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Tud8.5
TUDCA Research
Likely helpsHigh safety
37 peer-reviewed studies
What the evidence says
Likely helps
TUDCA appears to help in 5 of 5 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality randomised trials published 2006–2026 with a typical study size of 23 participants.
Based on 37 studies · 13 RCTs · 752 total participants
Confidence
Moderate
What the studies found
5helped· 32 more without graded effect data
By outcome
Liver healthSupports bile flow and ER stress response · 4-8 weeks
Likely helps32 studies
Neuroprotection & brain aging
Mostly mechanism / observational12 studies
Glucose & metabolic
Mostly mechanism / observational11 studies
Therapeutic & clinical
Mostly mechanism / observational7 studies
ALS & motor-neuron disease
Mostly mechanism / observational4 studies
Vision & eye health
Mostly mechanism / observational4 studies
Safety profile
Mostly mechanism / observational4 studies
Women's health
Too few graded studies2 studies
Heart & blood pressure
Too few graded studies1 study
Skin health
Too few graded studies1 study
By the numbers
Pulled from 32 studies with measurable effects
Likely real effects
50%
across studies
People studied
752
typical study: 23 people
Strongest designs
13
0 pooled, 13 randomised
Showed benefit
100%
5/5 studies
How long studies ran
1–4 weeks
1
3+ months
3
Populations Studied
Retinal disease patients2
ALS patients2
Metabolic diseases1
Gastrointestinal cancer patients1
Active research area
18 studies in the last 5 years
200620162026
1Systematic ReviewCited 13×2025
The endoplasmic reticulum (ER) plays a fundamental role in maintaining cellular homeostasis by ensuring proper protein folding, lipid metabolism, and calcium regulation.
Alotaibi G et al. · European journal of pharmacology (2025)
The endoplasmic reticulum (ER) plays a fundamental role in maintaining cellular homeostasis by ensuring proper protein folding, lipid metabolism, and calcium regulation.
However, disruptions to ER function, known as ER stress, activate the unfolded protein response (UPR) to restore balance.
Additionally, it discusses emerging therapeutic areas, including soluble epoxide hydrolase (sEH) inhibitors for metabolic disorders and MERCs modulation for neurological diseases.
Collectively, microbiota-derived metabolites represent promising targets for precision diagnosis and treatment in GI cancer immunotherapy.
Luo W et al. · Frontiers in immunology (2025)
In addition, dietary interventions, probiotics, engineered microbes, and plant-derived nanoparticles offer novel strategies to reshape the microbiota-metabolite-immune axis and improve immunotherapy outcomes.
To pinpoint the sites of metabolite action and mitigate translational risks, we highlight immune-competent organoid co-culture systems.
These platforms enable quantitative assessment of exposure-response thresholds, dissection of context-dependent effects, and in vitro pre-evaluation of the feasibility and safety of metabolite-based immunologic adjuvants combined with PD-1/PD-L1 blockade.
The evolving understanding of the genetic and pathophysiologic underpinnings of disease offers promise for more effective and clinically meaningful treatments in the future.
Izenberg A · Continuum (Minneapolis, Minn.) (2023)
Therefore, TUDCA has emerged as a potential therapeutic strategy for obesity and comorbidities.
Freitas IN et al. · Frontiers in endocrinology (2023)
In this review, we highlight the effects of TUDCA and receptors TGR5 and FXR on adipose tissue in the setting of obesity.
TUDCA has been demonstrated to limit metabolic disturbs associated to obesity by inhibiting ER stress, inflammation, and apoptosis in adipocytes.
The beneficial effect of TUDCA on perivascular adipose tissue (PVAT) function and adiponectin release may be related to cardiovascular protection in obesity, although more studies are needed to clarify the mechanisms.
The tauroursodeoxycholic acid (TUDCA), one of the acids found in bear bile, is a hydrophilic bile acid and naturally produced in the liver by conjugation of taurine to ursodeoxycholic acid (UDCA).
Zangerolamo L et al. · Life sciences (2021)
The tauroursodeoxycholic acid (TUDCA), one of the acids found in bear bile, is a hydrophilic bile acid and naturally produced in the liver by conjugation of taurine to ursodeoxycholic acid (UDCA).
Our research extends the knowledge of the bile acid TUDCA actions in ND and the mechanisms and pathways involved in its cytoprotective effects on the brain, providing a novel perspective and opportunities for treatment of these diseases.
Research Strategy: Key word searching of PubMed was employed to locate the research papers whose findings are cited in this essay.
McCarty MF · International journal of molecular sciences (2021)
The potential advantages of whole-food plant-based diets, moderation in salt intake, avoidance of phosphate additives, and regular exercise training and sauna sessions are also discussed.
There should be considerable scope for the development of functional foods and supplements which make it more convenient and affordable for patients to consume complementary combinations of the agents discussed here.
Research Strategy: Key word searching of PubMed was employed to locate the research papers whose findings are cited in this essay.
7Systematic ReviewCited 11×n=17 · very small study2024
This systematic review demonstrated that TUDCA has neuroprotective effect on in vivo and in vitro models of retinal disorders, reinforcing the currently available evidence that TUDCA could be a promising therapeutic agent in retinal diseases treatment.
Li J et al. · Current neuropharmacology (2024)
This systematic review demonstrated that TUDCA has neuroprotective effect on in vivo and in vitro models of retinal disorders, reinforcing the currently available evidence that TUDCA could be a promising therapeutic agent in retinal diseases treatment.
However, well designed clinical trials are necessary to appraise the efficacy of TUDCA in clinical setting.
8Therapeutic potential of bile acids in neurological disordersSystematic ReviewCited 92×2022
Overall, this review confirms the therapeutic potential of UDCA, GUDCA and TUDCA in neurological, neurodegenerative and neuropsychiatric disorders, proposing bile acids as potential alternative the...
Huang F et al. · Brain, behavior, and immunity (2022)
Overall, this review confirms the therapeutic potential of UDCA, GUDCA and TUDCA in neurological, neurodegenerative and neuropsychiatric disorders, proposing bile acids as potential alternative therapeutic approaches for patients suffering from these disorders.
This review explores the findings of recent studies highlighting bile acid-mediated therapies and bile acid-mediated signaling and the roles they play in neurodegenerative and neurological diseases.
Grant SM et al. · International journal of molecular sciences (2020)
Recent studies have shown that bile acid signaling may also have a prevalent role in the central nervous system.
Some bile acids, such as tauroursodeoxycholic acid and ursodeoxycholic acid, have shown neuroprotective potential in experimental animal models and clinical studies of many neurological conditions.
Alterations in bile acid metabolism have been discovered as potential biomarkers for prognosis tools as well as the expression of various bile acid receptors in multiple neurological ailments.
11Specific therapy for transthyretin cardiac amyloidosisSystematic ReviewCited 18×2020
Novel therapeutic targets including transthyretin gene silencers are currently under investigation.
Marques N et al. · Journal of the American Heart Association (2020)
The one study on AG10 had only a 1-month duration and cardiovascular end points were exploratory and limited to cardiac biomarkers.
Limited evidence from noncomparative single-arm small non-RCTs existed for diflunisal, epigallocatechin-3-gallate (green tea extract), and doxycycline+tauroursodeoxycholic acid/ursodeoxycholic acid.
Conclusions This systematic review of the literature supports the use of tafamidis in wild-type and variant transthyretin-CA.
12Endoplasmic reticulum stress and protein degradation in chronic liver diseaseSystematic ReviewCited 106×2020
Endoplasmic reticulum (ER) stress is easily observed in chronic liver disease, which often causes accumulation of unfolded or misfolded proteins in the ER, leading to unfolded protein response (UPR).
Xia SW et al. · Pharmacological research (2020)
Endoplasmic reticulum (ER) stress is easily observed in chronic liver disease, which often causes accumulation of unfolded or misfolded proteins in the ER, leading to unfolded protein response (UPR).
Accumulated misfolded proteins could activate these arms, and then generate various transcription factors to regulate the expression of UPS-related and autophagy-related genes.
The protein degradation process regulated by UPR has great significance in many chronic liver diseases, including non-alcoholic fatty liver disease (NAFLD), alcoholic liver disease (ALD), viral hepatitis, liver fibrosis, and hepatocellular carcinoma(HCC).
13Neuroprotective effects in retinal diseaseSystematic ReviewCited 71×2019
As secondary bile acids are generated by the microbiota metabolism, bile acids might be a link between neurodegenerative retinal diseases and microbiota.
Daruich A et al. · Molecular vision (2019)
Ursodeoxycholic acid (UDCA) and tauroursodeoxycholic acid (TUDCA) have shown antiapoptotic, anti-inflammatory, and antioxidant effects in various models of neurodegenerative diseases.
However, little is known about signaling pathways and molecular mechanisms through which these bile acids act as neuroprotectors, delaying translation to the clinical setting.
We review evidence supporting a potentially therapeutic role for bile acids in retinal disorders, and the mechanisms and pathways involved in the cytoprotective effects of bile acids from the liver and the enterohepatic circulation to the central nervous system and the retina.
14Neuroprotective strategies for retinal diseaseSystematic ReviewCited 192×2018
We discuss attractive candidates here with the goal of furthering retinal research in critical areas to rapidly translate neuroprotective strategies into the clinic.
Pardue MT et al. · Progress in retinal and eye research (2018)
In addition, we review rehabilitative methods that increase endogenous repair mechanisms, including exercise and electrical stimulation therapies.
Despite the high incidence of retinal diseases and the complexity of mechanisms involved, several promising neuroprotective treatments provide hope to prevent blindness.
We discuss attractive candidates here with the goal of furthering retinal research in critical areas to rapidly translate neuroprotective strategies into the clinic.
Pancreatic β cells are sensitive to excessive endoplasmic reticulum stress and dysregulated eIF2α phosphorylation, as indicated by transcriptome data, monogenic forms of diabetes and pharmacological studies.
Cnop M et al. · Molecular metabolism (2017)
Pancreatic β cells are sensitive to excessive endoplasmic reticulum stress and dysregulated eIF2α phosphorylation, as indicated by transcriptome data, monogenic forms of diabetes and pharmacological studies.
This should be taken into consideration when devising new therapeutic approaches for diabetes.
Xavier JM et al. · The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry (2016)
Nowadays, mitochondria are constituted by small circular mitochondrial DNA of 16 kb, responsible for the control of several proteins, including polypeptides of the electron transport chain.
Throughout evolution, these organelles acquired the capacity of regulating energy production and metabolism, thus becoming central modulators of cell fate.
17Pancreatic beta cell resilience to proteotoxic stressSystematic Review2026
This review explores the evidence for IAPP-mediated proteotoxicity in multiple forms of diabetes, the mechanisms of cytotoxicity at different levels of the cell's protein quality control systems, how these small organic compounds may act on these processes including new insights on the role of thioredoxin-interacting protein (TXNIP), and the current evidence supporting each of these compounds in mitigating diabetogenesis.
Valshon K et al. · International journal of molecular sciences (2026)
A small but growing body of research also links IAPP-mediated proteotoxic stress to the pathogenesis of type 1 diabetes and to the functional decline of transplanted islets.
Published in International journal of molecular sciences (2026)