Is there a difference in effectiveness between Montelukast and Tiotropium for my child's asthma?
When your child's asthma is not fully controlled with an inhaled corticosteroid (ICS) alone, doctors often add another medication. Two common options are montelukast (a pill taken once daily) and tiotropium (an inhaled medication). A recent study directly compared these two add-on treatments in children aged 6 to 14 years with partly controlled or uncontrolled asthma. The study found that both medications led to similar improvements in asthma control, lung function, and quality of life, with no clear winner.
What the research says
A 2026 randomized trial directly compared montelukast and tiotropium as add-on drugs to inhaled corticosteroids in 152 children with partly controlled or uncontrolled asthma 411. At 3 months, 64.4% of children in the montelukast group achieved good asthma control (ACT/c-ACT score >19) compared to 50% in the tiotropium group. However, this difference was not statistically significant, meaning it could have occurred by chance 411. The study also found no significant differences between the two groups in lung function, quality of life, asthma flare-ups, need for rescue medication, or steroid use at 3 or 6 months 411. An earlier study in adults with mild to moderate persistent asthma found that adding montelukast or tiotropium to budesonide improved lung function, but the improvement was modest and similar between the two 9. Overall, the evidence suggests that both montelukast and tiotropium are reasonable add-on options, and the choice may depend on other factors like your child's preference for a pill versus an inhaler, side effects, or cost.
What to ask your doctor
- Given my child's age and asthma severity, would you recommend montelukast or tiotropium as an add-on treatment?
- What are the possible side effects of montelukast (e.g., behavior changes) and tiotropium (e.g., dry mouth) in children?
- How long should we try one medication before deciding if it's working?
- Are there any specific reasons (like other allergies or conditions) that make one option better for my child?
- Can we switch from one to the other if the first choice doesn't work well?
This question is drawn from common patient questions about this topic and answered using cited medical research. We do not provide individualized advice.