Terazosin 10mg tablets
Requires a prescription from a doctor or prescriber
Terazosin is a quinazoline derivative alpha-1-selective adrenergic blocking agent indicated for benign prostatic hyperplasia and hypertension[FDA Label][A176831].
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 Terazosin
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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.
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Suspected adverse reactions reported for Terazosin
About EudraVigilance
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EudraVigilance data is published by the European Medicines Agency (EMA). A suspected adverse reaction is not necessarily caused by the medicine.
19 branded products available
MHRA licensed products
View all licensed products for Terazosin on the MHRA register
Hytrin 10mg tablets
Terazosin 10mg tablets
Terazosin 10mg tablets
Terazosin 10mg tablets
Terazosin 10mg tablets
Terazosin 10mg tablets
This is the NHS Drug Tariff indicative price used for reimbursement purposes. It may not reflect the price paid by patients or pharmacies.
View full Drug TariffSource: NHS Drug Tariff via NHSBSA. Derived from dm+d VMPP (Virtual Medicinal Product Pack) pricing data. Contains public sector information licensed under the Open Government Licence v3.0.
WHO defined daily dose (DDD)
5 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
Terazosin
Source: British National Formulary, NICE. Joint Formulary Committee. Contains public sector information licensed under the Open Government Licence v3.0.
NICE clinical guidance(1)
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
64 found
Half-life
12 hours
Mechanism
Terazosin is selective for alpha-1-adrenoceptors but not their individual subtypes[A5212,A5457].
Food interactions
1 warning
Human targets
7 targets
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Absorption
90%
[A176831]
Half-life
12 hours
Protein binding
90-94%
[A176831]
Volume of distribution
25L
[A176831]
Metabolism
[A176831]
The metabolites recovered include 6-O-demethyl terazosin, 7-O-methyl terazosin, a piperozine derivative, and a diamine derivative.
[A176831]…
Elimination
10%
[A176831]…
Clearance
80mL/min
[A176831]
Pharmacokinetic data: DrugBank · CC BY-NC 4.0
Known interactions with other medications. Always consult a healthcare professional.
Showing 50 of 704 interactions
Because terazosin is highly protein bound, dialysis is unlikely to provide benefit to overdosing patients[FDA Label].
The oral LD50 in mice is 5500mg/kgMSDS.
It has also been shown that catecholamines induce factors responsible for mitogenesis and alpha-1-adrenergic receptor blockers inhibit this effect[A176837].
A final long term mechanism of terazosin and other alpha-1-adrenergic receptor blockers is the induction of apoptosis of prostate cells[A176837]. Treatment with terazosin enhances the expression of transforming growth factor beta-1 (TGF-beta1), which upregulates p27kip1, and the caspase cascade[A176837][A176840].
How the body processes this drug — absorption, distribution, metabolism, and elimination
[A176831]
[A176831]
[A176831]
[A176831]
[A176831]
The metabolites recovered include 6-O-demethyl terazosin, 7-O-methyl terazosin, a piperozine derivative, and a diamine derivative.
[A176831]
[A176831]
40% of the total dose is eliminated in urine and 60% of the total dose is eliminated in the feces[FDA Label].
[A176831]
[A176831]
Proteins and enzymes this drug interacts with in the body
PMID:10219239 PMID:10753933 PMID:10790218 PMID:10837251 PMID:11997281 PMID:12063277 PMID:18559421 PMID:22314138 PMID:22359612 PMID:26363003 PMID:27916661 PMID:9230439 PMID:9351446 PMID:9765245
Channel properties are modulated by cAMP and subunit assembly .
PMID:10837251
Characterized by unusual gating kinetics by producing relatively small outward currents during membrane depolarization and large inward currents during subsequent repolarization which reflect a rapid inactivation during depolarization and quick recovery from inactivation but slow deactivation (closing) during repolarization .
PMID:10219239 PMID:10753933 PMID:10790218 PMID:10837251 PMID:11997281 PMID:12063277 PMID:18559421 PMID:22314138 PMID:22359612 PMID:26363003 PMID:27916661 PMID:9230439 PMID:9351446 PMID:9765245
Forms a stable complex with KCNE1 or KCNE2, and that this heteromultimerization regulates inward rectifier potassium channel activity PMID:10219239 PMID:9230439
Proteins that transport this drug across cell membranes
PMID:2897240 PMID:35970996 PMID:8898203 PMID:9038218 PMID:35507548
Catalyzes the flop of phospholipids from the cytoplasmic to the exoplasmic leaflet of the apical membrane. Participates mainly to the flop of phosphatidylcholine, phosphatidylethanolamine, beta-D-glucosylceramides and sphingomyelins .
PMID:8898203
Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells PMID:2897240 PMID:35970996 PMID:9038218
ATC G04CA03
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)
Terazosin
Additional database identifiers
Drugs Product Database (DPD)
11368
Drugs Product Database (DPD)
1262
ChemSpider
5208
BindingDB
50033111
HUGO Gene Nomenclature Committee (HGNC)
HGNC:277
GenAtlas
ADRA1A
GeneCards
ADRA1A
GenBank Gene Database
D25235
GenBank Protein Database
433201
Guide to Pharmacology
22
UniProt Accession
ADA1A_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:278
GenAtlas
ADRA1B
GeneCards
ADRA1B
GenBank Gene Database
M99589
Guide to Pharmacology
23
UniProt Accession
ADA1B_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:280
GenAtlas
ADRA1D
GeneCards
ADRA1D
GenBank Gene Database
M76446
GenBank Protein Database
177807
Guide to Pharmacology
24
UniProt Accession
ADA1D_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:11766
GenAtlas
TGFB1
GeneCards
TGFB1
GenBank Gene Database
X05839
GenBank Protein Database
1212989
UniProt Accession
TGFB1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:6251
GenAtlas
KCNH2
GeneCards
KCNH2
GenBank Gene Database
U04270
GenBank Protein Database
487738
Guide to Pharmacology
572
UniProt Accession
KCNH2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:18862
GenAtlas
KCNH6
GeneCards
KCNH6
GenBank Gene Database
AF311913
GenBank Protein Database
11878259
Guide to Pharmacology
573
UniProt Accession
KCNH6_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:18863
GenAtlas
KCNH7
GeneCards
KCNH7
GenBank Gene Database
AF032897
GenBank Protein Database
4104136
UniProt Accession
KCNH7_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:40
GenAtlas
ABCB1
GeneCards
ABCB1
GenBank Gene Database
M14758
GenBank Protein Database
307180
Guide to Pharmacology
768
UniProt Accession
MDR1_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.
Patent information
2 active patents, 2 expired
Source: DrugBank · CC BY-NC 4.0. Patent data sourced from national patent offices. Expiry dates may not reflect extensions, regulatory exclusivity periods, or legal challenges.
DrugBank citations
If you use DrugBank data in your research, please cite the following publications: