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Magnesium is one of the most abundant minerals in the body, involved in hundreds of biochemical reactions. It's best known for its contribution to the reduction of tiredness and fatigue, but it does much more besides – helping turn food into energy, and contributing to normal muscle function, the normal function of the nervous system, and the maintenance of normal bones and teeth.

Most people can get the magnesium they need from foods like leafy greens, nuts and seeds, but many of us still fall short of recommended intakes – especially on a restricted diet. If that's you, a supplement is a simple way to top up. Magnesium comes in several forms – capsules, effervescent powders, topical sprays and nighttime formulations among them – so there's usually one to suit your routine.

Read the full explainer: Magnesium, explained →

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PURE ENCAPSULATIONS Potassium Magnesium Citrate 180 Capsule
£38.75 Unit price 21.5p peritem
PURE ENCAPSULATIONS Calcium Magnesium Citrate 90 Capsules
£21.75 Unit price 24.2p peritem
20% off
WELL.ACTUALLY. Magnesium Bisglycinate - Lime & Blackberry 250ml
Regular price£26.40£33.00 Unit price £105.60 perlitre
NATURESPLUS Magnesium Powder - Pink Lemonade 408g
£27.50 Unit price £67.40 perkg
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VIRIDIAN Magnesium Citrate with B6 90 capsules
£18.75 Unit price 20.8p peritem
20% off
LAMBERTS Magasorb® 180 tablets
Regular price£18.40£23.00 Unit price 10.2p peritem
SOLGAR Magnesium Citrate 60 tablets
SOLGAR Magnesium Citrate 60 tablets
£15.75 Unit price 26.3p peritem
VIRIDIAN Organic Magnesium 30 capsules
£29.50 Unit price 98.3p peritem
NATURESPLUS Magnesium Powder 400mg 360g
£27.50 Unit price £76.39 perkg
HIGHER NATURE Magnesium Effervescent 20 tablets
HIGHER NATURE Magnesium Effervescent 20 tablets
£6.50 Unit price 32.5p peritem
BIOCARE Magnesium Powder 90g
£18.00 Unit price £200.00 perkg
BIOCARE Magnesium Citrate 90 capsules
£21.00 Unit price 23.3p peritem
TERRANOVA Magnesium Complex 100 capsules
TERRANOVA Magnesium Complex 100 capsules
£32.25 Unit price 32.3p peritem
PHARMA NORD BioActive Magnesium 60 tablets
PHARMA NORD BioActive Magnesium 60 tablets
£8.25 Unit price 13.8p peritem
KIKI HEALTH Magnesium Oil Spray 125ml
KIKI HEALTH Magnesium Oil Spray 125ml
£12.50 Unit price £100.00 perlitre
SOLGAR Chelated Magnesium 100 tablets
SOLGAR Chelated Magnesium 100 tablets
£17.00 Unit price 17p peritem
20% off
WELL.ACTUALLY. Liposomal Magnesium Bisglycinate Apple Twist Flavour 250ml
Regular price£26.40£33.00 Unit price £105.60 perlitre
METAGENICS Megamag Night 174g
£30.00
METAGENICS Megamag Muscle 150g
£30.00
METAGENICS Megamag Calm 100g
£30.00

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