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Tauroursodeoxycholic Acid

Tauroursodeoxycholic Acid

What the trials found

Tauroursodeoxycholic Acid does not have enough human research to establish reliable improvements in liver enzymes or liver fat in obese adults.

  • 3 papers
  • 2 of 21 outcomes

Median effective dose, most-studied outcomes

Full protocol, 2 outcomes

What tauroursodeoxycholic acid actually does

Outcome Effect Evidence Dose Time Rank
Early research 2
Lower liver enzyme levels Not enough research Liver blood tests can rise when liver cells are injured or bile flow is blocked.
— 		1 RCT 1 papers · n=— 1750 mg 4 wk —
Less liver fat in fatty liver Not enough research Fatty liver means extra fat has built up in the liver, which can lead to liver damage over time.
— 		1 RCT 1 papers · n=— 1750 mg 4 wk —

Effect tiers come from native-unit MCID where available, Cohen's d otherwise.

Protocol

Dose, timing & forms

How much

The only liver-focused protocol here used 1,750 mg daily for four weeks. That study did not establish clear improvements in liver enzymes or liver fat, so this number is a research protocol, not a proven target dose.1

When and how long

The short human protocol used TUDCA daily over weeks, not as an occasional dose. The evidence does not establish a best time of day, meal timing, or split-dose strategy for liver outcomes.1

Forms & standardisation

Look for a label that names the actual compound, tauroursodeoxycholic acid or TUDCA, and clearly states the amount per daily serving. Current human evidence does not establish that a particular capsule format, purity claim, or dosing schedule produces better liver results.1

Studied range, by outcome

Outcome Studied range Median effective Duration Evidence
Keep liver enzymes steadier 1,750 mg — 4 wk 1 paper
Reduce liver fat 1,750 mg — 4 wk 1 paper
In context

What this is and how it works

  • One study with an unreported sample size examined liver enzymes and liver fat without establishing reliable benefit.1
  • Three papers reviewed here span 21 outcomes, with evidence concentrated in two early-tier studies.
  • Human evidence remains limited to small, early research in obese men and women.

Tauroursodeoxycholic acid, usually called TUDCA, is a taurine-linked bile acid. Your body uses bile acids as digestive helpers that help handle dietary fat, while researchers are investigating TUDCA for effects beyond digestion.1

Inside cells, TUDCA appears to ease pressure on the endoplasmic reticulum, the cell's protein-folding workshop. Think of it as helping a crowded assembly line clear its backlog, which researchers link to changes in insulin signaling in liver and muscle tissue.1

Bottom line

TUDCA is reasonable only for someone who understands that its liver promises remain unproven and wants to follow emerging research carefully. It is not a convincing choice for anyone seeking a reliable way to lower liver enzymes or reduce liver fat, especially when a clinician should assess abnormal liver tests.1

Frequently asked

Common questions

What is tauroursodeoxycholic acid, or TUDCA?

TUDCA is a bile acid linked to taurine. Bile acids help move fats through digestion, and researchers are also studying how TUDCA affects cell stress signals in metabolic tissues.1

Does TUDCA lower liver enzymes?

It does not have enough human research behind it to establish that outcome. A 4-week trial using 1,750 mg daily did not establish a clear improvement in liver enzyme measures.1

How long does TUDCA take to work?

The liver-related protocol examined here lasted four weeks, so there is no solid evidence that a shorter course changes liver fat or liver enzyme results.1

Is TUDCA worth taking for fatty liver?

Not as a first-choice supplement based on current human evidence. The available short trial did not establish a clear reduction in liver fat, so expectations should stay low.1

Sources

Sources

  1. 1. Tauroursodeoxycholic acid may improve liver and muscle but not adipose tissue insulin sensitivity in obese men and women (2010) ↑

Generated August 27, 2026

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