Not necessarily - I have been prescribed a generic version of Symbicort, which contains 2 ingredients and not only helps my Bronchiectasis, but keeps my asthma well-controlled.

I think it depends on the sum of your symptoms and what your doc feels would be most useful.
Are you feeling well using Trelegy, or do you think you need something else?

I’m not on Trelogy. I’ve been on Advair (for mild asthma) and have an albuterol if I need it. Doc plans to change it next visit. We had an insurance glitch when he ordered change in fall and I told him I’ll figure out options.