Best Magnesium L-Threonate Australia 2026: 7 Compared

Last updated: September 25, 2026 · Originally published: September 11, 2026 · By Eternal Elixir Editorial

The best magnesium L-threonate in Australia gives you the full 2,000 mg serve used at the top of the trial dose range, tells you how much elemental magnesium that serve holds, and reaches you without an import wait. Our pick is Eternal Elixir Magnesium L-Threonate 2000mg. Three capsules give 2,000 mg of magnesium L-threonate (about 144 mg of elemental magnesium), a 90-capsule bottle lasts 30 days at $2.00 a serve, and orders leave our Sydney warehouse within 24 hours.

Magnesium L-threonate is magnesium bound to L-threonic acid, a compound the body makes when it breaks down vitamin C. It was first described in a 2010 study in rats from a team at MIT, and it is the form people buy for memory, focus and sleep rather than for cramps or regularity.

Every label leads with the weight of the whole compound: 2,000 mg, 2 g, 1 g per scoop. The magnesium is a small share of that. On the labels that print both numbers, 2,000 mg of magnesium L-threonate carries 144 mg to 147 mg of elemental magnesium, which is roughly 7.2% to 7.4% of the weight.

This guide compares seven magnesium L-threonate products you can order in Australia today on the numbers that decide value: the AUD price, the compound and the elemental magnesium in each serve, capsules per bottle, and cost per serve. It also covers how each one reaches you, what the human trials used and didn’t show, and who should skip this form of magnesium.

Key numbers:

• 2,000 mg is the labelled serve on six of the seven products, and the top of the 1.5 g to 2 g daily range used in the 12-week cognition trial (Liu and colleagues, 2016).
• 1 g a day for 21 days was the dose in the sleep trial of 80 adults aged 35 to 55 (Hausenblas and colleagues, 2024).
• $1.67 to $2.33 is the single-purchase price range per serve across the six products that state a 2,000 mg serve.
• 350 mg a day is the Australian upper level for adults for magnesium taken as a supplement. One 2,000 mg serve of magnesium L-threonate supplies 144 mg to 147 mg of that.

Best magnesium L-threonate in Australia compared (as of Sep 2026)

Each row is one labelled daily serve. Cost per serve is the price divided by the serves in the pack, using each label’s own serving size. Prices are in AUD before postage and were read on 25 September 2026.

Three products from earlier versions of this comparison are gone. The Bulk Nutrients magnesium L-threonate capsule page now redirects to the brand’s magnesium glycinate, the Vitaceuticals pharmacy listing we used returns an error page, and the NUQIIT listing on Amazon Australia shows as currently unavailable. We replaced them with products you can order today, so check any older price comparison you find against the live listing.

Add Magnesium L-Threonate to cart · $59.99

Still deciding whether threonate is the right form at all? Our guide to the best magnesium supplements in Australia sets glycinate, citrate, threonate and the other common forms side by side. This page stays narrow and covers L-threonate only. For the mechanism and the wider research, read our explainer on magnesium L-threonate benefits for brain and sleep.

How we ordered the seven

Eternal Elixir makes Magnesium L-Threonate 2000mg. It is our pick and sits first for the reasons given in its entry below. Places two to seven are ordered by cost per labelled 2,000 mg serve on a single purchase, cheapest first. The compounded option sits last because its page doesn’t state a serve, so it can’t be placed on that scale.

We did not lab-test any of these products. Every competitor figure comes from the brand’s own listing or the retailer’s listing, and the per-serve maths uses the serving size printed on each label. These are the things we compared:

• Serve size. Does one labelled serve reach 2,000 mg, the top of the range used in the 12-week cognition trial? Is the compound a named raw material such as Magtein®, or unbranded?
• Elemental magnesium. Does the label say how much magnesium you actually swallow? Without it you can’t add the product to any other magnesium you take.
• Cost per serve in AUD. Price divided by serves per pack, before postage. A cheap bottle with a small serve can cost more per day than a dearer bottle.
• Delivery. Whether it ships from inside Australia, and where free shipping starts.
• Everything else in the capsule. Fillers, capsule material (gelatine or plant) and any added actives.

#1. Eternal Elixir Magnesium L-Threonate 2000mg: our pick

Our Magnesium L-Threonate 2000mg is a plain three-capsule serve: 2,000 mg of magnesium L-threonate with about 144 mg of elemental magnesium, plus rice flour and a vegetable capsule. A 90-capsule bottle holds 30 serves at $59.99, which is $2.00 a day.

