Tudca (Tauroursodeoxycholic Acid) for Digestive Health

Research suggests that bile acids — including compounds related to TUDCA — may play a meaningful role in supporting the gut's natural defenses against harmful bacteria, with one 2025 preclinical study finding that secondary bile acids produced by gut bacteria directly inhibited the growth of carbapenem-resistant Klebsiella pneumoniae in laboratory tests, and that animals with disrupted microbiomes had lower levels of these protective metabolites and significantly higher bacterial colonization. This research was conducted in mouse models examining malnutrition rather than as a direct investigation of TUDCA supplementation, so the findings cannot be straightforwardly applied to human digestive health outcomes. The available evidence base here consists of a single animal study, which represents a very early stage of scientific inquiry, and no human clinical trials, randomized controlled studies, or meta-analyses were included in this summary. Readers should understand that while the mechanistic findings are suggestive, substantial further research would be needed before any conclusions about TUDCA's role in human digestive defense could be drawn.