Life Extension Australia 2026: Neuro-Mag, Saffron and TMG Compared

Last updated: October 16, 2026 · By Eternal Elixir Editorial

Last updated: October 16, 2026 · By Eternal Elixir Editorial · 8 products compared

You have read about Neuro-Mag or Life Extension TMG on a US forum, you search Life Extension Australia, and Google hands you iHerb listings, an Amazon page and an eBay seller. None of them tells you which products actually reach Australian shelves, what they cost here in dollars, or whether a locally shipped bottle does the same job for less. This guide answers those three questions for the Life Extension Australia buyer, using prices read from live retailer pages on 16 October 2026.

We looked at the Life Extension range held in stock by an Australian retailer and found three products that line up directly with ingredients Eternal Elixir sells: Neuro-Mag (magnesium L-threonate, as capsules and as a drink powder), Optimized Saffron and TMG (capsules and powder). That gives eight products in total: five Life Extension listings and three Eternal Elixir bottles. Eternal Elixir makes three of the products on this list; they are our picks, and every figure for the Life Extension products is taken from their own labels and the retailer’s product pages.

Life Extension Australia: The 8 Products Side by Side

The table below puts every product on the same footing. Prices are the current Australian dollar prices on each product page. Cost per serve divides the price by the number of label serves in the pack; for TMG we also show cost per gram, because the two Life Extension TMG formats use different serving sizes.

Which Life Extension Products Can You Buy in Australia?

Life Extension is an American brand, and most of its range reaches Australia as imported stock through online marketplaces. The Australian retailer Supplement City lists a smaller selection on its Life Extension brand page, including the five products in this comparison plus items such as Two-Per-Day multivitamin, Optimized Quercetin, Curcumin Elite, Herbal Sleep PM and Quick Brain. Several of those sit outside the ingredients Eternal Elixir makes, so we have left them out rather than force a comparison.

Life Extension is also known for resveratrol and nicotinamide riboside products, which the Australian retailer did not list on the day we checked. If those are what you were after, Eternal Elixir sells Trans-Resveratrol 1200mg and Nicotinamide Riboside capsules, both in stock and shipped from Sydney.

The Life Extension Australia search results also surface international marketplaces. Those listings can work, but prices move with the exchange rate and delivery times vary by seller, so we have not ranked them here. If you already buy through a marketplace, divide what your bottle costs you landed in Australia by its serves and compare it with the table.

For a wider view of the local market, our ranking of the top Australian supplement brands compares ten brands made or based here, and our NOW Foods alternatives guide runs the same exercise for another popular US label.

Label Dose vs Trial Dose: The Check Most Buyers Skip

Every ingredient in this comparison has at least one placebo-controlled human trial behind it. What those trials can tell you depends on whether the product in your hand delivers the amount that was studied. We lined up each product’s label against the trial that used its ingredient or extract.

The saffron row is the one to read twice. affron® and Satiereal® are both extracts of saffron stigma, yet they were tested for different outcomes: affron® for mood, stress and sleep quality, Satiereal® for snacking frequency and fullness. Swapping one for the other means stepping outside the research that made you want saffron in the first place. Our explainer on what the affron® extract is covers the standardisation in more detail.

For magnesium L-threonate, the 21-day sleep trial used 1 g a day while both brands print a 2,000 mg serve, so one bottle covers the trial protocol about three times over. If you are new to the form, our magnesium L-threonate dosage guide explains how people usually build up to the full serve.

#1. Eternal Elixir Magnesium L-Threonate 2000mg — Best for most Australians comparing Neuro-Mag

Eternal Elixir Magnesium L-Threonate 2000mg is the closest local match to Life Extension Neuro-Mag. Both deliver 2,000 mg of magnesium L-threonate in a three-capsule serve and both bottles hold 30 serves. The difference is the price: $59.99 for the Eternal Elixir bottle against $89.95 for Neuro-Mag capsules at the Australian retailer, which works out to $2.00 a serve against $3.00.