Label facts: 90 vegetable capsules · 3 capsules per serve · 2,000 mg magnesium L-threonate per serve · approx. 144 mg elemental magnesium per serve · 30 serves · $59.99 · $2.00 per serve.

Why it is our pick: it reaches the full 2,000 mg in capsules, so there’s no scoop to level and no drink to mix. The label gives the elemental figure, so you can add it to any other magnesium in your day. The directions split the serve by goal. For sleep you take all three capsules in the evening, and for focus you take two in the morning and one in the evening. And because it ships from our Sydney warehouse within 24 hours on business days, there is no overseas freight or import wait.

On price we’ll be plain about the trade. On one bottle, $2.00 a serve sits in the middle of this table. Switch Nutrition’s powder, Source Naturals and Life Extension all cost less per serve. Bundles change that. Two bottles save 10% ($1.80 a serve), three save 15% ($1.70 a serve) and five save 20%, which brings a serve down to $1.60, the lowest per-serve figure on this page. Orders over $100 ship free, so a two-bottle order already clears the threshold.

Every batch is third-party lab tested for purity and potency, and the product page offers the current batch certificate of analysis on request. Every order carries a 30-day money-back guarantee, and Afterpay is available at checkout.

Who it suits: people who want the full 2,000 mg in capsules shipped from inside Australia, people who want the elemental figure printed on the label, and anyone already buying from our range who can combine orders to clear free shipping.

Who it doesn’t suit: buyers who want the Magtein® brand name on the label, anyone who would rather drink a powder than swallow three capsules, and anyone who wants the lowest single-bottle price and doesn’t mind waiting for an overseas order.

Pros:

• 2,000 mg per three-capsule serve, the top of the dose range in the 12-week cognition trial
• Elemental magnesium stated on the label, at approx. 144 mg per serve
• Ships from Sydney within 24 hours on business days, free on orders over $100
• Bundle pricing brings a serve down to $1.60 on five bottles
• Separate label directions for sleep and for focus
• 30-day money-back guarantee and Afterpay

Cons:

• $2.00 a serve on a single bottle, more than Switch Nutrition, Source Naturals and Life Extension
• The raw material isn’t sold under a brand name such as Magtein®
• Contains rice flour as a filler, where Switch Nutrition and TCPA list none
• One published customer review on the product page so far

Building a wider routine? The same order can carry NMN 500mg for the morning, Saffron Extract 30mg for mood support, or TMG 2000mg. If you are considering Methylene Blue Capsules 10mg, read its medicine-interaction notes first and talk to your doctor if you take any prescription medicine.

#2. Switch Nutrition Mag3: lowest price per serve

Switch Nutrition’s Mag3 is an unflavoured powder whose only listed ingredient is Magtein® magnesium L-threonate, the branded raw material used in the published trials. One heaped scoop gives 2,000 mg, with 144 mg of elemental magnesium on the panel.

Label facts: 30 serves · 1 heaped scoop (2,000 mg) · 2,000 mg Magtein® per serve · 144 mg elemental magnesium per serve · $49.95 · $1.67 per serve.

At $1.67 a serve it is the cheapest 2,000 mg serve in this comparison on a single purchase, and there is nothing else in the tub. The trade-offs are practical. A “heaped” scoop is less exact than a capsule, you need a drink to stir it into, and free shipping starts at $150. The label says it isn’t intended for children under 15 or for pregnant or lactating women, and it is made in a facility that also handles wheat, tree nuts, seeds, dairy, soy, corn and fish. The product page showed nine reviews, all five stars, when we checked.

Who it suits: powder drinkers who want the Magtein® name and the lowest single-purchase cost per serve, especially if their order clears $150.

Who it doesn’t suit: anyone who wants to take a serve on the go, and anyone who needs exact dosing without kitchen scales.

#3. Source Naturals Magtein® (iHerb AU): cheapest capsule serve

Source Naturals sells Magtein® in a 180-capsule bottle through iHerb Australia at $106.52. Three capsules give 2 g of Magtein® and 147 mg of magnesium, and the bottle holds 60 serves, so a serve costs $1.78. That makes it the cheapest capsule serve in this comparison, with the highest stated elemental figure per serve.

Label facts: 180 capsules · 3 capsules per serve · 2 g Magtein® per serve · 147 mg magnesium per serve (the panel counts magnesium from both the threonate and the magnesium stearate) · 60 serves · $106.52 · $1.78 per serve.

