What is TUDCA?
Where it comes from, how it relates to bile acids, and how modern products are made.
Information site
Clear information about TUDCA
TUDCA (tauroursodeoxycholic acid) is a water-soluble bile acid. People use it as a dietary supplement, mostly for liver and bile-flow support. This site explains what it is, what research shows, and how to choose a product - without hype.
How it works
Bile flow, cell stress (ER stress), and why researchers call it a chemical chaperone.
Research overview
An honest look at human studies versus animal findings and marketing claims.
Dosage and safety
Typical ranges, what clinical trials used, and who should be careful.
Recommended products
We list a small set of clearer options for the US, UK and EU. Use the region control above to match your location. Product links may earn a commission.
TUDCA 250 mg capsules
Double Wood
250 mg per capsule (often 500 mg per serving)
Third-party tested for identity, potency, heavy metals and microbes. Clear single-ingredient formula and a well-known brand on Amazon US.
TUDCA 250 mg or 500 mg capsules
Nutricost
250 mg or 500 mg per capsule
Clear dose on the label, third-party tested, and usually good value. Made in a GMP-compliant facility.
TUDCA 500 mg capsules
Nutricost
500 mg per capsule
Same transparent Nutricost formula via iHerb, which ships widely and often handles VAT on smaller EU orders.
TUDCA capsules
Double Wood
Typically 250 mg per capsule
Import option for shoppers who want a tested single-ingredient capsule when local stock is limited.
TUDCA + NAC
Applied Nutrition
800 mg TUDCA + 900 mg NAC per serving
UK brand with a clear dose. Common on Amazon UK and high-street health shops. Combines TUDCA with NAC for antioxidant support.
TUDCA + NAC
Applied Nutrition
800 mg TUDCA + 900 mg NAC per serving
Same UK formula via Holland & Barrett if you prefer a high-street retailer.
TUDCA + NAC
Supplement Needs
750 mg TUDCA + 900 mg NAC per serving
Transparent two-ingredient formula with clinically relevant doses. Good UK option when you want labelled amounts without a proprietary blend.
TUDCA+ 250 mg
ALLMAX
250 mg TUDCA per capsule
Clear TUDCA dose plus a small amount of choline. Useful iHerb option for EU shoppers who want a known sports-nutrition brand.
No products listed for this region yet. Try another region above, or see how to choose a TUDCA product.
Not medical adviceThis site shares general information only. TUDCA supplements are not medicines and are not approved to treat disease. If you have a liver condition, take medicines, or are pregnant or breastfeeding, ask a qualified clinician first.