Magnesium L-threonate is the form chosen when the goal is the brain and sleep rather than muscle cramps or digestion. In a study in rats, raising brain magnesium with magnesium L-threonate improved learning and working memory and increased synapse density in the hippocampus (Slutsky and colleagues, Neuron, 2010). That is animal research, so read it as the mechanism behind the interest. The human evidence most relevant to everyday buyers comes from a 21-day randomised, placebo-controlled trial in 80 adults aged 35 to 55 with self-reported sleep problems: 1 g a day of magnesium L-threonate improved deep sleep and REM sleep scores measured by an Oura ring, along with morning mood, energy and alertness ratings, compared with placebo (Hausenblas and colleagues, Sleep medicine: X, 2024).

If you are weighing this form against the magnesium you already take, our comparison of magnesium L-threonate vs glycinate sets out where each one fits.

Key specs: 2,000 mg magnesium L-threonate per three-capsule serve · 90 capsules · 30 serves · $59.99 AUD · third-party tested · ships from Sydney.

Pros:

• Same 2,000 mg serve as Neuro-Mag at two-thirds of the capsule price
• Lowest cost per 2,000 mg serve of the three threonate products here
• Free shipping over $100, so it pairs well with saffron or TMG in one order

Cons:

• Three capsules a serve, which some people split between afternoon and evening
• No powder version if you prefer to drink your magnesium

Best for: anyone who would otherwise import Neuro-Mag and wants the same serve shipped within Australia.

Price and where to buy: $59.99 AUD. Buy Eternal Elixir Magnesium L-Threonate.

#2. Eternal Elixir Saffron Extract 30mg (affron®) — Best for mood support at the studied dose

Eternal Elixir Saffron Extract 30mg uses affron®, a saffron stigma extract standardised to 3.5% Lepticrosalides®. One capsule gives 30 mg, and the bottle holds 90 capsules, so a single $49.99 purchase covers three months at $0.56 a day.

The research behind affron® has an Australian thread. A four-week, double-blind trial led by researchers at the University of Southern Queensland gave 128 adults reporting low mood either 22 mg or 28 mg of affron® a day, or placebo. At 28 mg a day, negative mood and stress-related scores fell significantly against placebo; the 22 mg arm showed no effect (Kell and colleagues, Complementary therapies in medicine, 2017). In a separate 28-day trial in 63 adults with self-reported poor sleep, 14 mg of affron® twice daily improved sleep quality ratings compared with placebo (Lopresti and colleagues, Journal of clinical sleep medicine, 2020).

That dose pattern is why the 30 mg capsule matters: the lower amount in the mood trial did nothing measurable, and the effective amount sits just under one Eternal Elixir capsule. For a fuller picture of how saffron may support a steadier mood, read our guide to saffron for mood and stress.

Key specs: 30 mg affron® per capsule · 90 capsules · 90 daily serves · $49.99 AUD · third-party tested.

Pros:

• Matches the 28 mg daily amount from the mood trial within 2 mg
• About a quarter of the daily cost of Life Extension Optimized Saffron
• One capsule a day, three months per bottle

Cons:

• A different extract from Life Extension’s, so it suits mood and sleep goals more than appetite goals
• Effects in the trials were measured over four weeks, so it asks for some patience

Best for: people who want saffron for mood, stress resilience or sleep quality at the dose those trials used.

Price and where to buy: $49.99 AUD. Order Eternal Elixir Saffron Extract.

#3. Eternal Elixir TMG 2000mg — Best for the lowest TMG cost per gram

Eternal Elixir TMG 2000mg supplies 2,000 mg of betaine anhydrous in three capsules, 30 serves per bottle, for $44.99. Measured per gram of TMG, that is $0.75, below both Life Extension formats: $0.80 a gram for the powder and $1.30 a gram for the capsules.

TMG, also called trimethylglycine or betaine, donates methyl groups that convert homocysteine back into methionine. The best-known dose study gave 76 healthy adults 1.5 g, 3 g or 6 g of betaine a day, or placebo, for six weeks. Fasting homocysteine ended 12%, 15% and 20% lower than placebo in the three groups, and the rise after a methionine load was also smaller (Olthof and colleagues, The Journal of nutrition, 2003). A 2,000 mg serve sits between the two lower arms of that study.

Our guide on how to lower homocysteine naturally covers the diet and B-vitamin side of the picture, which matters as much as any supplement.

Key specs: 2,000 mg betaine anhydrous per three-capsule serve · 90 capsules · 30 serves · $44.99 AUD · third-party tested.

Pros:

• Lowest cost per gram of TMG in this comparison
• Label serve lands inside the dose range studied for homocysteine
• Capsules need no measuring or mixing

Cons:

• Three capsules a serve; a powder is easier for doses above 3 g
• Fixed 667 mg capsules make very small doses harder to set

Best for: Life Extension TMG users who want a 2 g daily serve without counting scoops.

Price and where to buy: $44.99 AUD. Try Eternal Elixir TMG 2000mg.

#4. Life Extension Neuro-Mag Capsules — Best for buyers who want the Life Extension label itself

Life Extension Neuro-Mag is the product most people mean when they search for Life Extension Australia stock. Each three-capsule serve gives 2,000 mg of Magtein® magnesium L-threonate, which the label lists as 144 mg of elemental magnesium, and the bottle holds 30 serves. The Australian retailer price is $89.95, or $3.00 a serve.

Magtein® is a branded magnesium L-threonate ingredient, and the Life Extension label states it plainly, which some buyers value. The dose is identical to the Eternal Elixir capsule, so the research above applies equally to both; the choice comes down to brand preference and price. The label also notes this form has less of a laxative effect than other forms of magnesium.

Key specs: 2,000 mg Magtein® per three-capsule serve · 30 serves · $89.95 AUD at an Australian retailer.

Pros:

• Branded Magtein® named on the label
• Held in stock by an Australian retailer, so no international wait

Cons:

• $1.00 more per serve than the Eternal Elixir bottle with the same dose
• The highest cost per serve of the three threonate products here

Best for: loyal Life Extension users who prefer to stay with the brand.

Price and where to buy: $89.95 AUD at Supplement City.

#5. Life Extension Neuro-Mag Powder 93g — Best for people who prefer a drink to capsules

Life Extension Neuro-Mag Powder puts the same 2,000 mg of Magtein® into a 3.11 g scoop that you mix with water or juice. The 93 g tub gives 30 serves for $79.95, which is $2.67 a serve: cheaper than the Neuro-Mag capsules, still dearer than the Eternal Elixir bottle.

The powder suits people who dislike swallowing three capsules, and it makes half serves easy, which is handy if you want to start at the 1 g amount used in the sleep trial. The ingredient list includes citric acid, gum acacia, maltodextrin and natural flavours, so check the label if you avoid any of those. If magnesium for sleep is your main goal, our guide to magnesium L-threonate for sleep walks through timing and what the trials measured.

Key specs: 2,000 mg Magtein® per 3.11 g scoop · 30 serves · $79.95 AUD at an Australian retailer.

Pros:

• Easy to split into smaller amounts
• Cheaper per serve than the capsule version of Neuro-Mag

Cons:

• Contains flavourings and maltodextrin that capsules do not need
• Less convenient to carry than a capsule bottle

Best for: people who would rather drink their evening magnesium.

Price and where to buy: $79.95 AUD at Supplement City.

#6. Life Extension Optimized Saffron — Best for the Satiereal® extract studied for snacking

Life Extension Optimized Saffron contains Satiereal®, a saffron stigma extract standardised to 0.3% safranal, at 78 mg per capsule. The label directs one capsule in the morning and one in the evening with food, so a 60-capsule bottle lasts 30 days and costs $68.95, or $2.30 a day.

Satiereal® has its own trial, and it measured something different from affron®. In an eight-week, placebo-controlled study, 60 mildly overweight but healthy women took one capsule twice a day, a total of 176.5 mg of extract. The Satiereal® group reported fewer snacking episodes than placebo and the researchers described a satiating effect (Gout and colleagues, Nutrition research, 2010). The Life Extension label gives 156 mg a day, about 88% of that amount.

So the question to ask is what you want saffron for. If your aim is fewer between-meal cravings, this is the extract with that research. If your aim is mood or sleep quality, the affron® trials are the relevant ones, and our side-by-side of saffron gummies vs capsules shows how much the extract and dose vary across the products sold here.

