Quetiapine 100mg tablets
Requires a prescription from a doctor or prescriber
Drugs used in psychoses and related disorders
Official documents, adverse reaction reporting, and safety monitoring
Report a side effect
Submit a Yellow Card report to the MHRA
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.
View Drug Analysis Profile
Suspected adverse reactions reported for Quetiapine
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 Quetiapine
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.
36 branded products available
Part of the Seroquel brand family (generic: Quetiapine)
MHRA licensed products
View all licensed products for Quetiapine on the MHRA register
Seroquel 100mg tablets
Seroquel 100mg tablets
Seroquel 100mg tablets
Seroquel 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg tablets
Quetiapine 100mg 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)
400 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
Quetiapine
Source: British National Formulary, NICE. Joint Formulary Committee. Contains public sector information licensed under the Open Government Licence v3.0.
NICE clinical guidance(6)
Bipolar disorder: assessment and management (CG185)
Aripiprazole for the treatment of schizophrenia in people aged 15 to 17 years (TA213)
Aripiprazole for treating moderate to severe manic episodes in adolescents with bipolar I disorder (TA292)
Schizophrenia: lurasidone (ESNM48)
Parkinson's disease in adults (NG71)
Depression in adults: treatment and management (NG222)
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
43 found
Half-life
6-7 hours
Mechanism
Although the mechanism of action of quetiapine is not fully understood, several proposed mechanisms exist.
Food interactions
2 warnings
Human targets
24 targets
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Absorption
48 hours
[L50828]…
Half-life
6-7 hours
[A185441][L8546]
Protein binding
83%
[A14994][L8546]
Volume of distribution
4 L/kg
[L8546]
Metabolism
Elimination
1%
Clearance
39.11 L/h
Pharmacokinetic data: DrugBank · CC BY-NC 4.0
[L8546]
Some off-label uses for this drug include the management of post-traumatic stress disorder (PTSD), generalized anxiety disorder, and psychosis associated with Parkinson's disease.[A185438,A185447,T685]
Known interactions with other medications. Always consult a healthcare professional.
Showing 50 of 2255 interactions
[L8594]
Overdose information
Some signs and symptoms of a quetiapine overdose include sedation, drowsiness, tachycardia, and hypotension. Clinical trials demonstrate that overdoses of up to 30 grams of quetiapine did not result in death. A lethal outcome was reported in a clinical trial after an overdose of 13.6 grams of quetiapine. In the case of an acute overdose, ensure to maintain an airway and provide adequate ventilation and oxygenation.
Gastric lavage following intubation (if necessary) along with activated charcoal and a laxative may be considered. The possibility of obtundation, seizure or dystonic reaction of the head and neck following overdose may create a risk of aspiration with induced emesis. Cardiac monitoring should also take place.
[L8546]
A note on QT-interval prolongation in an overdose
Postmarketing reports reveal increases in the cardiac QT interval in cases of quetiapine overdose, concomitant illness, and in those taking drugs that increase QT interval or affect electrolyte levels.
[L8546]
Note that disopyramide, procainamide, and quinidine may exert additive QT-prolonging effects when administered in patients who have overdosed with quetiapine, and should be avoided.
[A185834][A185837][L8546]
A note on suicidality in young patients and administration in the elderly
Quetiapine can cause suicidal thinking or behavior in children and adolescents and should not be given to children under 10 years of age. It is important to monitor for suicidality if this drug is given to younger patients. In addition, this drug is not indicated for the treatment of psychosis related to dementia due to an increased death rate in elderly patients taking this drug.[L8546]
How the body processes this drug — absorption, distribution, metabolism, and elimination
[L50828]
Steady-state is achieved within 48 hours [A185840] and peak plasma concentrations are achieved within 1.5 hours.
[L50828]
The steady-state Cmax of quetiapine in Han Chinese patients with schizophrenia after a 300 mg oral dose of the extended released formulation was approximately 467 ng/mL and the AUC at steady-state was 5094 ng·h/mL.