Three details matter. The capsules are gelatine, so it doesn’t suit vegetarians. The label suggests starting on one capsule a day and building up to three, taken in divided doses. It is also the largest outlay here, since you pay for two months at once. It is an iHerb order, so delivery time and postage depend on the shipping option you choose at checkout. It showed a 4.8 rating from 5,717 reviews on iHerb when we checked.

Who it suits: capsule buyers who want the lowest cost per serve and don’t mind gelatine or a bigger upfront spend.

Who it doesn’t suit: vegetarians and vegans, and anyone who wants the product from an Australian warehouse.

#4. Life Extension Neuro-Mag (iHerb AU): most reviewed

Life Extension’s Neuro-Mag is the most reviewed product on this list, with a 4.8 rating from 36,112 reviews on iHerb when we checked. It is a vegetarian Magtein® capsule at the same three-capsule, 2,000 mg serve as ours.

Label facts: 90 vegetarian capsules · 3 capsules per serve · 2,000 mg Magtein® per serve · 144 mg magnesium per serve · 30 serves · $57.23 · $1.91 per serve. Other ingredients are a vegetable cellulose capsule, microcrystalline cellulose, stearic acid, silica and vegetable stearate.

At $1.91 a serve it costs 9 cents a day less than our single-bottle price. The gap is the brand name and the review count on one side, and domestic dispatch and bundle pricing on the other. As with any iHerb order, delivery time and postage depend on the option you choose at checkout.

Who it suits: vegetarians who want Magtein® in a capsule and put weight on a very large review base.

Who it doesn’t suit: anyone who wants a short ingredient list, or fast dispatch from inside Australia.

#5. Sports Research Magtein® (iHerb AU)

Sports Research also sells a three-capsule Magtein® serve at 2,000 mg, in hypromellose capsules with rice flour and rice husks as the other ingredients. The label says to take three capsules daily with food.

Label facts: 90 veggie capsules · 3 capsules per serve · 2,000 mg Magtein® per serve · 144 mg magnesium per serve · 30 serves · $61.10 · $2.04 per serve.

It costs 4 cents a serve more than our single bottle and uses a similar filler, so the choice between the two comes down to the Magtein® name against Sydney dispatch, free shipping from $100 and bundle pricing. It showed a 4.7 rating from 1,231 reviews on iHerb when we checked.

Who it suits: buyers who want a plant capsule with the Magtein® name and already shop at iHerb.

Who it doesn’t suit: anyone looking to pay less per serve, since three products above it cost less.

#6. Apollo Nutraceuticals Magnesium L-Threonate Capsules (Elite Supps): with L-theanine and apigenin

Apollo’s capsules, sold through Elite Supps, pair the full 2,000 mg of magnesium L-threonate (144 mg of elemental magnesium) with 100 mg of L-theanine and 50 mg of apigenin in each three-capsule serve. It is an Australian-owned brand, and it is the combination product in this comparison.

Label facts: 90 vegetable capsules · 3 capsules per serve · 2,000 mg magnesium L-threonate · 144 mg elemental magnesium · 100 mg L-theanine · 50 mg apigenin · 30 serves · $69.90 · $2.33 per serve. Other ingredients are magnesium stearate, microcrystalline cellulose, maltodextrin, silicon dioxide and hydroxypropyl methylcellulose, in a tapioca capsule shell.

The add-ins are the reason to buy it and also its limit. None of the magnesium L-threonate trials below tested L-theanine or apigenin alongside it, so the combination has not been studied as a product. It is also the dearest fixed serve here at $2.33, and Elite Supps charges a flat $9.90 for shipping on orders under $150.

Who it suits: evening-only users who want L-theanine and apigenin in the same capsule.

Who it doesn’t suit: anyone who wants a single active, and anyone splitting the serve for daytime focus.

#7. TCPA Magtein® (The Compounding Pharmacy of Australia): compounded strengths

The Compounding Pharmacy of Australia compounds Magtein® capsules at its pharmacy in Mosman, NSW, using a vegetarian capsule and no fillers or binders. You choose a capsule strength from 50 mg to 400 mg and a count from 50 to 200 capsules. Prices run from $66.99 (50 capsules at 50 mg) to $531.99 (200 capsules at 400 mg), and shipping is free Australia-wide.

