FLUMAZENIL KABI SOLUTION FOR INJECTION OR INFUSION 0.1MG/ML

Flumazenil

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

Flumazenilo | Flumazenilum | Flumazepil | Flumazenil |

Description

Fumazenil is an imidazobenzodiazepine derivative and a potent benzodiazepine receptor antagonist that competitively inhibits the activity at the benzodiazepine recognition site on the GABA/benzodiazepine receptor complex, thereby reversing the effects of benzodiazepine on the central nervous system.

Indication

For the complete or partial reversal of the sedative effects of benzodiazepines in cases where general anesthesia has been induced and/or maintained with benzodiazepines, and where sedation has been produced with benzodiazepines for diagnostic and therapeutic procedures. Also for the management of benzodiazepine overdose as an adjunct for appropriate supportive and symptomatic measures.

Mechanism of Action

Flumazenil, an imidazobenzodiazepine derivative, antagonizes the actions of benzodiazepines on the central nervous system. Flumazenil competitively inhibits the activity at the benzodiazepine recognition site on the GABA/benzodiazepine receptor complex. Flumazenil is a weak partial agonist in some animal models of activity, but has little or no agonist activity in man.

Pharmacodynamics

Flumazenil antagonizes the CNS effects produced by benzodiazepines, but does not antagonize the central nervous system effects of drugs affecting GABA-ergic neurons by means other than the benzodiazepine receptor (including ethanol, barbiturates, or general anesthetics) and does not reverse the effects of opioids.

Pharmacokinetics

Absorption:

Not Available

Distribution:

* 0.9 to 1.1 L/kg

Metabolism:

Hepatic. Flumazenil is completely (99%) metabolized. The major metabolites of flumazenil identified in urine are the de-ethylated free acid and its glucuronide conjugate.

Elimination:

Flumazenil is completely (99%) metabolized. Elimination of radiolabeled drug is essentially complete within 72 hours, with 90% to 95% of the radioactivity appearing in urine and 5% to 10% in the feces.

Half-life

Initial distribution half-life is 4 to 11 minutes and the terminal half-life is 40 to 80 minutes. Prolongation of the half-life to 1.3 hours in patients with moderate hepatic impairment and 2.4 hours in severely impaired patients. Compared to adults, the

Clearance

* 1 L/hr/kg [healthy volunteers receiving a 5-minute infusion of a total of 1 mg]

Toxicity

In clinical studies, most adverse reactions to flumazenil were an extension of the pharmacologic effects of the drug in reversing benzodiazepine effects.

References

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

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Approval Information

FLUMAZENIL KABI SOLUTION FOR INJECTION OR INFUSION 0.1MG/ML was registered with Health Science Authority of Singapore by FRESENIUS KABI (SINGAPORE) PTE LTD. It is marketed with the registration number of SIN15610P with effective from 2019-01-09.

This product contains 0.1mg/ml of Flumazenil in the form of INJECTION, SOLUTION.

The medicine was manufactured by Fresenius Kabi Austria GmbH in AUSTRIA

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: V03AB25

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