Retigabine 400mg tablets
Ezogabine (D23129) is a close structural analog of the centrally acting analgesic flupitrine.
Official documents, adverse reaction reporting, and safety monitoring
Report a side effect
Submit a Yellow Card report to the MHRA
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.
View Drug Analysis Profile
Suspected adverse reactions reported for Retigabine
Browse all iDAP reports
Interactive Drug Analysis Profiles for all medicines
Report a side effect
Submit a Yellow Card report to the MHRA
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
The European Medicines Agency (EMA) collects suspected adverse reaction reports from across the EU/EEA through the EudraVigilance system. Search for safety data on this medicine.
View EudraVigilance report
Suspected adverse reactions reported for Retigabine
About EudraVigilance
Learn about EU pharmacovigilance and safety monitoring
EudraVigilance data is published by the European Medicines Agency (EMA). A suspected adverse reaction is not necessarily caused by the medicine.
1 branded products available
WHO defined daily dose (DDD)
900 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
Retigabine
Source: British National Formulary, NICE. Joint Formulary Committee. 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
1 found
Half-life
7.5 hours
Mechanism
Ezogabine has a novel mechanism of action that involves opening of neuronal Kv7.
Food interactions
1 warning
Human targets
4 targets
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Absorption
60%
Half-life
7.5 hours
Protein binding
80%
Volume of distribution
8.7 L/kg
Metabolism
Elimination
85%
Clearance
0.58 - 0.76 L/h
Pharmacokinetic data: DrugBank · CC BY-NC 4.0
Known interactions with other medications. Always consult a healthcare professional.
Showing 50 of 1666 interactions
Lethal Dose, chronic, oral, rat = 5.1 mg/kg/day, 90-day;
Most common adverse effects that lead to discontinuation of therapy include dizziness and somnolence.
How the body processes this drug — absorption, distribution, metabolism, and elimination
Tmax, single oral dose = 30-120 minutes;
Time to steady state = 3 days
However, the product of the N-acetyl pathway is a weak, active metabolite referred to as NAMR. The enzyme that is involved in the N-acetyl pathway is called N-acetyltransferase 2. The pharmacokinetics of NAMR and ezogabine are similar.
The cytochrome P450 enzyme system is not involved with the metabolism of ezogabine.
Proteins and enzymes this drug interacts with in the body
PMID:16319223 PMID:27564677 PMID:28793216 PMID:9872318
M-channel is composed of pore-forming subunits KCNQ2 and KCNQ3 assembled as heterotetramers .
PMID:14534157 PMID:16319223 PMID:27564677 PMID:9872318
The native M-current has a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs .
PMID:14534157 PMID:16319223 PMID:28793216
M-channel is selectively permeable in vitro to other cations besides potassium, in decreasing order of affinity K(+) > Rb(+) > Cs(+) > Na(+) .
PMID:28793216
M-channel association with SLC5A3/SMIT1 alters channel ion selectivity, increasing Na(+) and Cs(+) permeation relative to K(+) .
PMID:28793216
Suppressed by activation of M1 muscarinic acetylcholine receptors .
PMID:10713961
KCNQ3 also associates with KCNQ5 to form a functional channel in vitro and may also contribute to the M-current in brain PMID:11159685
PMID:24277843 PMID:28793216 PMID:9836639
M-channel is composed of pore-forming subunits KCNQ2 and KCNQ3 assembled as heterotetramers .
PMID:10781098 PMID:14534157 PMID:32884139 PMID:37857637 PMID:9836639
The native M-current has a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs .
PMID:14534157 PMID:28793216 PMID:9836639
KCNQ2-KCNQ3 M-channel is selectively permeable in vitro to other cations besides potassium, in decreasing order of affinity K(+) > Rb(+) > Cs(+) > Na(+) .
PMID:28793216
M-channel association with SLC5A3/SMIT1 alters channel ion selectivity, increasing Na(+) and Cs(+) permeation relative to K(+) .