Key specs: 78 mg Satiereal® per capsule · 2 capsules a day · 60 capsules · $68.95 AUD at an Australian retailer.

Pros:

• Uses the extract tested for snacking frequency and fullness
• Clear twice-daily directions on the label

Cons:

• Daily amount sits below the 176.5 mg used in its own trial
• About four times the daily cost of the affron® capsule

Best for: people specifically interested in saffron for appetite and snacking habits.

Price and where to buy: $68.95 AUD at Supplement City.

#7. Life Extension TMG Capsules — Best for a lighter 1,000 mg daily serve

Life Extension TMG capsules give 1,000 mg of TMG in a two-capsule serve, 30 serves per 60-capsule bottle, for $38.95. That is the lowest bottle price on this list, yet per gram of TMG it is the most expensive option at $1.30.

The smaller serve is the main reason to choose it. If you take TMG mainly alongside other methyl donors, or a practitioner has suggested 1 g a day, two capsules is simple. To reach the 1.5 g that was the lowest effective amount in the six-week homocysteine study, you would take three capsules, and the bottle then lasts 20 days. Our article on TMG powder vs capsules compares the two formats in more depth.

Key specs: 1,000 mg TMG (as betaine anhydrous) per two-capsule serve · 60 capsules · 30 serves · $38.95 AUD at an Australian retailer.

Pros:

• Lowest upfront price of the eight products
• Small serve suits people building up slowly

Cons:

• Highest cost per gram of TMG in this comparison
• Label serve falls below the lowest dose in the 2003 trial

Best for: people who want 1 g of TMG a day and no more.

Price and where to buy: $38.95 AUD at Supplement City.

#8. Life Extension TMG Powder 50g — Best for adjusting the dose scoop by scoop

Life Extension TMG Powder is pure betaine anhydrous with no other ingredients. The 50 g tub holds 97 serves of 500 mg, and at $38.95 that comes to $0.80 per gram of TMG, a few cents above the Eternal Elixir capsules.

A 500 mg scoop is small, so most people following the trial doses would take three or four scoops a day, which uses the tub up in about a month. The benefit is control: you can move from 1.5 g to 3 g without buying a different product. Anyone comparing TMG products across more brands will find a wider list in our Australian TMG comparison.

Key specs: 500 mg TMG per 525 mg scoop · 97 serves · $38.95 AUD at an Australian retailer.

Pros:

• Nothing added beyond betaine anhydrous
• Close to the lowest cost per gram here

Cons:

• Several scoops needed to reach the studied doses
• Powder needs measuring and mixing each day

Best for: people who change their TMG dose often.

Price and where to buy: $38.95 AUD at Supplement City.

How We Evaluated These Life Extension Alternatives

We started from the Life Extension products an Australian retailer had in stock on 16 October 2026 and kept only those that share an active ingredient with an Eternal Elixir product. Each product was then scored on five criteria:

• Quality and purity (30%): a named, standardised extract or ingredient on the label, and third-party testing where the maker holds it. Eternal Elixir holds third-party certificates of analysis for its own products; we did not test the Life Extension products.
• Australian availability and shipping (20%): stocked in Australia today, with local dispatch.
• Price per dose in AUD (20%): live price divided by label serves, and per gram where serving sizes differ.
• Range for stacking (15%): whether the same store sells the other ingredients people commonly pair with it.
• Research fit (15%): how closely the label dose matches the dose used in the extract’s own published trials, which takes the place of customer reviews in this comparison because the Life Extension retailer pages showed none.

Eternal Elixir products take the top three places because they match or beat the Life Extension equivalent on price per dose and research fit while shipping from Sydney. The Life Extension products keep the narrower labels they genuinely earn, such as the Satiereal® extract for snacking and the flexible TMG powder.

Matching Each Life Extension Product to an Australian Alternative

If you already use Life Extension and want a like-for-like swap, here is the short version.

