Tiotropium

Summary: Groups 1, 3, 4, 5 and 6 of this research team adopted a single-center, open-label design. Group 2 used a three-sequence, three-period crossover design, where participants in this dose group were randomly assigned to the three sequences in a 1:1:1 ratio to undergo three-period crossover administration. Healthy adult subjects were selected to use TQC3302 inhalation spray to evaluate the safety, tole...

Summary: Bronchial asthma is a widespread chronic condition charactrized by inflammation and narrowing of airways, leading to repeateted episodes of breathlessness, wheezing and labored breathing.Breathing exercises help to manage hyperventilation often seen in asthmatic patients. To handle respiratory complications asthmatics are advised to practise nasal breathing techniques in conjunction with their pre...

Summary: The purpose of this study is to evaluate the site and mechanisms responsible for expiratory airflow limitation in chronic, treated, non-smoking, stable asthmatics with moderate to severe persistent expiratory airflow obstruction. Treatment will include inhaled corticosteroids and long acting beta2agonists and long acting muscarinic antagonists. We are interested in determining whether the large an...