I don’t have asthma . I am a stage 4 (they say) Emphysema patient . I have used the inhaler Trelegy for two years . I didn’t have any symptoms besides low air. So they put me on Trelegy. They asked me shortly after if it helps . I could not say . I felt no difference . I am on 24/7 4 ltr oxygen . I have been taking Guaifenesin and a prescription for acid reflux . I have good days more than bad . I have occasional chest/lung pain. I am not able to walk long distances or exercise. My oxygen gets down to 85 when I dress myself . Even with my air on . I still say that I do not know what Trelegy does for me . I have never been an advocate of medicines . Looking back I don’t think I should have started it . I sure would not start it again . I don’t think anyone should start an inhaler or drug if they are not sure they need it . That is my “4 Ltrs” on the subject. 🧐Blessed Be, Crystalena