I have about 1/3 lung capacity, am chronically short of breath and have also been chronically lightheaded which no Dr can figure out. I can barely walk 15 feet to the bathroom. I’m pretty much homebound except to get myself to a Dr appt. Been on the same inhaler which gives me lots of side effects and no noticeable relief. I was told they’re pretty much all the same. I was evaluated for surgery but I’m not a good candidate. Did pulmonary and vestibular rehab and no improvement. Is there anything else out there that anyone can recommend I take, do or try? Lots of other health issues and symptoms as well. Not getting any answers from tests I’ve had done and I’m very scared of the really poor quality of my life now which will just get worse . Any help or advice is greatly appreciated. Thank you!