• Neuro-Mag capsules or powder: switch to Eternal Elixir Magnesium L-Threonate 2000mg for the same serve at a lower cost per serve. Many people take it in the evening; the trial that measured deep and REM sleep used a once-daily dose, and our explainer on REM sleep vs deep sleep explains what those two scores mean.
• Optimized Saffron: the swap depends on your goal. For mood or sleep quality, the affron® capsule follows the trials for those outcomes. For snacking, Satiereal® is the extract with that evidence.
• TMG capsules or powder: Eternal Elixir TMG 2000mg gives a full 2 g serve at the lowest cost per gram, or stay with the powder if you like adjusting by the scoop.

Many readers combine two of these. Our guide to magnesium L-threonate brands in Australia compares more threonate products if Neuro-Mag is your main interest. As with any supplement, speak with your GP or pharmacist first if you take prescription medicines, are pregnant or breastfeeding, or manage a health condition.

Life Extension Australia: Frequently Asked Questions

Can you buy Life Extension supplements in Australia?

Yes. An Australian retailer, Supplement City, keeps a selection of Life Extension products in stock, including Neuro-Mag capsules and powder, Optimized Saffron and TMG capsules and powder, and more of the range is sold through international marketplaces. Prices on 16 October 2026 ranged from $38.95 for TMG to $89.95 for Neuro-Mag capsules.

What is the best Life Extension alternative in Australia?

For Neuro-Mag, Eternal Elixir Magnesium L-Threonate 2000mg is our top pick: it gives the same 2,000 mg serve of magnesium L-threonate for $2.00 a serve against $3.00, and ships from Sydney. For saffron and TMG, Eternal Elixir Saffron Extract 30mg and TMG 2000mg are also lower in cost per serve than the Life Extension versions.

Is Life Extension Neuro-Mag the same as magnesium L-threonate?

Neuro-Mag is Life Extension’s brand name for Magtein® magnesium L-threonate. Each three-capsule serve gives 2,000 mg of magnesium L-threonate, which the label lists as 144 mg of elemental magnesium. Any product with 2,000 mg of magnesium L-threonate per serve delivers the same compound.

Is Life Extension Optimized Saffron the same as affron®?

No. Optimized Saffron uses Satiereal®, an extract standardised to 0.3% safranal and studied for snacking frequency and fullness at 176.5 mg a day. affron® is standardised to 3.5% Lepticrosalides® and was studied for mood, stress and sleep quality at 28 mg a day. They are both saffron stigma extracts but are not interchangeable.

How much TMG should you take a day?

Labels in Australia range from 500 mg to 2,000 mg per serve. In a six-week trial in healthy adults, 1.5 g, 3 g and 6 g of betaine a day all lowered fasting homocysteine compared with placebo, by 12% to 20%. A 2 g daily serve sits inside that studied range. Check with your doctor before taking TMG with prescription medicines.

Is TMG powder cheaper than TMG capsules?

It depends on the brand. Life Extension TMG Powder costs $0.80 per gram against $1.30 per gram for Life Extension TMG capsules, so the powder is much cheaper within that brand. Eternal Elixir TMG 2000mg capsules work out at $0.75 per gram, slightly below the Life Extension powder.

Is Life Extension an Australian company?

No. Life Extension is an American supplement brand, and the products sold here are imported. If you prefer a brand that ships from within Australia, Eternal Elixir dispatches from Sydney and offers free shipping on orders over $100.

Verdict: Which Life Extension Alternative Should You Buy in Australia?

For most readers searching Life Extension Australia stock, the decision comes down to which ingredient you want.

• Want Neuro-Mag? Eternal Elixir Magnesium L-Threonate 2000mg gives the same 2,000 mg serve at $2.00 instead of $3.00 and is our overall pick.
• Want saffron for mood or sleep? Eternal Elixir Saffron Extract 30mg matches the affron® dose from the trials at $0.56 a day.
• Want saffron for snacking? Life Extension Optimized Saffron carries the Satiereal® extract studied for that purpose.
• Want TMG? Eternal Elixir TMG 2000mg is the lowest cost per gram, and Life Extension TMG Powder suits people who adjust their dose often.

Whichever you choose, compare products on dose per serve and cost per serve rather than bottle price. The cheapest bottle on this list turned out to be the most expensive way to buy TMG.