magnesium is best?

No single form is best for everyone. A complex like our Magnesium Complex 4-in-1 includes bisglycinate, threonate, malate and taurate.

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