[A185858]
While the absolute bioavailability has not been fully elucidated and is reported to be low,[A14994] the tablet formulation is 100% bioavailable relative to solution.
[L50828]
Absorption of quetiapine is affected by food, with Cmax increased by 25% and AUC increased by 15%.
[L50828]
[A185441][L8546]
[A14994][L8546]
[L8546]
CYP2D6 also regulates the metabolism of quetiapine. In one study, three metabolites of N-desalkylquetiapine were identified. Two of the metabolites were identified as N-desalkylquetiapine sulfoxide and 7-hydroxy-N-desalkylquetiapine.
CYP2D6 has been found to be responsible for metabolism of quetiapine to 7-hydroxy-N-desalkylquetiapine, a pharmacologically active metabolite. Individual differences in CYP2D6 metabolism may be present, which may affect the concentrations of the active metabolite.
[A1118][A183863][L8546]
[A14994][L8546]
[A185846]
Elderly patients may require lower doses of quetiapine, as clearance in these patients may be reduced by up to 50%.
[L8546]
Those with liver dysfunction may also require lower doses.
[A185756]
Proteins and enzymes this drug interacts with in the body
PMID:1330647 PMID:18703043 PMID:19057895 PMID:21645528 PMID:22300836 PMID:35084960 PMID:38552625
Also functions as a receptor for various drugs and psychoactive substances, including mescaline, psilocybin, 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI) and lysergic acid diethylamide (LSD) .
PMID:28129538 PMID:35084960
Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors .
PMID:28129538 PMID:35084960
HTR2A is coupled to G(q)/G(11) G alpha proteins and activates phospholipase C-beta, releasing diacylglycerol (DAG) and inositol 1,4,5-trisphosphate (IP3) second messengers that modulate the activity of phosphatidylinositol 3-kinase and promote the release of Ca(2+) ions from intracellular stores, respectively .
PMID:18703043 PMID:28129538 PMID:35084960
Beta-arrestin family members inhibit signaling via G proteins and mediate activation of alternative signaling pathways .
PMID:28129538 PMID:35084960
Affects neural activity, perception, cognition and mood .
PMID:18297054
Plays a role in the regulation of behavior, including responses to anxiogenic situations and psychoactive substances. Plays a role in intestinal smooth muscle contraction, and may play a role in arterial vasoconstriction (By similarity)
PMID:21645528
Positively regulates postnatal regression of retinal hyaloid vessels via suppression of VEGFR2/KDR activity, downstream of OPN5 (By similarity)
PMID:22957663 PMID:3138543 PMID:33762731 PMID:37935376 PMID:37935377 PMID:8138923 PMID:8393041
Also functions as a receptor for various drugs and psychoactive substances .
PMID:22957663 PMID:3138543 PMID:33762731 PMID:38552625 PMID:8138923 PMID:8393041
Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors, such as adenylate cyclase .
PMID:22957663 PMID:3138543 PMID:33762731 PMID:8138923 PMID:8393041
HTR1A is coupled to G(i)/G(o) G alpha proteins and mediates inhibitory neurotransmission: signaling inhibits adenylate cyclase activity and activates a phosphatidylinositol-calcium second messenger system that regulates the release of Ca(2+) ions from intracellular stores .
PMID:33762731 PMID:35610220
Beta-arrestin family members regulate signaling by mediating both receptor desensitization and resensitization processes .
PMID:18476671 PMID:20363322 PMID:20945968
Plays a role in the regulation of 5-hydroxytryptamine release and in the regulation of dopamine and 5-hydroxytryptamine metabolism .
PMID:18476671 PMID:20363322 PMID:20945968
Plays a role in the regulation of dopamine and 5-hydroxytryptamine levels in the brain, and thereby affects neural activity, mood and behavior .
