What Are the Benefits of TUDCA Supplement?

Last updated: November 1, 2026 · Originally published: December 18, 2025 · By Eternal Elixir Editorial

Quick answer: TUDCA (tauroursodeoxycholic acid) is a bile acid your body makes in small amounts, and it is sold as a supplement to support liver function and bile flow. The human evidence in people without a diagnosed condition is small. In a four-week trial, 20 adults with an average BMI of 37 took 1,750mg a day, and their liver and muscle insulin sensitivity rose by about 30% against no change on placebo. In a single-dose study, 1,500mg kept blood-vessel function steady in 12 healthy young adults after a sugary drink. Most of the other benefits you will read about, for cell stress, the gut, eyes, brain and mitochondria, come from cell and animal research. Our pick is Eternal Elixir TUDCA 500mg: 90 capsules for $59.99, one capsule a day with a meal, which is $0.67 a day.

Eternal Elixir makes TUDCA 500mg, and it is our pick. We read the other products in this guide on their own product pages or the Australian retailer pages we link, in September 2026, and we have not lab-tested any of them. No published trial has tested our capsule or theirs, so the studies below describe TUDCA itself at the doses the researchers used.

What TUDCA is

TUDCA is ursodeoxycholic acid (UDCA) joined to the amino acid taurine. It is a naturally occurring, water-loving bile acid that has been used for centuries in Chinese medicine (Kusaczuk, Cells, 2019). Bile acids are made in the liver, stored in the gallbladder and released into the gut to help you digest fats.

In lab studies, TUDCA acts as a “chemical chaperone”: it helps cells cope when the endoplasmic reticulum, the part of the cell that folds proteins, is under strain. The same review points out that most of the evidence for TUDCA is pre-clinical, meaning cells and animals, and that there are limits on how far it has been taken in people. For a wider look at the options and how they compare, see our TUDCA supplement comparison for Australia.

TUDCA benefits in people: what the human trials show

Most human TUDCA research has been done in people being treated for specific medical conditions. Those results do not carry across to a healthy adult taking a supplement, so we have not listed them as benefits. Here are the two trials in people without a diagnosed condition that we could find.

Insulin sensitivity

This is the strongest human result outside medical care. Researchers in the US gave 20 adults with an average BMI of 37 either 1,750mg of TUDCA a day or a placebo for four weeks, and measured insulin sensitivity with a clamp test, the reference method for measuring it. Insulin sensitivity in the liver and muscle rose by about 30% on TUDCA and did not change on placebo. Insulin signalling inside muscle also improved (Kars et al., 2010).

Two details matter. Insulin sensitivity in fat tissue did not change. And the markers of cell stress that TUDCA reduces in lab studies did not change in the volunteers’ muscle or fat, so this trial did not confirm the chaperone idea in people. It was also a four-week trial at a dose more than three times a typical supplement serve.

Blood-vessel function after a sugary drink

Blood vessels widen less well for a while after a large dose of sugar. In a small crossover study, 12 healthy young adults took either 1,500mg of TUDCA or a placebo before a glucose drink. On placebo, flow-mediated dilation, a measure of how well an artery widens, fell 32% at 60 minutes. On TUDCA it fell only 4%. Blood glucose and insulin were no different between the two visits (Walsh et al., Clinical Science, 2016). It was one dose in 12 people, so it shows an effect worth studying rather than a routine benefit.

Liver function and bile flow

TUDCA is a bile acid, and that is why it is sold for liver and bile support. Its human research on liver tests comes from people under medical care for liver conditions, not from healthy adults. We found no trial that measured liver function in healthy people taking TUDCA as a supplement. If liver health is your reason for looking at TUDCA, our comparison of TUDCA and milk thistle sets the two side by side.

Benefits seen only in cells and animals so far

Many TUDCA articles list seven or more benefits. Here is where the rest stand.

