Ursodeoxycholic acid 25mg/5ml oral suspension
Requires a prescription from a doctor or prescriber
Drugs affecting intestinal secretions
Official documents, adverse reaction reporting, and safety monitoring
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Official medicine documents
Safety monitoring data
Yellow Card reports
The MHRA Yellow Card scheme collects reports of suspected side effects from healthcare professionals and patients. View the Drug Analysis Profile (iDAP) for real-world adverse reaction data.
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Suspected adverse reactions reported for Ursodeoxycholic acid
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Data from the MHRA Yellow Card scheme. A reported reaction does not necessarily mean the medicine caused it. Contains public sector information licensed under the Open Government Licence v3.0.
EudraVigilance
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Suspected adverse reactions reported for Ursodeoxycholic acid
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1 branded products available
WHO defined daily dose (DDD)
750 mg
Not a recommended dose. The DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults. It is a statistical measure used for research and comparison purposes only.
Source: WHO Collaborating Centre for Drug Statistics Methodology, distributed via NHS dm+d BNF mapping files. Contains public sector information licensed under the Open Government Licence v3.0.
Therapeutically similar medicines
Similarity based on WHO Anatomical Therapeutic Chemical (ATC) classification and NHS BNF section grouping. Source data: NHS dm+d via TRUD (OGL v3.0), WHO ATC/DDD Index.
NHS prescribing volume and spending trends
Clinical guidelines and formulary information
British National Formulary
Ursodeoxycholic acid
Source: British National Formulary, NICE. Joint Formulary Committee. Contains public sector information licensed under the Open Government Licence v3.0.
NICE clinical guidance(4)
Obeticholic acid for treating primary biliary cholangitis (TA443)
Cystic fibrosis: diagnosis and management (NG78)
Odevixibat for treating progressive familial intrahepatic cholestasis (HST17)
Elafibranor for previously treated primary biliary cholangitis (TA1016)
Source: National Institute for Health and Care Excellence (NICE). Contains public sector information licensed under the Open Government Licence v3.0.
Check stock at pharmacies and supply information
Pharmacy stock checkers
Search for this medicine at major UK pharmacy chains. These links open the retailer's own website — results depend on their current online catalogue.
Supply & product information
Official product databases and supply status monitoring
Pharmacy links redirect to the retailer's own search and do not represent real-time stock levels. emc (electronic medicines compendium) is operated by Datapharm Ltd. Shortage information sourced from NHS Specialist Pharmacy Service (SPS), sps.nhs.uk.
Codes for healthcare professionals and prescribing systems
These codes are used by healthcare IT systems and prescribers to identify this medicine.
NHS UK identifiers
Browse tools
SNOMED CT and dm+d codes from NHS TRUD (Technology Reference data Update Distribution), licensed under the Open Government Licence v3.0. BNF codes from NHS Business Services Authority (NHSBSA). ATC codes from the WHO Collaborating Centre for Drug Statistics Methodology (whocc.no).
Active and completed clinical studies from ClinicalTrials.gov
Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine (NLM), National Institutes of Health (NIH). Data accessed via ClinicalTrials.gov API v2. Trial information is provided for research purposes and does not constitute medical advice.
Pharmacology and chemical data from DrugBank
Key facts
Drug status
Approved
Major interactions
None known
Half-life
3.5 to 5.8 days
Mechanism
Endogenous hydrophobic bile acids such as deoxycholic acid and chenodeoxycholic acid can exert hepatotoxic effects.
Food interactions
1 warning
Human targets
4 targets
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Absorption
5%
Half-life
3.5 to 5.8 days
[A256277][A256678]
Protein binding
70%
Volume of distribution
Metabolism
[A256277]…
Elimination
1%
Pharmacokinetic data: DrugBank · CC BY-NC 4.0
UDCA was first approved by the FDA in 1987 for dissolution of gallstones and for primary biliary cirrhosis in 1996.[A256272] UDCA works by replacing the hydrophobic or more toxic bile acids from the bile acid pool.[A256272]
[L44627]
It is used for the short-term treatment of radiolucent, noncalcified gallbladder stones in patients selected for elective cholecystectomy. It is also used to prevent gallstone formation in obese patients experiencing rapid weight loss.
[L44793]
Known interactions with other medications. Always consult a healthcare professional.
Showing 50 of 262 interactions
[L44752][L44793]
It is over 7500 mg/kg for mice.
[L44793]
Ursodeoxycholic acid (UDCA) is associated with rare hepatotoxicities, such as jaundice, worsening pre-existing liver diseases, and hepatitis.
[A256272][A256277]
There have been no reports of accidental or intentional overdosage with UDCA. A single oral dose of UDCA at 1.5 g/kg was lethal in hamsters. Single oral doses of UDCA at 10 g/kg in mice and dogs and 5 g/kg in rats were not lethal.
Symptoms of acute toxicity were salivation and vomiting in dogs, while ataxia, dyspnea, ptosis, agonal convulsions and coma were observed in hamsters.
[L44627]
UDCA can also change the hydrophobicity index of the bile acid pool: following oral administration, UDCA forms a major fraction of the human bile acid pool and competitively displaces the hydrophobic or more toxic bile acids.[A256272][A256267] It increases the absorption of hydrophilic bile acids.[A256267] There are several proposed mechanisms of choleretic actions of UDCA: UDCA increases intracellular calcium levels, stimulating transport proteins and vesicular exocytosis in cholestatic hepatocytes.[A256267] UDCA may also upregulate the expression of membrane transport proteins like the chloride-bicarbonate anion exchanger (AE2),[A256267][A256458] which is involved in biliary secretion and is often observed to be defective in primary biliary cholangitis.[A256448] In rats, UDCA reduced hepatic expression of major histocompatibility complex (MHC) class I antigens, suggesting immunomodulating effects.[A256267] UDCA acts as a partial agonist at the bile acid receptor, also known as the farnesoid X receptor (FXR), and has negligible effects on cholesterol and lipid synthesis.[A256272]
UDCA inhibits the absorption of cholesterol in the intestine and the secretion of cholesterol into bile, decreasing biliary cholesterol saturation.[A256267] UDCA increases bile acid flow and promotes the secretion of bile acids.[A256267][A256277][A256463]
How the body processes this drug — absorption, distribution, metabolism, and elimination
As the severity of liver disease increases, the extent of extraction decreases. During chronic administration of ursodiol, it becomes a major biliary and plasma bile acid. At a chronic dose of 13 to 15 mg/kg/day, ursodiol constitutes 30-50% of biliary and plasma bile acids.
[L44627]
[A256277][A256678]
[L44627]
[A256277][L44627]
[A256277]
UDCA is also decreased into bile. Glycine or taurine conjugates are absorbed in the small intestine via passive and active mechanisms. The conjugates can also be deconjugated in the ileum by intestinal enzymes, leading to the formation of free UDCA that can be reabsorbed and re-conjugated in the liver.
[L44627]
Nonabsorbed UDCA passes into the colon, where it undergoes 7-dehydroxylation by intestinal bacteria to lithocholic acid.
[A256728]
Some UDCA is epimerized to [chenodeoxycholic acid] via a 7-oxo intermediate.
Chenodeoxycholic acid also undergoes 7-dehydroxylation to form lithocholic acid. These metabolites are poorly soluble and excreted in the feces. A small portion of lithocholic acid is reabsorbed, conjugated in the liver with glycine or taurine, and sulfated at the 3 position.
The resulting sulfated lithocholic acid conjugates are excreted in bile and then lost in feces.
[L44627]
[A256678][L44627]
Proteins and enzymes this drug interacts with in the body
PMID:19218247
Most probably acts as a reductase in vivo since the oxidase activity measured in vitro is inhibited by physiological concentrations of NADPH .
PMID:14672942
Displays a broad positional specificity acting on positions 3, 17 and 20 of steroids and regulates the metabolism of hormones like estrogens and androgens .
PMID:10998348
Works in concert with the 5-alpha/5-beta-steroid reductases to convert steroid hormones into the 3-alpha/5-alpha and 3-alpha/5-beta-tetrahydrosteroids. Catalyzes the inactivation of the most potent androgen 5-alpha-dihydrotestosterone (5-alpha-DHT) to 5-alpha-androstane-3-alpha,17-beta-diol (3-alpha-diol) .
PMID:15929998 PMID:17034817 PMID:17442338 PMID:8573067
Also specifically able to produce 17beta-hydroxy-5alpha-androstan-3-one/5alphaDHT .
PMID:10998348
May also reduce conjugated steroids such as 5alpha-dihydrotestosterone sulfate .
PMID:19218247
Displays affinity for bile acids PMID:8486699
PMID:10858451 PMID:7929092 PMID:8424666 PMID:8631357
Does not reduce bilirubin IXbeta .
PMID:10858451
Uses the reactants NADH or NADPH depending on the pH; NADH is used at the acidic pH range (6-6.9) and NADPH at the alkaline range (8.5-8.7) .
PMID:7929092 PMID:8424666 PMID:8631357
NADPH, however, is the probable reactant in biological systems PMID:7929092
PMID:10471399 PMID:10556521
Mediates electrogenic uptake of vitamin C, with a stoichiometry of 2 Na(+) for each ascorbate PMID:10471399
Also regulates lipid and glucose homeostasis and is involved innate immune response .
PMID:10334992 PMID:10334993 PMID:21383957 PMID:22820415
The FXR-RXR heterodimer binds predominantly to farnesoid X receptor response elements (FXREs) containing two inverted repeats of the consensus sequence 5'-AGGTCA-3' in which the monomers are spaced by 1 nucleotide (IR-1) but also to tandem repeat DR1 sites with lower affinity, and can be activated by either FXR or RXR-specific ligands. It is proposed that monomeric nuclear receptors such as NR5A2/LRH-1 bound to coregulatory nuclear responsive element (NRE) halfsites located in close proximity to FXREs modulate transcriptional activity (By similarity). In the liver activates transcription of the corepressor NR0B2 thereby indirectly inhibiting CYP7A1 and CYP8B1 (involved in BA synthesis) implicating at least in part histone demethylase KDM1A resulting in epigenomic repression, and SLC10A1/NTCP (involved in hepatic uptake of conjugated BAs).
Activates transcription of the repressor MAFG (involved in regulation of BA synthesis) (By similarity). Activates transcription of SLC27A5/BACS and BAAT (involved in BA conjugation), ABCB11/BSEP (involved in bile salt export) by directly recruiting histone methyltransferase CARM1, and ABCC2/MRP2 (involved in secretion of conjugated BAs) and ABCB4 (involved in secretion of phosphatidylcholine in the small intestine) .
PMID:12754200 PMID:15471871 PMID:17895379
Activates transcription of SLC27A5/BACS and BAAT (involved in BA conjugation), ABCB11/BSEP (involved in bile salt export) by directly recruiting histone methyltransferase CARM1, and ABCC2/MRP2 (involved in secretion of conjugated BAs) and ABCB4 (involved in secretion of phosphatidylcholine in the small intestine) .
PMID:10514450 PMID:15239098 PMID:16269519
In the intestine activates FGF19 expression and secretion leading to hepatic CYP7A1 repression .
PMID:12815072 PMID:19085950
The function also involves the coordinated induction of hepatic KLB/beta-klotho expression (By similarity). Regulates transcription of liver UGT2B4 and SULT2A1 involved in BA detoxification; binding to the UGT2B4 promoter seems to imply a monomeric transactivation independent of RXRA .
PMID:12806625 PMID:16946559
Modulates lipid homeostasis by activating liver NR0B2/SHP-mediated repression of SREBF1 (involved in de novo lipogenesis), expression of PLTP (involved in HDL formation), SCARB1 (involved in HDL hepatic uptake), APOE, APOC1, APOC4, PPARA (involved in beta-oxidation of fatty acids), VLDLR and SDC1 (involved in the hepatic uptake of LDL and IDL remnants), and inhibiting expression of MTTP (involved in VLDL assembly .
PMID:12554753 PMID:12660231 PMID:15337761
Increases expression of APOC2 (promoting lipoprotein lipase activity implicated in triglyceride clearance) .
PMID:11579204
Transrepresses APOA1 involving a monomeric competition with NR2A1 for binding to a DR1 element .
PMID:11927623 PMID:21804189
Also reduces triglyceride clearance by inhibiting expression of ANGPTL3 and APOC3 (both involved in inhibition of lipoprotein lipase) .
PMID:12891557
Involved in glucose homeostasis by modulating hepatic gluconeogenesis through activation of NR0B2/SHP-mediated repression of respective genes.
Modulates glycogen synthesis (inducing phosphorylation of glycogen synthase kinase-3) (By similarity). Modulates glucose-stimulated insulin secretion and is involved in insulin resistance .
PMID:20447400
Involved in intestinal innate immunity. Plays a role in protecting the distal small intestine against bacterial overgrowth and preservation of the epithelial barrier (By similarity).
Down-regulates inflammatory cytokine expression in several types of immune cells including macrophages and mononuclear cells .
PMID:21242261
Mediates trans-repression of TLR4-induced cytokine expression; the function seems to require its sumoylation and prevents N-CoR nuclear receptor corepressor clearance from target genes such as IL1B and NOS2 .
PMID:19864602
Involved in the TLR9-mediated protective mechanism in intestinal inflammation. Plays an anti-inflammatory role in liver inflammation; proposed to inhibit pro-inflammatory (but not antiapoptotic) NF-kappa-B signaling) (By similarity)
Enzymes involved in drug metabolism — important for understanding drug interactions
Proteins that transport this drug across cell membranes
PMID:15791618 PMID:16332456 PMID:18985798 PMID:19228692 PMID:20010382 PMID:20398791 PMID:22262466 PMID:24711118 PMID:29507376 PMID:32203132
Transports taurine-conjugated bile salts more rapidly than glycine-conjugated bile salts .
PMID:16332456
Also transports non-bile acid compounds, such as pravastatin and fexofenadine in an ATP-dependent manner and may be involved in their biliary excretion PMID:15901796 PMID:18245269
PMID:19129463 PMID:7557095
Responsible for intestinal absorption of bile acids (By similarity). Transports dehydroepiandrosterone 3-sulfate (DHEAS), a major circulating steroid secreted by the adrenal cortex, as well as estrone 3-sulfate and 17beta-estradiol 17-O-(beta-D-glucuronate) .
PMID:11159893 PMID:12568656 PMID:19129463 PMID:23918469 PMID:25560245 PMID:9539145
Mediates apical uptake of all-trans-retinol (atROL) across human retinal pigment epithelium, which is essential to maintaining the integrity of the visual cycle and thus vision .
PMID:25560245
Involved in the uptake of clinically used drugs .
PMID:17301733 PMID:20686826 PMID:27777271
Capable of thyroid hormone transport (both T3 or 3,3',5'-triiodo-L-thyronine, and T4 or L-tyroxine) .
PMID:19129463 PMID:20358049
Also transports prostaglandin E2 .
PMID:19129463
Plays roles in blood-brain and -cerebrospinal fluid barrier transport of organic anions and signal mediators, and in hormone uptake by neural cells (By similarity). May also play a role in the reuptake of neuropeptides such as substance P/TAC1 and vasoactive intestinal peptide/VIP released from retinal neurons .
PMID:25132355
May play an important role in plasma and tissue distribution of the structurally diverse chemotherapeutic drugs methotrexate and paclitaxel .
PMID:23243220
Shows a pH-sensitive substrate specificity which may be ascribed to the protonation state of the binding site and leads to a stimulation of substrate transport in an acidic microenvironment .
PMID:19129463
Hydrogencarbonate/HCO3(-) acts as the probable counteranion that exchanges for organic anions .
PMID:19129463
May contribute to regulate the transport of organic compounds in testis across the blood-testis-barrier (Probable)
PMID:10220572 PMID:10421658 PMID:11500505 PMID:16332456
Mediates hepatobiliary excretion of mono- and bis-glucuronidated bilirubin molecules and therefore play an important role in bilirubin detoxification .
PMID:10421658
Also mediates hepatobiliary excretion of others glucuronide conjugates such as 17beta-estradiol 17-glucosiduronic acid and leukotriene C4 .
PMID:11500505
Transports sulfated bile salt such as taurolithocholate sulfate .
PMID:16332456
Transports various anticancer drugs, such as anthracycline, vinca alkaloid and methotrexate and HIV-drugs such as protease inhibitors .
PMID:10220572 PMID:11500505 PMID:12441801
Confers resistance to several anti-cancer drugs including cisplatin, doxorubicin, epirubicin, methotrexate, etoposide and vincristine PMID:10220572 PMID:11500505
PMID:11856762 PMID:12523936 PMID:12835412 PMID:12883481 PMID:15364914 PMID:15454390 PMID:16282361 PMID:17959747 PMID:18300232 PMID:26721430
Mediates the ATP-dependent efflux of glutathione conjugates such as leukotriene C4 (LTC4) and leukotriene B4 (LTB4) too. The presence of GSH is necessary for the ATP-dependent transport of LTB4, whereas GSH is not required for the transport of LTC4 .
PMID:17959747
Mediates the cotransport of bile acids with reduced glutathione (GSH) .
PMID:12523936 PMID:12883481 PMID:16282361
Transports a wide range of drugs and their metabolites, including anticancer, antiviral and antibiotics molecules .
PMID:11856762 PMID:12105214 PMID:15454390 PMID:17344354 PMID:18300232
Confers resistance to anticancer agents such as methotrexate PMID:11106685
PMID:7592981 PMID:9458785 PMID:9856990
Transports various bile acids, unconjugated or conjugated, such as cholate and taurocholate .
