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Magnesium

Magnesium is one of the most widely needed — and widely deficient — minerals in the modern diet. It acts as a cofactor in over 300 enzyme reactions, with central roles in energy (ATP) production, muscle and nerve function, the nervous system and a healthy stress response. Because around 99% of the body's magnesium sits inside cells rather than in the blood, the form you choose matters as much as the dose — different forms are absorbed differently and suit different goals. Our magnesium collection brings together every major form, so you can match the product to the need.

Choosing a form of magnesium

The form determines both how well magnesium is absorbed and what it's best suited to:

  • Magnesium glycinate — bound to the calming amino acid glycine; a popular evening choice for sleep, stress and muscle relaxation, and gentle on digestion.
  • Magnesium citrate — a well-absorbed organic form (used in clinically trialled preparations like Diasporal®) suited to general repletion and energy; also supports bowel regularity.
  • Magnesium orotate — the orotate carrier helps deliver magnesium into cells and toward the mitochondria, favoured for heart and cardiovascular support.
  • Magnesium threonate — studied for crossing into the brain, a choice for cognitive support.

Who may benefit

People with high stress loads, disrupted sleep, muscle tightness or cramps, low energy, or simply a magnesium-poor diet. Magnesium is also a key cofactor for activating vitamin D, so it's often paired with a D supplement.

Frequently asked questions

Which magnesium is best for sleep? Glycinate is the usual choice for evening use, as glycine itself is calming; threonate is another option for the mind. Many find magnesium pairs well with sleep-support herbs.
Which form for muscle cramps or tension? Glycinate and citrate are commonly used for muscle and neuromuscular support.
How much magnesium should I take? This depends on the form, your diet and your needs — if you're unsure, check with your healthcare professional.

Browse our full magnesium collection below. For energy-focused support, see also Energy; for stress, Adrenal & Nervous System Support. Always read the label and use only as directed. If symptoms persist, consult your healthcare professional.

  • Martin Pleas Tiss Salts Kidz Mineral Strong Bone Teeth 100t

    $14.09

    Homoeopathic Preparation. Bones that are strong and healthy from a young age are more likely to remain strong and healthy throughout our lives. As...

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    $14.09
  • Green Nutritionals Green Calcium Plant Source Pwd 250g

    $33.71

    A unique wholefood source of natural calcium, GreenCALCIUM is an organic marine plant (Lithothamnium calcareum) naturally rich in elemental calciu...

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    $33.71
  • Green Nutritionals Green Calcium Plant Source Pwd 100g

    $16.83

    A unique wholefood source of natural calcium, GreenCALCIUM is an organic marine plant (Lithothamnium calcareum) naturally rich in elemental calciu...

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    $16.83
  • Green Nutritionals Green Calcium Plant Source 60c

    $29.19

    A unique wholefood source of natural calcium, GreenCALCIUM is an organic marine plant (Lithothamnium calcareum) naturally rich in elemental calciu...

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    $29.19
  • Green Nutritionals Green Calcium Plant Source 240c

    $78.77

    A unique wholefood source of natural calcium, GreenCALCIUM is an organic marine plant (Lithothamnium calcareum) naturally rich in elemental calciu...

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    $78.77
  • Green Nutritionals Marine Magnesm Ocean Source Pwd 100g

    $28.07

    A natural form of Magnesium derived from the clean, mineral-rich seawater off the Irish Atlantic coast, with a multi-mineral matrix of 74 pure pla...

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    $28.07
  • Green Nutritionals Marine Magnesium Ocean Source 60c

    $28.07

    A natural form of Magnesium derived from the clean, mineral-rich seawater off the Irish Atlantic coast, with a multi-mineral matrix of 74 pure pla...

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    $28.07
  • Green Nutritionals Org Spirulina Mountain Powder 500g

    $135.06

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $135.06
  • Green Nutritionals Org Spirulina Mountain Powder 250g

    $70.87

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $70.87
  • Green Nutritionals Org Spirulina Mountain Powder 1kg

    $247.65

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $247.65
  • Green Nutritionals Org Spirulina Mountain 520mg 60vc

    $25.86

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $25.86
  • Green Nutritionals Org Spirulina Mountain 520mg 180vc

    $61.89

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $61.89
  • Green Nutritionals Org Spirulina Mountain 500mg 500t

    $90.00

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $90.00
  • Green Nutritionals Org Spirulina Mountain 500mg 200t

    $41.61

    Spirulina contains about 60% complete protein containing all essential amino acids, though with reduced amounts of methionine, cysteine and lysine...

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    $41.61
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    Nutra Nat Collagen Protein Unflavoured 450g

    Original Price $65.95
    Current Price $53.95

    Tone, repair and build lean muscle with Collagen Build, a natural body toning formulation with targeted BODYBALANCE® Bioactive Collagen Peptides. ...

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    Original Price $65.95
    Current Price $53.95
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  • Save 18%

    Nutra Nat Collagen Build Unflavoured 225g

    Original Price $43.95
    Current Price $35.95

    Tone, repair and build lean muscle with Collagen Build, a natural body toning formulation with targeted BODYBALANCE® Bioactive Collagen Peptides. ...

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    Original Price $43.95
    Current Price $35.95
    Save 18%
  • Fulhealth Industries Colloid Magnesium Concentrate 200ml

    $23.00

    Dr Norman Shealy, M.D., Ph.D., Neurosurgeon, says “that every known illness is associated with Magnesium deficiency.” And further mentions “Magnes...

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    $23.00
  • Markwell Nutrition Colozone Plus 100g

    $29.95

    ColoZone Plus is a natural, drug-free blend that stimulates your intestines and colon to help you feel better inside and out. Whether you suffer fr...

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    $29.95