Magnesium Supplements Australia
Magnesium is one of the most widely used supplements in functional medicine — but the form matters. Glycinate, citrate, malate, and threonate each bind magnesium to a different carrier molecule, and that changes how it is absorbed, where it acts in the body, and what it is best suited for.
Choosing the right form starts with knowing what you are trying to support. The guide below covers each form plainly: what it does well, who it suits, and where another form would serve you better.
Understanding the four main forms
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Magnesium Glycinate — sleep, stress, and nervous system support
Glycinate is magnesium bound to glycine, an amino acid with its own calming properties. It is one of the most well-absorbed forms available, and one of the gentlest on the digestive system — a common complaint with cheaper magnesium forms such as oxide. If you have been directed to magnesium for sleep quality, muscle tension, anxiety, or general nervous system support, glycinate is usually the first form to consider. It is also the go-to for people who have had digestive issues with magnesium previously.
Not the right choice if your primary goal is bowel regularity — citrate is better suited for that. -
Magnesium Citrate — digestive regularity
Citrate is magnesium bound to citric acid. It absorbs reasonably well, but its most relevant property is its effect on the gut — it draws water into the intestines, which can support bowel motility. This makes it a common ingredient in digestive support formulas. It has a specific role and is less versatile than glycinate or malate for broader use.
Not the right choice if you are sensitive to loose stools, or if your goal is sleep, stress, or energy support. -
Magnesium Malate — energy production and muscle recovery
Malate is magnesium paired with malic acid, a compound directly involved in the Krebs cycle — the process your cells use to generate ATP. This makes it a natural fit for protocols focused on fatigue, physical performance, or muscle recovery. If you have been directed to magnesium as part of an energy or mitochondrial support protocol, malate is worth prioritising over glycinate.
Not the right choice if your primary goal is sleep or nervous system support — glycinate is better suited there. -
Magnesium Threonate — cognitive function and brain health
Threonate is a newer form developed specifically for its ability to cross the blood-brain barrier more effectively than other forms. It is the most targeted option when cognitive function, memory support, or neurological health is the focus. Research in this area is still emerging, and it tends to be priced higher than other forms — best reserved for a specific cognitive application rather than general magnesium replenishment.
Not the right choice if your needs are primarily physical — glycinate or malate will address those goals better at a lower cost per dose.
Magnesium products at Fairfield Nutrition
| Product | Brand | Best For | Key Ingredients / Notes |
|---|---|---|---|
| Pure Encapsulations Magnesium Glycinate | Pure Encapsulations | Standalone magnesium glycinate; our most popular magnesium | 120mg elemental magnesium per capsule as magnesium glycinate; hypoallergenic; no unnecessary excipients; available in 90 or 180 caps |
| Seeking Health Optimal Magnesium (90 caps) | Seeking Health | Dedicated magnesium supplementation in two chelated forms | Albion Magnesium Malate + TRAACS Magnesium Lysinate-Glycinate; standalone formula; 90 caps |
| Seeking Health Magnesium Glycinate Powder (187g) | Seeking Health | Flexible-dose standalone magnesium glycinate | Pure magnesium glycinate powder; adjustable serving size; capsule-free option; 187g |
| Sodii Electrolyte Hydration Sample Sachet | Sodii | Trialling an electrolyte formula before committing to a full size | Sodium-forward electrolyte blend; includes magnesium; single-serve sachet format |
| Pure Encapsulations O.N.E. Multivitamin (60 caps) | Pure Encapsulations | Once-daily comprehensive nutrient foundation | Full multivitamin with chelated minerals including magnesium; active folate (L-5-MTHF); 60 caps |
| Thorne Basic Nutrients 2 a day (60 caps) | Thorne | Foundational daily multivitamin and mineral | Two-capsule daily formula; vitamins A, C, D, E, K, B-complex with magnesium; 60 caps |
How to choose between Magnesium products
The clearest starting point is deciding whether magnesium is the specific nutrient you are supplementing, or whether you are looking for a formula that addresses a particular function — sleep, energy, histamine support, or daily nutrient cover — and magnesium is one component within that.
- Standalone magnesium glycinate: Pure Encapsulations Magnesium Glycinate is our most popular standalone magnesium and the most direct starting point for sleep, stress, or nervous system support. It delivers 120mg elemental magnesium per capsule in a hypoallergenic, excipient-free formula available in 90 or 180 caps. Seeking Health Magnesium Glycinate Powder is an alternative for those who prefer to avoid capsules or want adjustable dosing.
- Dual-form standalone magnesium: Seeking Health Optimal Magnesium combines malate and lysinate-glycinate in a single capsule — a practical option when both energy metabolism and nervous system support are relevant, or when protocol variety across forms is preferred.
- Targeted function blends: Pure Sleep combines magnesium with ashwagandha and saffron for evening sleep support. Histamine Nutrients includes magnesium within a broader histamine support protocol — appropriate when the wider formula is what is indicated, not magnesium alone.
- Electrolyte concentrates: Sodii Electrolytes delivers magnesium as part of a broader electrolyte profile — relevant when hydration and mineral replenishment is the primary goal, not standalone magnesium supplementation.
- Daily multivitamins: Pure Encapsulations O.N.E. Multivitamin and Thorne Basic Nutrients 2/day both include magnesium as part of a comprehensive daily formula — worth noting for protocol overlap checks rather than as a dedicated magnesium source.
If your practitioner has directed you to supplement magnesium specifically, start with the standalone formulas. If you are following a function-specific protocol, check whether a targeted blend already covers your needs before adding a standalone supplement.
All Magnesium products stocked at Fairfield Nutrition are shown below.

Sodii Electrolyte Hydration Sample Sachet






