• Cell stress (ER stress): TUDCA reduces endoplasmic reticulum stress, oxidative stress and inflammation in many cell and animal models (Kusaczuk, 2019). In the one human trial that looked, stress markers in muscle and fat did not change.
• Gut barrier and gut bacteria: we found no human trial in healthy adults.
• Eyes, brain and nerves: studied in cells and animals, and in people with specific medical conditions. None of that shows a benefit for healthy people.
• Mitochondria: we found no human trial.

What has not been shown

• We found no trial of TUDCA in healthy adults that measured liver function.
• We found no trial longer than four weeks in people without a diagnosed condition.
• The trials above used 1,500mg to 1,750mg, well above a 500mg supplement serve. Whether 500mg a day does the same has not been tested.
• No published trial has tested any retail TUDCA product in Australia, ours included.

How to take TUDCA

Our label says to take one capsule (500mg) a day with a meal. That is lower than the amounts used in the trials above, and there is no trial showing which daily amount suits a healthy adult. If you want to take more than the label amount, talk to your GP first. Our TUDCA dosage guide for Australia covers amounts, timing and how long people take it.

Taking it with a meal fits how bile acids work, since bile is released when you eat. If you take other supplements, check the combined routine with your GP or pharmacist. Our Reduced L-Glutathione 2000mg is the product people most often ask about alongside TUDCA.

Is TUDCA safe?

The best safety data comes from a 24-week trial in 199 adults being treated for a liver condition. They took 250mg of TUDCA three times a day (750mg a day) or the standard prescription bile acid. Both were well tolerated, with similar rates of adverse events, and neither group’s liver tests worsened (Ma et al., Medicine, 2016). That is a medical setting at a higher dose than our capsule, but it is the largest safety dataset we found.

Talk to your GP before taking TUDCA if any of these apply:

• You are pregnant or breastfeeding. We found no safety data for these groups.
• You are under 18.
• You have a liver or gallbladder condition, or you have been told your bile ducts are blocked.
• You take regular medicines, including anything prescribed for your liver or gallbladder.

Our TUDCA side effects guide covers the reported side effects in more detail.

TUDCA availability in Australia

Chemist Warehouse does not sell TUDCA online: a search for “tudca” on its website in September 2026 returned one result, a fragrance. Our guide to TUDCA at Chemist Warehouse has the details, and our guide to buying TUDCA in Australia covers where else it is sold. Here is how the main options compare, with prices in Australian dollars as of Sep 2026.

Our price is from our live product page. Competitor prices were read from the linked pages in September 2026 and change with promotions, so check before you buy.

Add TUDCA 500mg to cart · $59.99

Emrald Labs has the cheapest bottle at $49.90, but its capsules hold 250mg, so it costs $1.66 for each 500mg of TUDCA. OHC Longevity states third-party testing for identity and potency on its page. Ours has the lowest cost per 500mg in the table, at $0.67, and one bottle lasts 90 days at the label serve.

Why Eternal Elixir TUDCA is our pick

Eternal Elixir makes this product. Here is what the label and product page give you.

• What is in it: tauroursodeoxycholic acid (TUDCA), 500mg per vegetarian capsule.
• Amount: one capsule a day with a meal, 90 capsules per bottle, 90 days at the label serve.
• Price: $59.99 a bottle, which is $0.67 a day.
• Buying ahead: the product page takes 10% off two bottles, 15% off three and 20% off five. Two bottles come to $107.98, which clears the $100 free-shipping threshold.
• Service: a 30-day money-back guarantee, dispatch in 1 business day and Afterpay at checkout.

Where it does not win: our label dose of 500mg is below the amounts used in the trials, and Emrald Labs costs less per bottle if you only want 250mg a day. Our Metabolic Wellness Stack already contains our TUDCA, so if you buy the stack there is no need to add a separate bottle. You can read the full label on our TUDCA 500mg product page or browse the Eternal Elixir shop.

TUDCA benefits: frequently asked questions

What are the benefits of taking TUDCA?

In people without a diagnosed condition, two small studies stand out. Four weeks at 1,750mg a day raised liver and muscle insulin sensitivity by about 30% in 20 adults with an average BMI of 37, and a single 1,500mg dose kept blood-vessel function steady after a sugary drink in 12 healthy young adults. Claims about cell stress, the gut, eyes, brain and mitochondria come mainly from cell and animal studies.

Is TUDCA safe to take every day?

The largest safety dataset we found is a 24-week trial in 199 adults under medical care, where 750mg a day was as well tolerated as the standard prescription bile acid. We found no long-term trial of TUDCA as a daily supplement in healthy adults. Talk to your GP if you plan to take it for months at a time, and do not take more than the label amount without their advice.

What should you avoid when taking TUDCA?

Avoid taking it if you are pregnant or breastfeeding, and do not start it without your doctor’s advice if you have a liver or gallbladder condition or take regular medicines. Avoid doubling up by taking a separate TUDCA product alongside a stack that already contains it.

Is TUDCA hard on the liver?

TUDCA is itself a bile acid made in the liver. In the 24-week trial of 199 adults being treated for a liver condition, 750mg a day was well tolerated and liver tests did not worsen. If you have any liver condition, speak to your doctor before taking it.

How much TUDCA should I take?

Our label directs one 500mg capsule a day with a meal. The human studies used 750mg to 1,750mg a day, or a single 1,500mg dose, and none tested which amount suits a healthy adult. Ask your GP before going above the label amount.

How long does TUDCA take to work?

The insulin sensitivity trial measured its result after four weeks. The blood-vessel study measured the effect within two hours of a single dose. We found no longer trial in people without a diagnosed condition, so give it at least a month before you judge it.

Can you buy TUDCA in Australia?

Yes. TUDCA is sold in Australia by supplement brands, sports-nutrition stores and online retailers, though not by Chemist Warehouse online. Our pick is Eternal Elixir TUDCA 500mg, which is dispatched in 1 business day.

Which TUDCA supplement do we recommend?

Our pick is Eternal Elixir TUDCA 500mg, which we make: 90 capsules for $59.99, the lowest cost per 500mg in our table at $0.67, and dispatch in 1 business day. Emrald Labs has the cheapest bottle if you want 250mg a day, and OHC Longevity states third-party testing on its page. The table above compares all five.

Add TUDCA 500mg to cart · $59.99

The bottom line on TUDCA benefits

TUDCA is a bile acid with a large body of lab research and a small body of human research in people without a diagnosed condition. The best of it shows better liver and muscle insulin sensitivity after four weeks at 1,750mg a day, and steadier blood-vessel function after a single 1,500mg dose. Treat the other claimed benefits as unproven in people. Our pick is Eternal Elixir TUDCA 500mg, for the lowest cost per 500mg in our table and the Sydney dispatch, with one caveat: its label dose is below the amounts the trials used.

Our other guides mostly cover herbs rather than bile acids. If you are building a wider routine, our tongkat ali guide for Australia is a good place to start.

Sources

1. Kusaczuk M. Tauroursodeoxycholate: bile acid with chaperoning activity: molecular and cellular effects and therapeutic perspectives. Cells. 2019;8(12):1471. PubMed 31757001
2. Kars M, Yang L, Gregor MF, et al. Tauroursodeoxycholic acid may improve liver and muscle but not adipose tissue insulin sensitivity in obese men and women. Diabetes. 2010;59(8):1899-1905. PubMed 20522594
3. Walsh LK, Restaino RM, Neuringer M, Manrique C, Padilla J. Administration of tauroursodeoxycholic acid prevents endothelial dysfunction caused by an oral glucose load. Clinical Science. 2016;130(21):1881-1888. PubMed 27503949
4. Ma H, Zeng M, Han Y, et al. A multicenter, randomized, double-blind trial comparing the efficacy and safety of TUDCA and UDCA in Chinese patients with primary biliary cholangitis. Medicine. 2016;95(47):e5391. PubMed 27893675
5. Product pages read in September 2026: Eternal Elixir TUDCA 500mg, Emrald Labs TUDCA at Elite Supps, Zombie Labs TUDCA at Nutrition Warehouse, OHC Longevity TUDCA and Nutricost TUDCA 500mg at iHerb AU.