Best TUDCA Supplements Australia 2026: 8 Brands Compared

Last updated: August 8, 2026 · Originally published: April 10, 2026 · By Eternal Elixir Editorial

Last updated: August 4, 2026 · By Eternal Elixir Editorial · 8 products compared

TUDCA (tauroursodeoxycholic acid) is the taurine-conjugated form of ursodeoxycholic acid, a bile acid the body makes in small amounts. In Australia it sells for roughly $0.67 to $2.66 per 500mg serve depending on brand and pack size.

That price spread is the single most useful thing an Australian buyer can know about TUDCA, and it is almost impossible to see on a shop page. Australian stock is sold at 250mg and 500mg per capsule, in bottles of 30, 60 and 90, which means the sticker price tells you very little. A $47.90 bottle can cost more per serve than a $59.99 one. This guide normalises every product to a common 500mg serve so the comparison is actually a comparison.

What TUDCA actually costs in Australia once you normalise the dose

Every comparison we could find for the Australian market — including the summaries search engines assemble automatically — quotes pack prices side by side: $69.95, $47.90, $89.99. Those numbers are not comparable. They describe different doses in different quantities.

Here is the same market with one column added. Cost per 500mg serve is calculated as pack price divided by the number of 500mg servings the pack contains. Where a product is 250mg per capsule, two capsules make a 500mg serve.

Two results stand out. The first is that the cheapest-looking product is the dearest per serve: 10g of loose powder at $53.23 sounds like a bulk bargain, but 10g is only twenty 500mg doses, which works out at $2.66 each — four times the cost of the best-value capsule. The second is that the highest sticker price is not the highest cost per serve: OHC Longevity’s $89.99 bottle is better value per dose than Switch Nutrition’s $69.95 bottle, because it delivers double the milligrams per capsule.

How we compared 8 TUDCA products sold in Australia

Eternal Elixir sells TUDCA, so the honest thing to do is publish the method and let it decide the order rather than reverse-engineer a win. Our weighting:

• Quality and purity (30%) — stated dose per capsule, whether the label discloses the actual TUDCA content, and whether batch testing is documented.
• Australian availability and shipping (20%) — whether it ships domestically, and how long an Australian buyer waits.
• Cost per 500mg serve in AUD (20%) — normalised as described above, not sticker price.
• Range for stacking (15%) — whether the brand offers complementary products so a buyer can build a routine from one order.
• Customer reviews and reputation (15%) — volume and average of verified customer ratings.

A note on what we did and did not do: we compared published specifications, live retailer pricing and public customer ratings. We did not run laboratory tests on competitor products, and nothing in this guide should be read as implying we did. Eternal Elixir holds third-party Certificates of Analysis for its own formulations only. Where a rival’s listing does not state a per-capsule dose, we say so rather than guess — that is why Emrald Labs has no cost-per-serve figure in the table above.

This normalisation also flows into how we rate broader liver formulas. If you are weighing TUDCA against other options, our guide to the best liver support supplements in Australia applies the same per-serve method across the whole category.

#1 — Eternal Elixir TUDCA 500mg

Eternal Elixir TUDCA 500mg takes the top position on the metric this guide is built around: at $59.99 for 90 capsules of 500mg, it costs $0.67 per serve, against $1.50 for the next-cheapest 500mg product on the Australian market. That is not a rounding difference. Over a year of daily use the gap between this and a $1.60-per-serve import is roughly $340.

Key specs: 500mg tauroursodeoxycholic acid per vegetarian capsule, 90 capsules per bottle, one capsule daily with a meal. Ships from Australia.

Pros:

• Lowest cost per 500mg serve of any TUDCA sold in Australia at the time of writing
• 90 capsules per bottle — a full three months at one capsule daily, where most rivals ship 30 or 60
• Full 500mg in a single capsule, so no splitting doses across two pills
• Third-party tested, with Certificates of Analysis held for the formulation
• Domestic dispatch, so no customs wait

Cons:

• Far fewer published customer reviews than Nutricost, which has years of Amazon and iHerb volume behind it
• Not stocked in physical retail — you cannot pick it up in a shop today
• Single strength only; there is no 250mg option for people who want to start lower

Best for: anyone taking TUDCA daily who wants the lowest ongoing cost and the fewest reorders.

Price: $59.99 AUD — Eternal Elixir TUDCA 500mg

#2 — Nutricost TUDCA 500mg

Nutricost TUDCA 500mg is the most reviewed TUDCA an Australian can buy, and that deserves to outrank price. It carries 2,229 ratings at an average of 4.8 on iHerb Australia. No Australian brand — Eternal Elixir included — has that depth of public feedback, and for a buyer who weights social proof heavily, this is the rational pick.

Key specs: 500mg per capsule, 30 capsules, $47.90 via iHerb Australia.

Pros:

• The largest body of customer reviews available to Australian buyers by a wide margin
• Lowest sticker price among 500mg products
• Long-established brand with broad international distribution

Cons:

• $1.60 per serve — around 2.4 times the cost of the best-value option
• Only 30 capsules, so a daily user reorders monthly
• Ships internationally, so delivery is slower than a domestic dispatch

Best for: buyers who want the most-reviewed product and are comfortable paying a premium per dose for it.

#3 — Switch Nutrition TUDCA (via Woolworths)

This entry earns its place on one genuine advantage no online brand can match: you can buy it in a supermarket today. Switch Nutrition TUDCA is listed at Woolworths at $55.08 for 60 capsules, and is also carried by Nutrition Warehouse stores.

Key specs: 250mg per capsule, 60 capsules, $55.08 at Woolworths.

Pros:

• Physically available in mainstream Australian retail — no waiting, no shipping
• Australian-owned brand with established supplement distribution
• The Woolworths price is meaningfully below the brand’s own site

Cons:

• $1.84 per 500mg serve — you take two capsules to reach the dose most research uses
• A 60-capsule bottle is only 30 servings at 500mg

Best for: anyone who wants TUDCA in hand today without ordering online.

#4 — Nutricost TUDCA 250mg

The 250mg version of Nutricost’s product sits on Amazon Australia at $51.70 for 60 capsules, backed by 4,856 ratings at 4.6 — the single largest review count in this entire comparison.

Pros: fast domestic Amazon delivery; the most-rated TUDCA listing of any we found; 250mg increments make it easy to start at a lower dose and work up.

Cons: $1.72 per 500mg serve; you need two capsules for a full serve, which halves the bottle’s practical life.

Best for: first-time users who want to begin at 250mg, and buyers who prioritise Amazon delivery speed. If you are still deciding whether TUDCA is the right liver compound for you at all, our TUDCA vs NAC vs milk thistle comparison works through the differences before you commit to a bottle.

#5 — OHC Longevity TUDCA

OHC Longevity TUDCA is an Australian longevity-focused brand selling 500mg vegan capsules in bottles of 60 at $89.99. Its listing states independent third-party batch testing, which is a meaningful quality signal and one many competitors in this category do not make.

Pros: full 500mg per capsule; batch testing stated on the product listing; Australian dispatch; positioned within a longevity range rather than sports nutrition.

Cons: the highest sticker price in this comparison at $89.99; $1.50 per serve is still more than double the best-value option; 60 capsules is two months at one daily.

Best for: buyers who weight documented batch testing above price and want an Australian longevity brand.

#6 — Switch Nutrition TUDCA (brand site)

The same product as entry three, bought directly from Switch Nutrition at $69.95 for 60 capsules. We list it separately because the channel changes the economics substantially: at $2.33 per 500mg serve it is the most expensive capsule option here, roughly 27% more per dose than buying the identical product at Woolworths.

Best for: buyers who prefer ordering direct from the brand — though on current pricing there is no cost reason to.

#7 — Emrald Labs TUDCA

Emrald Labs TUDCA carries the lowest sticker price in this comparison at $49.90 through Elite Supps, and is widely stocked across Australian gym and supplement retail. It holds a 5-star average, though from only 5 ratings.

We cannot place it on the value ranking, and that is the honest finding: the retailer listing we checked did not state milligrams of TUDCA per capsule. Without that number, $49.90 cannot be converted to a cost per serve, and a low sticker price on an undisclosed dose is not a bargain — it is an unknown. Check the physical label before comparing it to anything in this table.

Best for: buyers who can inspect the label in person at a stockist and confirm the dose themselves.

#8 — Bulk TUDCA powder (eBay Australia)

Loose powder appears on eBay Australia at $53.23 for 10 grams from a domestic seller. It looks like the bulk-buyer’s move and is the worst value in this guide.