PMID:7592981 PMID:9458785 PMID:9856990
Also responsible for bile acid transport in the renal proximal tubules, a salvage mechanism that helps conserve bile acids (Probable). Works collaboratively with the Na(+)-taurocholate cotransporting polypeptide (NTCP), the organic solute transporter (OST), and the bile salt export pump (BSEP), to ensure efficacious biological recycling of bile acids during enterohepatic circulation PMID:33222321
PMID:14660639 PMID:24867799 PMID:34060352 PMID:8132774
It is strictly dependent on the extracellular presence of sodium .
PMID:14660639 PMID:24867799 PMID:34060352 PMID:8132774
It exhibits broad substrate specificity and transports various bile acids, such as taurocholate, cholate, as well as non-bile acid organic compounds, such as estrone sulfate .
PMID:14660639 PMID:34060352
Works collaboratively with the ileal transporter (NTCP2), the organic solute transporter (OST), and the bile salt export pump (BSEP), to ensure efficacious biological recycling of bile acids during enterohepatic circulation PMID:33222321
PMID:16606687 PMID:19321737 PMID:22159084 PMID:22627094
Plays a role in the chloride and bicarbonate homeostasis during sperm epididymal maturation and capacitation (By similarity)
ATC A05AA02
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
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Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Linked compound data from DrugBank Open Data (CC BY-NC 4.0)
Ursodeoxycholic acid
Additional database identifiers
Drugs Product Database (DPD)
952
ChemSpider
29131
BindingDB
53721
PDB
IU5
ZINC
ZINC000003914809
HUGO Gene Nomenclature Committee (HGNC)
HGNC:385
GenAtlas
AKR1C2
GeneCards
AKR1C2
GenBank Gene Database
U05598
GenBank Protein Database
531160
UniProt Accession
AK1C2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1062
GenAtlas
BLVRA
GeneCards
BLVRA
GenBank Gene Database
X93086
GenBank Protein Database
1246749
UniProt Accession
BIEA_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:10973
GeneCards
SLC23A2
UniProt Accession
S23A2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:7967
GenAtlas
NR1H4
GeneCards
NR1H4
GenBank Gene Database
U68233
GenBank Protein Database
1546084
Guide to Pharmacology
603
UniProt Accession
NR1H4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2637
GenAtlas
CYP3A4
GeneCards
CYP3A4
GenBank Gene Database
M18907
Guide to Pharmacology
1337
UniProt Accession
CP3A4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:17450
GeneCards
CYP3A43
GenBank Gene Database
AF319634
GenBank Protein Database
12642642
UniProt Accession
CP343_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2638
GenAtlas
CYP3A5
GeneCards
CYP3A5
GenBank Gene Database
J04813
GenBank Protein Database
181346
Guide to Pharmacology
1338
UniProt Accession
CP3A5_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2640
GeneCards
CYP3A7
GenBank Gene Database
D00408
GenBank Protein Database
220149
UniProt Accession
CP3A7_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:42
GenAtlas
ABCB11
GeneCards
ABCB11
GenBank Gene Database
AF091582
GenBank Protein Database
3873243
Guide to Pharmacology
778
UniProt Accession
ABCBB_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:10956
GeneCards
SLCO1A2
GenBank Gene Database
U21943
GenBank Protein Database
885978
Guide to Pharmacology
1219
UniProt Accession
SO1A2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:53
GenAtlas
ABCC2
GeneCards
ABCC2
GenBank Gene Database
U63970
GenBank Protein Database
1764162
Guide to Pharmacology
780
UniProt Accession
MRP2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:55
GenAtlas
ABCC4
GeneCards
ABCC4
GenBank Gene Database
AF071202
GenBank Protein Database
3335173
Guide to Pharmacology
782
UniProt Accession
MRP4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:10906
GeneCards
SLC10A2
GenBank Gene Database
U10417
GenBank Protein Database
595399
Guide to Pharmacology
960
UniProt Accession
NTCP2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:10905
GeneCards
SLC10A1
GenBank Gene Database
L21893
GenBank Protein Database
410214
Guide to Pharmacology
959
UniProt Accession
NTCP_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3018
GeneCards
SLC26A3
UniProt Accession
S26A3_HUMAN
International reference pricing
Reference pricing from DrugBank. Prices are indicative and may not reflect current UK costs.
Source: DrugBank. Used under CC BY-NC 4.0 academic licence for non-commercial purposes.
DrugBank citations
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