I thought I'd share this. I stopped Spiriva, and Symbicort a few months ago. I'd needed to take prednisone at least monthly because I'd get so short of breath. The doctor started me on Trelegy, and his staff helped me get Medicare to cover it. It's not covered normally.
I use my oximeters when I panic, and am feeling short of breath. I can drop to 88% per my doctor, during exercise, but then I need to stop walking and make sure it comes back up within 10 minutes. It usually takes about 30 seconds to come back.
On the Trelegy I noticed my saturation levels are quite a bit higher on a regular basis. Normally they'd run at about 94, but they go up to 97 now. They still drop, but the saturation is higher. My doctor said it's the medication. I can't figure out why the medicine made that difference. Just wanted to share this, and not needing the prednisone has helped.