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Cyclizine

From Wikipedia, the free encyclopedia
Medication for motion sickness or vertigo

Pharmaceutical compound
Cyclizine
Clinical data
Trade namesMarezine, Valoid, Nausicalm, others
AHFS/Drugs.comConsumer Drug Information
Pregnancy
category
Routes of
administration
By mouth,IM,IV
ATC code
Legal status
Legal status
Pharmacokinetic data
MetabolismN-demethylated to inactive norcyclizine[1]
Eliminationhalf-life20 hours
Identifiers
  • 1-benzhydryl-4-methyl-piperazine
CAS Number
PubChemCID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard(EPA)
ECHA InfoCard100.001.314Edit this at Wikidata
Chemical and physical data
FormulaC18H22N2
Molar mass266.388 g·mol−1
3D model (JSmol)
  • CN(CC1)CCN1C(C2=CC=CC=C2)C3=CC=CC=C3
  • InChI=1S/C18H22N2/c1-19-12-14-20(15-13-19)18(16-8-4-2-5-9-16)17-10-6-3-7-11-17/h2-11,18H,12-15H2,1H3 checkY
  • Key:UVKZSORBKUEBAZ-UHFFFAOYSA-N checkY
  (verify)

Cyclizine, sold under a number of brand names, is a medication used to treat and preventnausea,vomiting anddizziness due tomotion sickness orvertigo.[2] It may also be used for nausea aftergeneral anaesthesia or that which developed fromopioid use.[2][3] It is takenby mouth, in therectum, orinjected into a vein.[3][4]

Common side effects include sleepiness, dry mouth,constipation, and trouble with vision.[5] More serious side effects includelow blood pressure andurinary retention.[5] It is not generally recommended in young children or those withglaucoma.[2][6] Cyclizine appears to be safe duringpregnancy but has not been well studied.[7] It is in theanticholinergic andantihistamine family of medications.[3][6]

Cyclizine was discovered in 1947.[8] It is on theWorld Health Organization's List of Essential Medicines.[9] In the United States it is availableover the counter.[6]

Medical uses

[edit]

Primary uses includenausea,vomiting anddizziness associated withmotion sickness,vertigo and post-operatively following administration ofgeneral anesthesia andopioids. It is sometimes given inhyperemesis gravidarum, although the manufacturer advises that it be avoided in pregnancy. Off-license use often occurs with specialists in hospitals to treat inpatients who have become severely dehydrated in pregnancy. An off-label use is as an opioid/opiate potentiator.[10]

The drug Diconal is a combination of cyclizine and the opioiddipipanone.[11] Dipipanone is aschedule I controlled substance in the US.[12]

Contraindications

[edit]

Its antimuscarinic action warrants caution in patients withprostatic hypertrophy, urinary retention, or angle-closureglaucoma. Liver disease exacerbates itssedative effects.[10]

Adverse effects

[edit]

Common (over 10%) —Drowsiness,dry mouth.

Uncommon (1% to 10%) — Headache, psychomotor impairment, dermatitis, andantimuscarinic effects such as diplopia (double vision),tachycardia,constipation,urinary retention and gastro-intestinal disturbances.

Rare (less than 1%) — Hypersensitivity reactions (bronchospasm,angioedema,anaphylaxis, rashes andphotosensitivity reactions),extrapyramidal effects, dizziness, confusion, depression, sleep disturbances,tremor, liver dysfunction, andhallucinations.

Pharmacology

[edit]

Cyclizine is apiperazine derivative with histamine H1-receptor antagonist (antihistamine) activity. The precise mechanism of action in inhibiting the symptoms of motion sickness is not well understood. It may have effects directly on thevestibular system and on thechemoreceptor trigger zone. Cyclizine exerts a centralanticholinergic (antimuscarinic) action.[10]

Synthesis

[edit]

Cyclizine may be prepared by theEschweiler–Clarke methylation ofdiphenylmethylpiperazine or by reaction of benzhydryl bromide with1-methylpiperazine in acetonitrile to form the hydrobromide salt of the drug.

History

[edit]

Cyclizine was developed in the American division of pharmacy companyBurroughs Wellcome (todayGlaxoSmithKline) during a research study involving many drugs of the antihistamine group. Cyclizine was quickly clinically found as a potent and long-acting antiemetic. The company named the substance – or more precisely cyclizine'shydrochloride form which it usually appears in – "marezine hydrochloride" and started to sell it in the United States under trade nameMarezine. Selling was begun inFrance under trade nameMarzine in 1965.[13][14]

The substance received more credit whenNASA chose it as a space antiemetic for thefirst crewed Moon flight. Cyclizine was introduced to many countries as a common antiemetic. It is an over-the-counter drug in many countries because it has been well tolerated, although it has not been studied much.[13][15]

Society and culture

[edit]

Some people using methadone recreationally combine cyclizine with theirmethadone dose, a combination that is known to produce strongpsychoactive effects.[16]It has also been used recreationally for itsanticholinergic effects to induce hallucinations.[17]

It has been used illegally ingreyhound racing to sabotage a dog's performance.[18]

Names

[edit]

As cyclizine hydrochloride tablets and cyclizine lactate solution for intramuscular or intravenous injection (brand names: Valoid[10] in UK and South Africa and Marezine, Marzine and Emoquil in US). Cyclizine was marketed as Bonine for Kids in the US, but was discontinued in 2012, and replaced with meclizine.[19]

Cyclizine derivatives

[edit]
Structural comparison of cyclizine
and relatedH1 antagonists[20]
CompoundR1R2
CyclizineHCH3
ChlorcyclizineClCH3
MeclizineCl
BuclizineCl
OxatomideH
HydroxyzineCl
CetirizineCl

See also

[edit]

References

[edit]
  1. ^"DrugBank: Cyclizine. Pharmacology: metabolism".DrugBank Database.Archived from the original on 30 January 2016. Retrieved5 January 2016.
  2. ^abc"Cyclizine 50mg Tablets - Summary of Product Characteristics (SPC) - (eMC)".www.medicines.org.uk. 27 March 2015.Archived from the original on 20 December 2016. Retrieved13 December 2016.
  3. ^abcFeldman M, Friedman LS, Brandt LJ (2015).Sleisenger and Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. Elsevier Health Sciences. p. 218.ISBN 9781455749898.Archived from the original on 20 December 2016.
  4. ^World Health Organization (2019).World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization.hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
  5. ^ab"Cyclizine Side Effects in Detail - Drugs.com".www.drugs.com.Archived from the original on 21 December 2016. Retrieved13 December 2016.
  6. ^abc"Cyclizine: Indications, Side Effects, Warnings - Drugs.com".www.drugs.com.Archived from the original on 21 December 2016. Retrieved13 December 2016.
  7. ^"Cyclizine Use During Pregnancy | Drugs.com".www.drugs.com.Archived from the original on 21 December 2016. Retrieved13 December 2016.
  8. ^Williams P (2010).The story of the Wellcome Trust : unlocking Sir Henry's legacy to medical research. Hindringham: JJG. p. 14.ISBN 9781899163922.Archived from the original on 20 December 2016.
  9. ^World Health Organization (2021).World Health Organization model list of essential medicines: 22nd list (2021). Geneva: World Health Organization.hdl:10665/345533. WHO/MHP/HPS/EML/2021.02.
  10. ^abcd"Valoid Tablets by Amdipharm".Electronic Medicines Compendium. Datapharm. Archived fromthe original on 4 March 2016. Retrieved1 October 2011.
  11. ^"Diconal Tablets by Amdipharm".Electronic Medicines Compendium. Datapharm. Archived fromthe original on 1 April 2008. Retrieved5 August 2008.
  12. ^"Conversion Factors for Controlled Substances".DEA Diversion Control Division. Retrieved26 March 2020.
  13. ^abSneader W (2005).Drug discovery: a history. John Wiley & Sons. p. 404.ISBN 0-471-89979-8.Archived from the original on 10 September 2017.
  14. ^Sittig M (1988).Pharmaceutical manufacturing encyclopedia. William Andrew. p. 406.ISBN 0-8155-1144-2.Archived from the original on 10 September 2017.
  15. ^Rajoo SG."Introduction". In Lobo M (ed.).Anti-emetics - Metoclopramide, Domperidone, Ondansetron, Cyclizine.Archived from the original on 2 April 2015. Retrieved9 March 2015.{{cite book}}:|work= ignored (help)
  16. ^Ruben SM, McLean PC, Melville J (August 1989). "Cyclizine abuse among a group of opiate dependents receiving methadone".British Journal of Addiction.84 (8):929–34.doi:10.1111/j.1360-0443.1989.tb00766.x.PMID 2775912.
  17. ^Bassett KE, Schunk JE, Crouch BI (September 1996). "Cyclizine abuse by teenagers in Utah".The American Journal of Emergency Medicine.14 (5):472–4.doi:10.1016/S0735-6757(96)90156-4.PMID 8765114.
  18. ^Conor Ryan for The Independent. June 20, 2013IGB left with €250k bill after dog doping caseArchived 2016-03-04 at theWayback Machine
  19. ^"Bonine for Kids". Insight Pharmaceuticals. Archived fromthe original on 17 September 2010.
  20. ^Lemke TL, Williams DA, Roche VF, Zito SW (2013).Foye's Principles of Medicinal Chemistry (7th ed.). Philadelphia: Wolters Kluwer Health / Lippincott Williams & Wilkins. p. 1056.ISBN 978-1-60913-345-0.

External links

[edit]
  • "Cyclizine".Drug Information Portal. U.S. National Library of Medicine. Archived fromthe original on 4 January 2020.
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