ATROVENT N METERED DOSE INHALER 20mcg/PUFF FOR RESPIRATORY (INHALATION) USE

Product Information

Registration Status: Active

ATROVENT N METERED DOSE INHALER 20mcg/PUFF is approved to be sold in Singapore with effective from 2002-06-26. It is marketed by BOEHRINGER INGELHEIM SINGAPORE PTE LTD, with the registration number of SIN12002P.

This product contains Ipratropium 20mcg/dose in the form of AEROSOL, SPRAY. It is approved for RESPIRATORY (INHALATION) use.

This product is manufactured by BOEHRINGER INGELHEIM PHARMA GMBH & CO KG in GERMANY.

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

Description

A muscarinic antagonist structurally related to atropine but often considered safer and more effective for inhalation use. It is used for various bronchial disorders, in rhinitis, and as an antiarrhythmic.

Indication

For maintenance treatment of bronchospasm associated with chronic obstructive pulmonary disease, including chronic bronchitis and emphysema.

Mechanism of Action

Ipratropium bromide is an anticholinergic agent. It blocks muscarinic cholinergic receptors, without specificity for subtypes, resulting in a decrease in the formation of cyclic guanosine monophosphate (cGMP). Most likely due to actions of cGMP on intracellular calcium, this results in decreased contractility of smooth muscle.

Pharmacokinetics

Absorption: Inhalation (local)-minimal; Nasal-rapid and minimal
Distribution: * 4.6 L/kg
Metabolism: Partially metabolized to at least 8 metabolites formed primarily via hydrolysis and conjugation. The main metabolites are N-isopropylnortropium methobromide, which is formed by enzymatic hydrolysis of the ester; α-phenylacrylic acid-N-isopropylnortropine-ester methobromide, which is formed by enzymatic loss of a water; and phenylacetic acid-N-isopropylnortropine-ester methobromide, which is formed by enzymatic loss of a CH₃OH-group. These metabolites appear to be inactive.
Elimination

Clearance

* 2.3 L/min (total clearance of active ingredient)

Toxicity

LD₅₀=1001mg/kg (orally in mice)

Active Ingredient/Synonyms

Ipratropium cation | Ipratropium ion | Ipratropium |

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