We couldn’t put it on the per-serve scale. The page doesn’t state a serving size, and it doesn’t say whether the strength refers to the magnesium L-threonate or to the elemental magnesium, which changes the maths roughly fourteen-fold. Ask the pharmacy before you order if you want to match a trial dose.

Who it suits: people who want a pharmacist-compounded capsule with no excipients and are happy to confirm the dose by phone.

Who it doesn’t suit: anyone comparing on cost per serve, since the numbers you need aren’t on the page.

Also considered

Designs for Health Magnesium Threonate is listed as practitioner-only at Natural Chemist, where the price shows only to authorised members, so we couldn’t rank it on cost. The listing says each 1 g scoop is equivalent to at least 76 mg of magnesium in a 60 g tub. That scoop matches the daily dose in the 2024 sleep trial and is half the 2,000 mg serve.

Pharmacy chains move their range often. For what the big pharmacy chains carry and how their prices compare, see our magnesium threonate Chemist Warehouse comparison.

Compound weight or elemental magnesium: how to read a threonate label

Two numbers sit on a good magnesium L-threonate label, and they measure different things. The big one (2,000 mg) is the weight of the whole compound, magnesium plus threonate. The small one (144 mg on our label) is the magnesium itself. Trials report the compound weight, so that is the number to match against a study. The elemental number is the one to add up against your daily intake.

Australia’s Nutrient Reference Values put the recommended daily intake at 400 mg for men aged 19 to 30 and 420 mg from 31, and at 310 mg for women aged 19 to 30 and 320 mg from 31. The upper level for magnesium taken as a supplement is 350 mg a day for adults. Food magnesium doesn’t count towards that supplement limit.

A 2,000 mg serve of magnesium L-threonate adds 144 mg to 147 mg of supplemental magnesium. If you also take a glycinate at night or a multivitamin that contains magnesium, add the elemental figures from each label. That sum only works for products that print the elemental number, which is one reason we weight it in this comparison. Our guide to magnesium L-threonate side effects covers what happens when intake runs high.

The compound weight also explains the price. At about 7.2% magnesium by weight, magnesium L-threonate needs 2,000 mg of raw material to deliver 144 mg of magnesium. Cheaper forms deliver the same magnesium from far less input. You are paying for the threonate carrier and the brain research behind it, not for more magnesium.

What the human trials used, and what they didn’t show

The research on magnesium L-threonate is small, recent and mostly linked to the companies that make the ingredient. It is still worth knowing in detail, because the doses differ by outcome and the dose you want decides which product fits.

Rats, 2010. The form was first described by Slutsky and colleagues at MIT, published in Neuron. In rats, magnesium L-threonate raised brain magnesium and improved learning and memory tests, including in aged rats. This is animal work. It explains why the form was developed, and it is not evidence that the same happens in people.

Cognition, 2016. Liu and colleagues ran a randomised, double-blind, placebo-controlled trial in 44 adults aged 50 to 70. At entry they reported memory and concentration complaints, with poor sleep and raised anxiety scores. Twenty-three took MMFS-01, a magnesium L-threonate compound, and 21 took placebo, for 12 weeks. The dose was set at about 25 mg per kg of body weight, which meant 1.5 g a day for people weighing 50 to 70 kg and 2 g a day for people weighing 70 to 100 kg.

Overall cognitive ability, a composite of tests across four domains, improved against placebo (p = 0.003, Cohen’s d = 0.91), with the clearest change in executive function. The effects on sleep and anxiety could not be determined because the placebo group also improved strongly on those measures. The study was funded by Neurocentria, the company behind the compound, and the lead author works there.

Sleep, 2024. Hausenblas and colleagues gave 80 adults aged 35 to 55, all reporting sleep problems, either 1 g a day of magnesium L-threonate or placebo for 21 days. Measured with an Oura ring, the magnesium group scored better than placebo on deep sleep score, REM sleep score and light sleep time (p < 0.05). On questionnaires they also reported better mood, energy, daytime productivity and mental alertness. The authors described it as safe and well tolerated. Three of the six authors work for AIDP, the ingredient company that holds the paper’s copyright.

Memory in healthy adults, 2022. Zhang and colleagues gave 109 healthy Chinese adults aged 18 to 65 either Magtein®PS or placebo at 2 g a day for 30 days. Magtein®PS is a formula of magnesium L-threonate with phosphatidylserine and vitamins C and D, so this trial tested a blend rather than magnesium L-threonate alone. The supplement group improved on all five parts of a standard memory test and on the overall memory score, and older participants improved more than younger ones.

