Magnesium L-Threonate Coles vs Woolworths Stock Check (2026)

Last updated: October 23, 2026 · By Eternal Elixir Editorial

Last updated: October 23, 2026 · By Eternal Elixir Editorial · 9 products compared

On 23 October 2026 we typed the same searches into coles.com.au and woolworths.com.au: magnesium threonate, magnesium L-threonate, TUDCA, tongkat ali and shilajit. Coles returned zero results for three of the four ingredients. Woolworths returned listings for all four, but every one of them was an Everyday Market item shipped by a third-party seller, none from the Woolworths shelf range. If you searched magnesium L-threonate Coles or Woolworths hoping to add a bottle to the weekly shop, this page shows exactly what came up, what each listing costs per serve, and where Eternal Elixir fits.

Magnesium L-Threonate Coles and Woolworths: What We Found

The short version: magnesium L-threonate is a specialist form, and the supermarkets have not ranged it. The magnesium L-threonate Coles search returned “0 results”. A search for “magnesium l-threonate” on Coles returned one product, a Swisse magnesium glycinate with L-theanine at $19.75, which is a different form of magnesium altogether. Woolworths showed one threonate product, Switch Nutrition Mag3 powder at $44.57, sold and shipped by Healthylife through Everyday Market.

The other three ingredients follow the same pattern. Coles has no TUDCA (its search engine offered “tuscan” instead) and no tongkat ali. Its only shilajit is Wanderlust Powder Shilajit 50 g at $51.00. Woolworths lists two TUDCA products, two tongkat ali capsules and several shilajit products, all from Everyday Market sellers. That matters for delivery, returns and minimum spends, which we cover further down.

Eternal Elixir makes four of the products ranked below; they are our picks, and every figure for the other products is taken from their own labels, retailer pages and brand stores. Prices were read on 23 October 2026 and supermarket listings change often, so check the live page before you order. For the full background on the mineral itself, our magnesium L-threonate guide for Australians covers forms, research and dosing in depth.

Supermarket Stock Map, 23 October 2026

This is the original data behind this page: one row per search, showing what each retailer returned and who actually sells it. “Shelf range” means a product Woolworths or Coles stocks itself. “Everyday Market” means a third-party seller listing on woolworths.com.au.

Beyond the magnesium L-threonate Coles gap, two practical points stand out. The same Wanderlust shilajit powder costs $51.00 on Coles and $40.02 through Woolworths Everyday Market, a $10.98 gap for an identical 50 g jar. And none of the Woolworths items can be picked up with your groceries: Everyday Market orders ship separately from the seller.

Comparison Table: 9 Options Ranked

Prices are normalised to the label’s own serve. Where a label does not state a dose per capsule or a serving size, we say so instead of guessing.

#1. Eternal Elixir Magnesium L-Threonate 2000mg — Best for threonate in capsules

A magnesium L-threonate Coles search comes back empty and Woolworths only lists a marketplace powder, so the real choice is between a marketplace powder and a dedicated capsule. Eternal Elixir Magnesium L-Threonate 2000mg comes in a 90-capsule bottle with a label serve of three capsules (2,000 mg of magnesium L-threonate), which works out to 30 serves and $2.00 per serve at $59.99.

The capsule format is the main practical difference against the Woolworths powder. You do not need a scoop, a glass of water or a “heaped” measure, and the dose is the same every day. Many people take magnesium L-threonate in the evening as part of a wind-down routine; our magnesium L-threonate dosage guide explains how the three-capsule serve is usually split, and the magnesium L-threonate for sleep article covers the evening timing question.

Why threonate rather than the glycinate you can pick up at Coles for under $20? Magnesium L-threonate was developed by researchers studying brain magnesium, and the human trial evidence for it centres on memory and mental performance rather than muscles. The glycinate on the Coles shelf is a good everyday magnesium, but it is a different product for a different job. Our guide to the types of magnesium lays out which form suits which goal.

Key specs: 2,000 mg magnesium L-threonate per three-capsule serve · 90 capsules · 30 serves · $59.99 AUD · in stock on 23 October 2026.

Pros:

• Measured 2,000 mg serve with no scooping
• Ships from within Australia; free shipping over $100
• Every batch third-party lab tested, COA on request
• Pairs with other Eternal Elixir formulas in one order

Cons:

• $2.00 per serve, more than the Switch powder’s $1.49
• Three capsules per serve
• Not available in Coles or Woolworths stores

Best for: anyone who searched for magnesium L-threonate at the supermarket and wants a capsule with a fixed daily dose. View Eternal Elixir Magnesium L-Threonate →

#2. Eternal Elixir TUDCA 500mg — Best for liver health support

TUDCA is a bile acid that people take to support liver health and bile flow, and it is a long way from mainstream supermarket territory. Coles has none. Woolworths shows two marketplace bottles, both at 250 mg per capsule. Eternal Elixir TUDCA 500mg carries twice that per capsule, with a label serve of one capsule daily with a meal, so a 90-capsule bottle lasts 90 days.

That arithmetic is what puts it at the top of the TUDCA options here. At $59.99 for 90 serves of 500 mg, the cost is $0.67 per 500 mg. The Emrald Labs bottle on Woolworths costs $1.40 for the same 500 mg (two of its capsules), and the Switch Nutrition bottle costs $2.08. If you take 250 mg, a half-strength day, the Eternal Elixir bottle still comes out lowest per milligram.

Two of our existing articles go further on this ingredient. TUDCA at Chemist Warehouse covers the pharmacy side of the same question, and TUDCA side effects covers tolerance and who should talk to a GP first. For a ranked view of every TUDCA brand sold in Australia, see our TUDCA supplement comparison.

Key specs: 500 mg TUDCA per capsule · 1 capsule per serve · 90 capsules · $59.99 AUD · in stock.

Pros:

• Lowest cost per 500 mg of TUDCA in this comparison ($0.67)
• One capsule a day; a bottle lasts three months
• Stacks with Eternal Elixir Reduced L-Glutathione for a liver-focused routine

Cons:

• Higher upfront bottle price than the $41.95 Emrald Labs bottle
• No 250 mg option for people who want a smaller capsule

Best for: anyone who wants the most TUDCA per dollar and a once-a-day routine. Order Eternal Elixir TUDCA →

#3. Eternal Elixir Tongkat Ali 200:1 — Best for value per milligram of extract

Tongkat ali is absent from Coles entirely. Woolworths shows three marketplace options: two 60-capsule bottles and a tongkat and shilajit powder blend. Eternal Elixir Tongkat Ali 200:1 is a 90-capsule bottle with a label serve of three capsules supplying 2,000 mg of 200:1 extract, 30 serves for $39.99.

Per serve it costs $1.33, which is more than the Emrald Labs bottle’s $0.90. Per 500 mg of 200:1 extract, the figure most labels can be compared on, it costs $0.33 against Emrald Labs’ $0.90. So you get roughly four times the extract per day for about 48 cents more. People who want a lower daily amount can take fewer capsules, which stretches the bottle further.

Tongkat ali is mostly used by men interested in energy, drive and healthy testosterone levels, and some women use it too. Our tongkat ali at Chemist Warehouse page answers the pharmacy version of this search, and the tongkat ali dosage guide explains how people usually start and cycle it.

Key specs: 2,000 mg 200:1 tongkat ali extract per three-capsule serve · 90 capsules · 30 serves · $39.99 AUD · in stock.

Pros:

• Lowest cost per 500 mg of 200:1 extract in this comparison ($0.33)
• Lowest bottle price of any tongkat option here
• Dose can be adjusted capsule by capsule

Cons:

• Three capsules for the full label serve
• Higher price per serve than Emrald Labs, because each serve holds four times the extract

Best for: men over 40 and anyone who wants a high-strength tongkat extract without paying marketplace prices. Try Eternal Elixir Tongkat Ali →

#4. Eternal Elixir Shilajit 1000mg — Best for a stated extract strength

Shilajit is the one ingredient here that Coles does list, but only as a 50 g powder. The Woolworths marketplace adds capsules from Eumundi Botanicals and Switch Nutrition, neither of which states milligrams per capsule in its listing. Eternal Elixir Shilajit 1000mg states its numbers on the label: 1,000 mg of 20:1 shilajit extract with 20% fulvic acid per two-capsule serve, 45 serves per 90-capsule bottle, $1.00 per serve at $44.99.

Fulvic acid content is the figure most buyers use to judge shilajit, and it is the detail missing from the supermarket listings we checked. If you are weighing powder against capsules, our shilajit resin vs capsules comparison walks through the trade-offs, and how to spot fake shilajit lists the checks worth doing on any brand.

Key specs: 1,000 mg 20:1 extract, 20% fulvic acid per two-capsule serve · 90 capsules · 45 serves · $44.99 AUD · in stock.

Pros:

• Extract ratio and fulvic acid percentage stated on the label
• Same $1.00 per day as one Eumundi capsule, with a known dose
• 45 serves per bottle

Cons:

• Capsules only; no resin option
• Not sold in Coles or Woolworths stores

Best for: shoppers who want to know exactly how much extract they take each day. Buy Eternal Elixir Shilajit →

#5. Switch Nutrition Mag3 Magnesium L-Threonate Powder — Best for the lowest price per serve

This is the only magnesium L-threonate product that appears on woolworths.com.au, and the nearest thing to a magnesium L-threonate Coles or Woolworths result. It is listed through Everyday Market and is “Sold and shipped by Healthylife”, so it arrives in its own parcel rather than with your groceries. The listing gives the direction as one heaped scoop (2,000 mg), which makes the 60 g tub 30 serves. At $44.57 that is $1.49 per serve, the lowest price per 2,000 mg serve in this comparison. Switch Nutrition’s own store lists the same tub at $49.95, so the marketplace price was the better deal on the day we checked.

The trade-off is the format. A heaped scoop is less exact than a capsule, and unflavoured threonate powder has a mineral taste that some people mix into juice to hide. Healthylife offers free delivery once your Healthylife items pass $50, and this tub alone does not reach that threshold.

Pros:

• Lowest price per 2,000 mg serve here ($1.49)
• Single ingredient, no fillers listed
• Cheaper on Woolworths than on the brand’s own store

Cons:

• Powder with a heaped-scoop measure
• Third-party seller, separate delivery; under the $50 free-delivery threshold on its own

Best for: people who are happy to measure a powder and want the lowest daily cost.

#6. Emrald Labs TUDCA 60 Capsules — Best for the lowest bottle price

Sold and shipped by Elite Supplements through Woolworths Everyday Market, this bottle holds 60 vegetarian capsules at 250 mg of TUDCA each, with one capsule per serve. At $41.95 it is the cheapest TUDCA bottle on a supermarket website, and $0.70 per 250 mg serve. Matching the 500 mg in one Eternal Elixir capsule takes two Emrald Labs capsules, which lifts the cost to $1.40 per 500 mg and empties the bottle in a month.

Elite Supplements shows its shipping fee only at checkout, so add it to the price when you compare. The second TUDCA listing on Woolworths, Switch Nutrition Tudca 60 capsules at $62.42 from Healthylife, carries 250 mg per serve according to Switch Nutrition’s own store, which works out to $2.08 per 500 mg.

Pros:

• Lowest upfront TUDCA bottle price ($41.95)
• Vegetarian capsule, single ingredient

Cons:

• 250 mg per capsule; $1.40 per 500 mg
• Shipping fee not shown until checkout

Best for: people who want a smaller 250 mg daily amount.

#7. Emrald Labs Tongkat Ali 60 Capsules — Best for the lowest price per serve

Also sold by Elite Supplements on Everyday Market, this bottle provides 500 mg of 200:1 tongkat ali extract per capsule, one capsule per serve, 60 serves for $53.95. That is $0.90 per serve, the lowest per-serve price of the tongkat options here. Its capsule is gelatin, and the listing notes it is made in a facility that also handles milk and soy, which matters for vegetarians and people with those allergies.

The Switch Nutrition tongkat ali listed by Healthylife takes a different approach: 1 g (two capsules) of root standardised to 1% eurycomanone, 30 serves for $62.42, or $2.08 per serve. The two labels measure different things (extract ratio versus eurycomanone percentage), so a straight milligram comparison between them would mislead.

Pros:

• Lowest price per tongkat serve here ($0.90)
• One capsule a day

Cons:

• A quarter of the extract per serve of the Eternal Elixir label serve
• Gelatin capsule; allergen note for milk and soy

Best for: people who want a single 500 mg capsule a day.

#8. Eumundi Botanicals Shilajit 60 Capsules — Best for a flexible routine

Listed by Healthylife on Woolworths Everyday Market for $59.95, this Australian brand describes its contents as organic shilajit extract sourced above 12,000 feet. The direction is one capsule once or twice a day with food, so the bottle lasts 30 to 60 days and costs $1.00 to $2.00 per day. The listing does not state milligrams per capsule, an extract ratio or a fulvic acid percentage, so we could not compare it with labels that do.

The Switch Nutrition Organic Himalayan Shilajit 8:1 capsules on the same marketplace ($53.50 for 60) also leave the dose per capsule out of the listing.

Pros:

• Australian brand with an organic extract
• Choice of one or two capsules a day

Cons:

• Dose per capsule and fulvic content not found at time of writing
• $59.95 upfront, the highest shilajit bottle price here

Best for: people who prefer an Australian brand and a light daily amount.

#9. Wanderlust Powder Shilajit 50 g — Best for shopping inside Coles

This is the only shilajit, and the only one of our four ingredients, that Coles online returned. It is a 50 g powder at $51.00 ($102.00 per 100 g). We could not find a serving size in the listing at time of writing, so we cannot give a price per serve; per gram it costs $1.02. The same 50 g Wanderlust powder is listed on Woolworths Everyday Market for $40.02 from Healthylife, which is $10.98 less.

Powder is the least exact format for a potent extract. Our shilajit at Chemist Warehouse guide covers the same ingredient at Australia’s largest pharmacy chain if you would rather buy in person.

Pros:

• Can go in a normal Coles order with click and collect
• Single ingredient

Cons:

• Serving size not found, so no per-serve price
• $10.98 more than the same jar on Woolworths Everyday Market

Best for: Coles shoppers who want shilajit in the same delivery as their groceries.

How We Evaluated These Products

We ran each search on coles.com.au and woolworths.com.au on 23 October 2026 with a Melbourne and a Sydney delivery address, opened every relevant listing and recorded the seller, price, pack size and the label direction shown. The magnesium L-threonate Coles search was repeated with the hyphenated spelling to be sure. Brand stores filled gaps where the supermarket listing left out a dose. We did not buy or lab-test competitor products. Rankings weighed:

• Quality and label transparency, including stated dose and extract strength (30%)
• Australian availability and shipping, including who actually sends the parcel (20%)
• Price per dose in AUD, normalised to the label’s serve (20%)
• Range for stacking from one seller (15%)
• Reputation and clarity of the listing (15%)

Eternal Elixir products hold the top four places. Where a competitor wins a narrower measure, such as Switch Nutrition’s lower price per threonate serve or Emrald Labs’ lower price per tongkat capsule, the table says so.

What the Research Says on These Four Ingredients

All four ingredients have small human studies behind them, and the results are encouraging rather than settled. A 12-week randomised, placebo-controlled trial by Liu and colleagues in 2016 gave adults aged 50 to 70 either MMFS-01, a magnesium L-threonate formula, or placebo; the treated group’s overall cognitive score improved significantly versus placebo (n = 23 vs 21), while effects on sleep could not be separated from a strong placebo response (PubMed 26519439).

For tongkat ali, Talbott and colleagues gave 63 moderately stressed adults a standardised hot-water root extract or placebo for four weeks, reporting 16% lower cortisol exposure and 37% higher testosterone status in the tongkat group, published in the Journal of the International Society of Sports Nutrition (PubMed 23705671). A 90-day placebo-controlled study in Andrologia gave men aged 45 to 55 purified shilajit at 250 mg twice a day and found significantly higher total and free testosterone than placebo (PubMed 26395129). Studies like these suggest possible benefits; they do not promise results for any one person.

Diet comes first for magnesium. healthdirect lists leafy greens, nuts, seeds and wholegrains as good food sources (healthdirect: magnesium). Sleep, training and stress habits matter too; our guide to getting more deep sleep covers the non-supplement side. If you take medication or have an ongoing health issue, see your GP before adding any of these.

Everyday Market Listings: What Changes When a Third Party Sells It

Every Woolworths result in our stock map came from Everyday Market, the marketplace on woolworths.com.au where outside businesses list products. The listing says who it is “Sold and shipped by”. For these products that was Healthylife or Elite Supplements, never Woolworths itself. In practice this means:

• The item ships separately from your grocery order and cannot be collected in store.
• Delivery fees and thresholds are the seller’s: Healthylife gives free delivery when its own items pass $50; Elite Supplements shows its fee at checkout.
• Returns and product questions go through the seller’s policy.

None of this makes a marketplace product worse. It does mean the supermarket name on the page is not the business sending the bottle, which is worth knowing before you compare it with buying direct from a brand. We found the same pattern when we checked the pharmacy side for magnesium L-threonate at Chemist Warehouse and saffron at Chemist Warehouse, and our Swisse vs Blackmores comparison shows what the big supermarket brands do and do not make.

Frequently Asked Questions

Does Coles sell magnesium L-threonate?

No. On 23 October 2026 our magnesium L-threonate Coles check found nothing: a magnesium threonate search on coles.com.au returned 0 results, and a magnesium l-threonate search returned only a Swisse magnesium glycinate with L-theanine, which is a different form. Eternal Elixir Magnesium L-Threonate 2000mg ships from within Australia instead.

Does Woolworths sell magnesium L-threonate?

Not from its own range. The only threonate product on woolworths.com.au was Switch Nutrition Mag3 powder at $44.57, sold and shipped by Healthylife through Everyday Market, so it arrives separately from your groceries.

Does Woolworths stock TUDCA?

Only through Everyday Market. Emrald Labs TUDCA (60 x 250 mg, $41.95, Elite Supplements) and Switch Nutrition Tudca (60 capsules, $62.42, Healthylife) were listed. Coles had no TUDCA product at all.

Is tongkat ali sold at Coles?

No. A tongkat ali search on coles.com.au returned 0 results. Woolworths Everyday Market listed Emrald Labs and Switch Nutrition capsules and an ATP Science tongkat and shilajit powder.

What shilajit does Coles have?

Coles online listed one product: Wanderlust Powder Shilajit 50 g at $51.00. The same jar was $40.02 on Woolworths Everyday Market. A serving size was not shown in the listing at time of writing.

What is a Woolworths Everyday Market seller?

Everyday Market is the marketplace on woolworths.com.au where outside businesses list products. The listing names who it is sold and shipped by, and that seller sets the delivery fee, delivery threshold and returns policy.

What are the benefits of taking magnesium L-threonate?

Magnesium L-threonate is mainly taken for brain health, memory and evening wind-down. A 2016 randomised trial of a magnesium L-threonate formula in adults aged 50 to 70 found an improvement in overall cognitive score versus placebo over 12 weeks. Results vary between people.

Verdict: Where Australians Should Look Instead of the Supermarket

If you came here from a magnesium L-threonate Coles or Woolworths search, the answer is that Coles and Woolworths do not range these four ingredients themselves. What you will find is a handful of marketplace listings on woolworths.com.au and one shilajit powder on Coles. Our recommendations by shopper:

• Want magnesium L-threonate in a fixed daily dose: Eternal Elixir Magnesium L-Threonate 2000mg, our #1 pick. Choose the Switch Nutrition powder only if the lowest per-serve price matters more than the capsule format.
• Want TUDCA for liver health support: Eternal Elixir TUDCA 500mg, the lowest cost per 500 mg here at $0.67.
• Want tongkat ali: Eternal Elixir Tongkat Ali 200:1 for the most extract per dollar; Emrald Labs if you only want one 500 mg capsule a day.
• Want shilajit with a stated dose: Eternal Elixir Shilajit 1000mg, 20% fulvic acid on the label.

Combining two or more Eternal Elixir products in one order usually takes you past the $100 free-shipping threshold, which a single marketplace bottle on Woolworths will not do. For the broader ingredient picture, start with our magnesium L-threonate guide or the tongkat ali guide for Australians.