NAUSICALM TABLET 50MG

Cyclizine

Source of information: Drugbank (External Link). Last updated on: 3rd July 18
*Trade Name used in the content below may not be the same as the HSA-registered product.

Active Ingredient / Synonyms

(+-)-1-Diphenylmethyl-4-methylpiperazine | (±)-1-diphenylmethyl-4-methylpiperazine | (N-Benzhydryl)(n'-methyl)diethylenediamine | 1-(Diphenylmethyl)-4-methylpiperazine | 1-Benzhydryl-4-methylpiperazin | Ciclizina | Cyclizine | Cyclizinum | N-Benzhydryl-N'-methylpiperazine | N-methyl-N'-benzhydrylpiperazine | Cyclizine |

Description

A histamine H1 antagonist given by mouth or parenterally for the control of postoperative and drug-induced vomiting and in motion sickness. (From Martindale, The Extra Pharmacopoeia, 30th ed, p935)

Indication

For prevention and treatment of nausea, vomiting, and dizziness associated with motion sickness, and vertigo (dizziness caused by other medical problems).

Mechanism of Action

Vomiting (emesis) is essentially a protective mechanism for removing irritant or otherwise harmful substances from the upper GI tract. Emesis or vomiting is controlled by the vomiting centre in the medulla region of the brain, an important part of which is the chemotrigger zone (CTZ). The vomiting centre possesses neurons which are rich in muscarinic cholinergic and histamine containing synapses. These types of neurons are especially involved in transmission from the vestibular apparatus to the vomiting centre. Motion sickness principally involves overstimulation of these pathways due to various sensory stimuli. Hence the action of cyclizine which acts to block the histamine receptors in the vomiting centre and thus reduce activity along these pathways. Furthermore since cyclizine possesses anti-cholinergic properties as well, the muscarinic receptors are similarly blocked.

Pharmacodynamics

Cyclizine is a piperazine-derivative antihistamine used as an antivertigo/antiemetic agent. Cyclizine is used in the prevention and treatment of nausea, vomiting, and dizziness associated with motion sickness. Additionally, it has been used in the management of vertigo in diseases affecting the vestibular apparatus. Although the mechanism by which cyclizine exerts its antiemetic and antivertigo effects has not been fully elucidated, its central anticholinergic properties are partially responsible. The drug depresses labyrinth excitability and vestibular stimulation, and it may affect the medullary chemoreceptor trigger zone. It also possesses anticholinergic, antihistaminic, central nervous system depressant, and local anesthetic effects.

Pharmacokinetics

Absorption:

Not Available

Distribution:

Not Available

Metabolism:

Cyclizine is metabolised to its N-demethylated derivative, norcyclizine, which has little antihistaminic (H1) activity compared to Cyclizine.

Elimination:

Not Available

Half-life

20 hours

Clearance

Not Available

Toxicity

Not Available

References

  1. Health Science Authority of Singapore - Reclassified POM
  2. Drugbank

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Approval Information

NAUSICALM TABLET 50MG was registered with Health Science Authority of Singapore by AFT PHARMACEUTICALS SINGAPORE PTE LTD. It is marketed with the registration number of SIN15193P with effective from 2017-03-20.

This product contains 50mg of Cyclizine in the form of TABLET.

The medicine was manufactured by Sigma Laboratories Ltd. in INDIA

It is a Presciption Only Medicine which can only be obtained from a doctor or a dentist, or from a pharmacist with a prescription from a Singapore-registered doctor or dentist.

Anatomical Therapeutic Chemical (ATC) Classification

ATC Code: R06AE03

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