PMID:18476671 PMID:20363322 PMID:20945968
Plays a role in the response to anxiogenic stimuli PMID:18476671 PMID:20363322 PMID:20945968
PMID:10452531 PMID:1315531 PMID:1328844 PMID:1348246 PMID:1351684 PMID:1559993 PMID:1565658 PMID:1610347 PMID:23519210 PMID:23519215 PMID:29925951 PMID:8218242
Also functions as a receptor for ergot alkaloid derivatives, various anxiolytic and antidepressant drugs and other psychoactive substances, such as lysergic acid diethylamide (LSD) .
PMID:23519210 PMID:23519215 PMID:29925951
Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors, such as adenylate cyclase .
PMID:10452531 PMID:1315531 PMID:1328844 PMID:1348246 PMID:1351684 PMID:1559993 PMID:1565658 PMID:1610347 PMID:23519210 PMID:23519215 PMID:29925951 PMID:8218242
HTR1B is coupled to G(i)/G(o) G alpha proteins and mediates inhibitory neurotransmission by inhibiting adenylate cyclase activity .
PMID:29925951 PMID:35610220
Arrestin family members inhibit signaling via G proteins and mediate activation of alternative signaling pathways .
PMID:29925951
Regulates the release of 5-hydroxytryptamine, dopamine and acetylcholine in the brain, and thereby affects neural activity, nociceptive processing, pain perception, mood and behavior .
PMID:18476671 PMID:20945968
Besides, plays a role in vasoconstriction of cerebral arteries PMID:15853772
PMID:10452531 PMID:1565658 PMID:1652050 PMID:33762731
Also functions as a receptor for ergot alkaloid derivatives, various anxiolytic and antidepressant drugs and other psychoactive substances .
PMID:10452531 PMID:1565658 PMID:1652050 PMID:33762731
Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors, such as adenylate cyclase .
PMID:10452531 PMID:1565658 PMID:1652050 PMID:33762731
HTR1D is coupled to G(i)/G(o) G alpha proteins and mediates inhibitory neurotransmission by inhibiting adenylate cyclase activity .
PMID:33762731
Regulates the release of 5-hydroxytryptamine in the brain, and thereby affects neural activity .
PMID:18476671 PMID:20945968
May also play a role in regulating the release of other neurotransmitters .
PMID:18476671 PMID:20945968
May play a role in vasoconstriction PMID:18476671 PMID:20945968
Enzymes involved in drug metabolism — important for understanding drug interactions
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
Involved compounds
ATC N05AH04
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)
Quetiapine
Additional database identifiers
Drugs Product Database (DPD)
11718
ChemSpider
4827
BindingDB
50095890
Guide to Pharmacology
50
ZINC
ZINC000019632628
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5293
GenAtlas
HTR2A
GeneCards
HTR2A
GenBank Gene Database
S42168
GenBank Protein Database
36431
Guide to Pharmacology
6
UniProt Accession
5HT2A_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3023
GenAtlas
DRD2
GeneCards
DRD2
GenBank Gene Database
M30625
GenBank Protein Database
181432
Guide to Pharmacology
215
UniProt Accession
DRD2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5286
GenAtlas
HTR1A
GeneCards
HTR1A
GenBank Gene Database
M28269
GenBank Protein Database
189928
Guide to Pharmacology
1
UniProt Accession
5HT1A_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5287
GenAtlas
HTR1B
GeneCards
HTR1B
GenBank Gene Database
D10995
GenBank Protein Database
219679
Guide to Pharmacology
2
UniProt Accession
5HT1B_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5289
GenAtlas
HTR1D
GeneCards
HTR1D
GenBank Gene Database
M89955
GenBank Protein Database
177772
Guide to Pharmacology
3
UniProt Accession
5HT1D_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5291
GenAtlas
HTR1E
GeneCards
HTR1E
GenBank Gene Database
M91467
GenBank Protein Database
177774
Guide to Pharmacology
4
UniProt Accession
5HT1E_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5295
GenAtlas
HTR2C
GeneCards
HTR2C
GenBank Gene Database
M81778
GenBank Protein Database
338028
Guide to Pharmacology
8
UniProt Accession