So 1 g a day for 21 days is the sleep protocol, and 1.5 g to 2 g a day for 12 weeks is the cognition protocol. Our three-capsule serve gives 2,000 mg, and the label’s evening timing for sleep uses the full serve, which is more than the sleep trial used.

What hasn’t been shown:

• None of the trials above ran longer than 12 weeks, and the largest had 109 people.
• No trial tested any product on this page. They tested the ingredient.
• The rise in brain magnesium was measured in rats. The 2016 human trial used red blood cell magnesium as a marker instead.
• None of these trials compared magnesium L-threonate with magnesium glycinate, so there is no direct evidence that one beats the other for sleep.
• Each human trial above has a commercial link to the ingredient or its developer.

Our longer write-up on magnesium L-threonate dose and evidence in Australia goes through each outcome measure in more detail.

Get the 2,000mg serve in capsules · $59.99

How to choose magnesium L-threonate

Six checks cover most of the decision:

1. Match the dose to your goal. The sleep trial used 1 g a day. The cognition trial used 1.5 g to 2 g a day. A 2,000 mg serve covers both, and a powder or a split serve lets you go lower.
2. Look for the elemental figure. A label that prints it (144 mg or 147 mg per 2,000 mg serve) lets you total your magnesium from every source.
3. Price the serve, not the bottle. Divide the price by the number of serves. In this table the per-serve cost ranges from $1.67 to $2.33 on a single purchase.
4. Pick your format. Capsules travel and dose exactly. Powder costs a little less per serve and suits people who dislike swallowing three capsules.
5. Read the other ingredients. Gelatine capsules rule out vegetarians. Added actives such as L-theanine change what you are taking.
6. Check delivery. A product dispatched from inside Australia arrives sooner than an overseas order. Among the Australian sellers here, free shipping starts at $100 (Eternal Elixir) or $150 (Switch Nutrition and Elite Supps), and TCPA ships free on every order.

Is there a downside to taking magnesium L-threonate?

The main downside is cost. Per milligram of magnesium it is one of the dearest forms you can buy, because most of what you pay for is the threonate carrier.

On tolerability, the two main human trials reported few problems. In the 2016 trial, adverse events were more common in the placebo group than in the magnesium group (30 events against 17), most were mild, and none was serious. The 2024 sleep trial described the supplement as safe and well tolerated over 21 days.

Some people should check with a doctor first. Do not use it if you are pregnant or breastfeeding unless your doctor advises it, and talk to your doctor if you have a kidney condition, because the kidneys clear magnesium. Magnesium can interact with some antibiotics, bisphosphonates and diuretics, so ask your pharmacist if you take any prescription medicine. Our label says the product is intended for adults, and Switch Nutrition’s says Mag3 is not intended for children under 15.

Frequently asked questions

Which brand of magnesium L-threonate is best?

Our pick is Eternal Elixir Magnesium L-Threonate 2000mg: the full 2,000 mg in three capsules, about 144 mg of elemental magnesium stated on the label, 90 capsules for $59.99 and dispatch from Sydney within 24 hours. Other brands win on narrower points. Switch Nutrition Mag3 has the lowest price per serve at $1.67, Source Naturals Magtein® is the cheapest capsule serve at $1.78, and Life Extension Neuro-Mag has the most reviews.

Add Magnesium L-Threonate to cart · $59.99

Is there a downside to taking magnesium L-threonate?

Cost is the main one, since you pay for a lot of carrier to get 144 mg of magnesium. In the two main trials, side effects were few and mild. Check with your doctor first if you are pregnant or breastfeeding, have a kidney condition or take antibiotics, bisphosphonates or diuretics.

Can I buy magnesium L-threonate capsules in Australia?

Yes. Eternal Elixir ships its 90-capsule bottle from Sydney within 24 hours, with free shipping over $100. Apollo capsules are sold through Elite Supps, The Compounding Pharmacy of Australia compounds Magtein® capsules in Mosman, and iHerb Australia sells imported brands such as Life Extension, Sports Research and Source Naturals. Switch Nutrition sells an Australian powder.

Order from Sydney · $59.99

How do I choose a magnesium L-threonate supplement?

Start with the dose you want to match (1 g a day in the sleep trial, 1.5 g to 2 g in the cognition trial). Then check that the label states the elemental magnesium, work out the cost per serve rather than per bottle, and read the other ingredients for gelatine or added actives. Last, check whether it ships from inside Australia.

