Butropium Bromide Products | Cleanchem - Butropium Bromide is an anticholinergic agent used as a bronchodilator in the treatment of respiratory conditions. It acts by blocking muscarinic receptors in the airways, leading to relaxation of bronchial smooth muscle. It helps alleviate symptoms of bronchospasm and chronic obstructive pulmonary disease (COPD). Its action is similar to other inhaled antimuscarinic drugs.