5HT2C_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5297
GenAtlas
HTR3A
GeneCards
HTR3A
GenBank Gene Database
D49394
GenBank Protein Database
681914
Guide to Pharmacology
373
UniProt Accession
5HT3A_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5301
GenAtlas
HTR6
GeneCards
HTR6
GenBank Gene Database
L41147
GenBank Protein Database
1162924
Guide to Pharmacology
11
UniProt Accession
5HT6R_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5302
GenAtlas
HTR7
GeneCards
HTR7
GenBank Gene Database
U68487
GenBank Protein Database
1857143
Guide to Pharmacology
12
UniProt Accession
5HT7R_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3020
GenAtlas
DRD1
GeneCards
DRD1
GenBank Gene Database
X55760
GenBank Protein Database
30397
Guide to Pharmacology
214
UniProt Accession
DRD1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3026
GenAtlas
DRD5
GeneCards
DRD5
GenBank Gene Database
X58454
GenBank Protein Database
32049
Guide to Pharmacology
218
UniProt Accession
DRD5_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3024
GenAtlas
DRD3
GeneCards
DRD3
GenBank Gene Database
U32499
GenBank Protein Database
927342
Guide to Pharmacology
216
UniProt Accession
DRD3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:3025
GenAtlas
DRD4
GeneCards
DRD4
GenBank Gene Database
L12398
GenBank Protein Database
291946
Guide to Pharmacology
217
UniProt Accession
DRD4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:5182
GenAtlas
HRH1
GeneCards
HRH1
GenBank Gene Database
Z34897
GenBank Protein Database
510296
Guide to Pharmacology
262
UniProt Accession
HRH1_HUMAN
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:281
GenAtlas
ADRA2A
GeneCards
ADRA2A
GenBank Gene Database
M23533
GenBank Protein Database
178196
Guide to Pharmacology
25
UniProt Accession
ADA2A_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:282
GenAtlas
ADRA2B
GeneCards
ADRA2B
GenBank Gene Database
M34041
GenBank Protein Database
178198
Guide to Pharmacology
26
UniProt Accession
ADA2B_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:283
GenAtlas
ADRA2C
GeneCards
ADRA2C
GenBank Gene Database
J03853
GenBank Protein Database
178194
Guide to Pharmacology
27
UniProt Accession
ADA2C_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1950
GenAtlas
CHRM1
GeneCards
CHRM1
GenBank Gene Database
X52068
GenBank Protein Database
34451
Guide to Pharmacology
13
UniProt Accession
ACM1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1951
GenAtlas
CHRM2
GeneCards
CHRM2
GenBank Gene Database
M16404
GenBank Protein Database
177990
Guide to Pharmacology
14
UniProt Accession
ACM2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1952
GenAtlas
CHRM3
GeneCards
CHRM3
GenBank Gene Database
X15266
GenBank Protein Database
32324
Guide to Pharmacology
15
UniProt Accession
ACM3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1953
GenAtlas
CHRM4
GeneCards
CHRM4
GenBank Gene Database
M16405
GenBank Protein Database
61970253
Guide to Pharmacology
16
UniProt Accession
ACM4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1954
GenAtlas
CHRM5
GeneCards
CHRM5
GenBank Gene Database
M80333
GenBank Protein Database
177988
Guide to Pharmacology
17
UniProt Accession
ACM5_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2621
GeneCards
CYP2C19
GenBank Gene Database
M61854
GenBank Protein Database
181344
Guide to Pharmacology
1328
UniProt Accession
CP2CJ_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:2625
GenAtlas
CYP2D6
GeneCards
CYP2D6
GenBank Gene Database
M20403
GenBank Protein Database
181350
Guide to Pharmacology
1329
UniProt Accession
CP2D6_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:2637
GenAtlas
CYP3A4
GeneCards
CYP3A4
GenBank Gene Database
M18907
Guide to Pharmacology
1337
UniProt Accession
CP3A4_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: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
All patents expired, 3 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: