Digestion/Weight/Cognition

TUDCA

Bile acid supplement studied for insulin sensitivity and fat digestion, most relevant for people with metabolic or bile flow issues.

score

evidence

Caution

risk

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Use with caution

This supplement may interact with medications, medical conditions or sensitive populations. Review safety before use.

Overview

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Safety

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Quick Take

Interesting metabolic and digestive effects, but human evidence is limited to small trials.

TUDCA is a taurine-conjugated bile acid naturally produced in small amounts by the liver and found in trace amounts in bile. It acts as a biological detergent that emulsifies dietary fats and has been investigated for its ability to reduce endoplasmic reticulum stress in cells. Human research suggests it may improve insulin sensitivity in obese, insulin-resistant individuals and support bile flow. It has also been explored in small neurodegenerative disease trials.

Potential benefits

Improves insulin sensitivity

Supports fat digestion

May improve liver enzyme levels

May lower inflammatory markers

May support cognitive function

Protocol

Amount

500-1750 mg

Frequency

Once or twice daily

When

With meals containing fat to support digestion; for metabolic effects, split into two doses with breakfast and dinner.

Onset Time

2-4 weeks for metabolic effects; acute digestive aid with meals.

Who Should Consider

Obese adults with insulin resistance

People post-cholecystectomy

Those with bile acid malabsorption

Individuals exploring neuroprotective strategies

How It Works

TUDCA functions as a bile salt that aids in emulsifying and absorbing dietary fats and fat-soluble vitamins. At the cellular level, it acts as a chemical chaperone that reduces endoplasmic reticulum stress and apoptosis, which may explain metabolic and neuroprotective effects observed in animal models and limited human studies.

Updated 5/19/2026