PMID:28793216
Suppressed by activation of the muscarinic acetylcholine receptor CHRM1 PMID:10684873 PMID:10713961
PMID:10025409 PMID:34767770
KCNQ4/Kv7.4 channel is composed of 4 pore-forming subunits assembled as tetramers .
PMID:34767770
Promotes the outflow of potassium ions in the repolarization phase of action potential which plays a role in regulating membrane potential of excitable cells .
PMID:10025409 PMID:11245603 PMID:34767770
The channel conducts a slowly activating and deactivating current .
PMID:10025409 PMID:11245603
Current often shows some inward rectification at positive potentials .
PMID:10025409
Channel may be selectively permeable in vitro to other cations besides potassium, in decreasing order of affinity K(+) = Rb(+) > Cs(+) > Na(+) .
PMID:10025409
Important for normal physiological function of inner ear such as sensory perception of sound PMID:10025409 PMID:10369879
PMID:10787416 PMID:10816588 PMID:11159685 PMID:28669405
Associates with KCNQ3/Kv7.3 pore-forming subunit to form a potassium channel which contributes to M-type current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons .
PMID:10816588 PMID:11159685
Contributes, with other potassium channels, to the molecular diversity of a heterogeneous population of M-channels, varying in kinetic and pharmacological properties, which underlie this physiologically important current .
PMID:10816588
Also forms a functional channel with KCNQ1/Kv7.1 subunit that may contribute to vasoconstriction and hypertension .
PMID:24855057
Channel may be selectively permeable in vitro to other cations besides potassium, in decreasing order of affinity K(+) = Rb(+) > Cs(+) > Na(+) .
PMID:10816588
Similar to the native M-channel, KCNQ3-KCNQ5 potassium channel is suppressed by activation of the muscarinic acetylcholine receptor CHRM1 PMID:10816588
Enzymes involved in drug metabolism — important for understanding drug interactions
ATC N03AX21
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Show
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Linked compound data from DrugBank Open Data (CC BY-NC 4.0)
Additional database identifiers
ChemSpider
108740
BindingDB
50143558
PDB
FBX
ZINC
ZINC000000016154
HUGO Gene Nomenclature Committee (HGNC)
HGNC:6297
GenAtlas
KCNQ3
GeneCards
KCNQ3
GenBank Gene Database
AF071491
Guide to Pharmacology
562
UniProt Accession
KCNQ3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:6296
GenAtlas
KCNQ2
GeneCards
KCNQ2
GenBank Gene Database
D82346
GenBank Protein Database
1841342
Guide to Pharmacology
561
UniProt Accession
KCNQ2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:6298
GenAtlas
KCNQ4
GeneCards
KCNQ4
GenBank Gene Database
AF105202
Guide to Pharmacology
563
UniProt Accession
KCNQ4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:6299
GenAtlas
KCNQ5
GeneCards
KCNQ5
GenBank Gene Database
AF249278
Guide to Pharmacology
564
UniProt Accession
KCNQ5_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:12530
GeneCards
UGT1A1
GenBank Gene Database
M57899
GenBank Protein Database
184473
Guide to Pharmacology
2990
UniProt Accession
UD11_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:12535
GeneCards
UGT1A3
GenBank Gene Database
M84127
GenBank Protein Database
340135
UniProt Accession
UD13_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:12536
GeneCards
UGT1A4
GenBank Gene Database
M57951
GenBank Protein Database
184475
UniProt Accession
UD14_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:12541
GeneCards
UGT1A9
GenBank Gene Database
S55985
GenBank Protein Database
7690346
UniProt Accession
UD19_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:7646
GeneCards
NAT2
GenBank Gene Database
D90040
GenBank Protein Database
219412
UniProt Accession
ARY2_HUMAN
DrugBank citations
If you use DrugBank data in your research, please cite the following publications: