Umeclidinium bromide
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Umeclidinium is a long-acting muscarinic antagonist used as a long-term maintenance treatment of airflow obstruction in patients with chronic obstructive pulmonary disease (COPD).
Umeclidinium is a long-acting muscarinic antagonist used as a long-term maintenance treatment of airflow obstruction in patients with chronic obstructive pulmonary disease (COPD).
Umeclidinium is a long-acting muscarinic antagonist, which is often referred to as an anticholinergic. It has similar affinity to the subtypes of muscarinic receptors M1 to M5. In the airways, it exhibits pharmacological effects through inhibition of M3 receptors at the smooth muscle leading to bronchodilation. The competitive and reversible nature of antagonism was shown with human and animal origin receptors and isolated organ preparations. In preclinical in vitro as well as in vivo studies, prevention of methacholine- and acetylcholine-induced bronchoconstrictive effects was dose-dependent and lasted longer than 24 hours. The clinical relevance of these findings is unknown. The bronchodilation following inhalation of umeclidinium is predominantly a site-specific effect.
Umeclidinium is approved by the FDA and Health Canada for the maintenance treatment of patients with chronic obstructive pulmonary disease (COPD). Additionally, umeclidinium also exists as combination products with vilanterol or vilanterol and fluticasone furoate. Both products were indicated for the maintenance treatment of COPD, but only the umeclidinium/vilanterol/fluticasone furoate product was approved for the maintenance treatment of asthma in patients aged 18 years and older.
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