Ten grams is twenty 500mg servings, which is $2.66 per serve — four times the cost of the best-value capsule. It also requires a milligram scale to dose accurately, offers no capsule-level consistency, and comes without the batch documentation the better brands provide. We include it because it ranks on the first page of Australian TUDCA searches, not because we recommend it.

What the research actually shows about TUDCA

The compound is genuinely interesting and genuinely early. Being precise about what has been shown, in what species, matters more here than in most supplement categories.

The clearest description of what TUDCA is comes from a review by Sheila Vang and colleagues, including Professor Clifford J. Steer of the University of Minnesota, published in Global Advances in Health and Medicine in 2014. It sets out that tauroursodeoxycholic acid is the taurine conjugate of ursodeoxycholic acid, a secondary bile acid produced by intestinal bacteria, and reviews investigation of the compound beyond the liver (PMID 24891994). This is a review of prior work, not a trial.

On inflammation, research published in the British Journal of Pharmacology in 2018 by Wang and colleagues found that it reduced intestinal inflammation and limited gut barrier disruption — in mice with non-alcoholic fatty liver disease (PMID 29139555). A 2024 study in the Journal of Agricultural and Food Chemistry reported that it improved markers of non-alcoholic fatty liver disease by acting on gut microbiota and bile acid metabolism, also in an animal model (PMID 39193771).

Those two are animal studies. That is the honest state of the evidence: the mechanistic work is promising and the human supplementation trials are not there yet. Anyone telling you the compound is proven to do these things in people is ahead of the published research.

Human data does confirm that it circulates naturally in the body. A 2024 study in Nutrients measured bile acids in the plasma of adults with fatty liver disease and healthy controls, and found tauroursodeoxycholic acid among the bile acids elevated in men with the condition (PMID 38257143). This was an observational metabolomics study — it measured the bile acid the body makes, and did not test supplements.

The practical read: It has a well-characterised identity and an encouraging mechanistic literature, mostly preclinical. Dose accordingly and treat confident health claims with suspicion. Our guide to the signs your liver may need support covers when it is worth considering at all, and when to see a doctor instead.

Where Australians can buy TUDCA in person

It is not a pharmacy staple in Australia. The compound is not stocked in Chemist Warehouse, which is the first place most people look — our Chemist Warehouse TUDCA guide covers what is and is not on those shelves. The realistic in-person options are Woolworths, which lists Switch Nutrition TUDCA, and specialist retailers including Nutrition Warehouse and Elite Supps.

Everything else is online: brand-direct from Australian sellers like Eternal Elixir and OHC Longevity, or imported through iHerb and Amazon Australia. Domestic sellers dispatch faster; imports take longer but sometimes carry deeper review histories.

Questions Australians ask about TUDCA

Who is TUDCA good for?

It is most commonly used by adults interested in liver and bile flow support, and by people who want a bile acid supplement rather than a herbal liver formula. It has been studied in the context of cholestasis, where bile fails to flow properly from the liver. It is not suitable for people who are pregnant or breastfeeding, or for anyone under 18. If you take prescription medication or have a diagnosed liver or digestive condition, speak to your doctor before starting.

Does TUDCA reduce inflammation?

In animal research, yes. The British Journal of Pharmacology study cited above found TUDCA inhibited intestinal inflammation and barrier disruption in mice with fatty liver disease (PMID 29139555). Equivalent controlled trials in humans have not been published, so this should be read as a promising mechanism rather than a demonstrated effect in people.

What is TUDCA also known as?

TUDCA stands for tauroursodeoxycholic acid. It is the taurine conjugate of ursodeoxycholic acid (UDCA), a secondary bile acid produced by intestinal bacteria. You will sometimes see the pair written together as T/UDCA in the literature.

Is TUDCA legal in Australia?

It is sold openly in Australia by domestic retailers including Woolworths, Nutrition Warehouse and Elite Supps, and is imported by Australian buyers through iHerb and Amazon Australia. Availability across mainstream and specialist retail is straightforward.

How much TUDCA should I take?

Australian labels state daily servings between 250mg and 500mg, most commonly taken with a meal containing some fat, which supports bile flow. Eternal Elixir TUDCA delivers 500mg in one capsule; 250mg products require two capsules for the same serve. Our TUDCA dosage guide for Australia works through timing and titration in detail.

Why is cost per serve different from price per capsule?

Because it is sold at two strengths in Australia. A 250mg capsule is half a standard serve, so a bottle of 60 at 250mg is 30 serves, not 60. Comparing a per-capsule price on a 250mg product against a per-serve price on a 500mg product makes the weaker-dosed product look twice as cheap as it is. Every figure in this guide is normalised to 500mg for that reason.

Does TUDCA need to be taken with food?

Most Australian labels, including Eternal Elixir’s, suggest taking it with a meal — ideally one containing some healthy fats, since dietary fat is what triggers bile release. This is a label instruction rather than a research finding.

Can I take TUDCA with other longevity supplements?

It is commonly combined with antioxidant and metabolic compounds. Many Australians pair it with glutathione or run it alongside a broader routine — our Australian longevity stack guide covers sensible combinations, and the longevity supplement evidence index ranks compounds by how much human trial data actually exists behind each one. Introduce one product at a time so you can tell what is doing what.

How TUDCA fits into an Australian longevity routine

Most people buying it are not buying it alone. It sits in the liver and metabolic corner of a routine, and the sensible question is what it genuinely complements rather than what can be bundled onto an order.

The pairing with the strongest logic is glutathione. The bile acid supports bile flow and the movement of waste out through the biliary route; glutathione is the body’s principal antioxidant and works on a different arm of the same broad process. They are not substitutes, and taking both is not duplication. Reduced L-Glutathione 2000mg is Eternal Elixir’s option here at $39.99 for 90 capsules — though note the serving is two capsules, so a bottle is 45 serves rather than 90. That is precisely the arithmetic this guide has been arguing you should do before every purchase.

The second pairing worth understanding is metabolic. The animal research described above concerns non-alcoholic fatty liver disease, which is fundamentally a metabolic condition rather than a toxin one. People acting on that literature often look at blood sugar and lipid handling at the same time, which is where berberine enters — Berberine HCl 500mg is the Eternal Elixir formulation, and our Australian berberine comparison applies the same cost-per-serve normalisation used here.

Third, and further from the liver, is the cellular ageing group: NAD+ precursors and related compounds taken for general healthspan rather than any organ in particular. NMN 500mg is the common entry point, and Ca-AKG 500mg is the other compound Australians most often add at this layer. This is a different goal with a different evidence base, and it is worth being clear that combining them is a matter of covering separate aims, not of one amplifying the other.

What none of these pairings should be is automatic. A stack assembled because four products happened to be discounted together is not a strategy, and the cost-per-serve discipline this guide applies to one shelf is worth applying across the whole basket. Work out what each item costs you per day, decide whether that daily figure is justified by what you actually expect from it, and drop anything that fails the question. Most routines that collapse after two months collapse on price rather than on effect.

One practical caution that applies to all of this: introduce one product at a time, a fortnight apart. If you begin four things in one week and something disagrees with you, you have no way of knowing which one caused it. That is not a supplement-specific rule so much as basic troubleshooting, but it is the advice most often skipped when someone builds a stack from a single order.

The verdict by buyer type

If you are taking TUDCA daily and want the lowest ongoing cost: Eternal Elixir TUDCA 500mg at $0.67 per serve, in a 90-capsule bottle that lasts three months.

If customer reviews matter most to you: Nutricost TUDCA 500mg on iHerb Australia — 2,229 ratings at 4.8 stars is validation no Australian brand can currently match.

If you want it today, in person: Switch Nutrition TUDCA at Woolworths for $55.08.

If documented batch testing is your priority: OHC Longevity TUDCA, which states independent third-party batch testing on its listing.

If you are starting out and want a lower dose: Nutricost 250mg on Amazon Australia, which lets you begin at 250mg and increase.

What to avoid: loose bulk powder, which costs four times as much per serve as the best capsule and cannot be dosed accurately without a scale. And treat any product that does not state milligrams per capsule as unpriceable until you have read the label.

For most Australians taking TUDCA as an ongoing part of a routine, the arithmetic points one way. If you are building a wider regimen, our glutathione comparison applies the same per-serve normalisation to the master antioxidant category.

Related guide: many longevity stacks pair TUDCA with NMN — compare our best NMN supplements in Australia.

Related guide: not sure which liver ingredient is right for you? See our full TUDCA vs. milk thistle comparison.