Hello, I was diagnosed many years ago maybe about 20 yrs ago. Never quit smoking, in 2019 I ended up in the hospital 3 times 4-5 day stay each time. I do have end stage C.O.P.D and my blood oygen level normal is 90-93. And I liked pediizone, but they would only give it to me while I was in the hospital and may prescribe 5-10 pills afterwards as they told me it's not good to be on pedizone for a period of time. But it did help me breathe. I have home oxygen at level 3 and suppose to wear it at nights. I have nebulizer, and 4 inhalers. My thing lately is my B.O.L.'s are not staying up while wearing my oxygen while sleeping. So my doctor up the level. So I am thinking my end is near. I don't think dizziness or light headed has anything to do with your C.O.P.D. Talk to your doctor, did you eat?