What is magnesium threonate best for?

People choose it for brain-related goals: memory, focus and sleep quality. It is the form developed to raise magnesium inside the brain, which was shown in rats. For muscle relaxation or general magnesium intake, cheaper forms such as glycinate or citrate cost far less per milligram of magnesium.

Is magnesium glycinate better than threonate?

They suit different jobs. Glycinate is gentle on the stomach, much cheaper per milligram of magnesium and a sensible default for general intake and evening use. Threonate is the form studied for brain magnesium and is chosen for cognitive goals. None of the trials in this guide compared the two directly.

Should you take magnesium threonate every day?

The trials used daily dosing: 21 days in a row in the sleep trial and 12 weeks in the cognition trial, with changes building over weeks. If you take other magnesium supplements, add the elemental figures from every label and keep the total from supplements within 350 mg a day unless your doctor advises otherwise.

How much magnesium L-threonate should I take for sleep?

The 2024 sleep trial used 1 g a day for 21 days, which is half of a 2,000 mg serve. Our label suggests the full three-capsule serve in the evening for sleep. Follow the directions on the product you buy, and ask your doctor or pharmacist what suits you if you take any medicine.

Why does magnesium L-threonate cost more than other magnesium?

Because you pay for compound weight. At about 7.2% magnesium, it takes 2,000 mg of magnesium L-threonate to deliver 144 mg of magnesium, and the threonate raw material costs more than the carriers in glycinate or citrate. The premium buys the form studied for brain magnesium, not more magnesium.

The verdict

Our pick: Eternal Elixir Magnesium L-Threonate 2000mg. You get the full 2,000 mg in three capsules with the elemental magnesium on the label, 90 capsules for 30 days at $2.00 a serve, and $1.60 a serve on five bottles. It ships from Sydney within 24 hours and ships free over $100.

If you want the lowest price per serve and don’t mind powder: Switch Nutrition Mag3 at $1.67 a serve, with Magtein® as the only ingredient.

If you want the cheapest capsule serve and can wait for an iHerb order: Source Naturals Magtein® at $1.78 a serve, in gelatine capsules.

If a big review base matters most: Life Extension Neuro-Mag, at $1.91 a serve.

If you want L-theanine and apigenin in the same capsule: Apollo Nutraceuticals through Elite Supps, at $2.33 a serve.

If sleep is your only goal, remember that the sleep trial used 1 g a day. And if you are building a wider routine, one order covers more than magnesium. Our round-ups of the best saffron supplements in Australia and the best NMN supplements in Australia compare the next pieces on the same terms, and the research behind saffron is summarised in our guide to saffron supplement benefits.

More buying guides

• Best nootropic supplements in Australia, compared on cost and dose
• Our Australian nootropics guide: how the categories fit together
• Best shilajit supplements in Australia
• All supplement guides and the full Eternal Elixir blog
• Shop the full Eternal Elixir range or return to the Eternal Elixir home page

Sources

1. Liu G, Weinger JG, Lu ZL, Xue F, Sadeghpour S. Efficacy and safety of MMFS-01, a synapse density enhancer, for treating cognitive impairment in older adults: a randomized, double-blind, placebo-controlled trial. Journal of Alzheimer’s Disease. 2016;49(4):971-990. PubMed 26519439 (full text: PMC4927823)
2. Hausenblas HA, Lynch T, Hooper S, Shrestha A, Rosendale D, Gu J. Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: a randomized controlled trial. Sleep Medicine: X. 2024;8:100121. PubMed 39252819
3. Zhang C, Hu Q, Li S, et al. A Magtein®, magnesium L-threonate, -based formula improves brain cognitive functions in healthy Chinese adults. Nutrients. 2022;14(24):5235. PubMed 36558392
4. Slutsky I, Abumaria N, Wu LJ, et al. Enhancement of learning and memory by elevating brain magnesium. Neuron. 2010;65(2):165-177. PubMed 20152124
5. Nutrient Reference Values for Australia and New Zealand: magnesium. eatforhealth.gov.au
6. Product listings read on 25 September 2026: Eternal Elixir Magnesium L-Threonate 2000mg, Switch Nutrition Mag3, iHerb Australia magnesium L-threonate range, Apollo Nutraceuticals at Elite Supps, TCPA Magtein®, Designs for Health at Natural Chemist