In the present study, the safety and efficacy of the tiotropium bromide was studied for its bronchodilatory predominant action as an anticholinergic and long acting antimuscarinic agent in mild intermittent and mild persistent asthma patients. For efficacy of any drug, the mechanism of action, route of administration, frequency of administration, onset of action, duration of action, symptomatic improvement and side effect profile are all equally important to differentiate that drug from various bronchodilator medications in all the aspects tiotropium bromide fulfils all these qualities.
In this study mild intermittent and mild persistent bronchial asthma cases, tiotropium bromide treatment produced significantly greater improvement in lung function compared to the other bronchodilators or control drug. Patient’s compliance was good. Tiotropium bromide is effective for severe asthma with non eosinophilic phenotype.8
As shown in Table 1 mean wheeze score in Test group (Tiotropium) was reduced from 1.32 (100%) at baseline to 0.46 (27%) at 12 week while in Control group (Salbutamol) the improvement was from 0.56 (100%) at baseline to 0.36 (52%) at 12 week, suggesting marked improvement in Test group compared to Control group.