We've been posting to each other on your other thread. So I won't duplicate that here.

But I believe the impaired glucose control alone is enough to create crushing fatigue. So is the Lymphoma.

My blood sugar has been borderline for many years, and the progression of fatigue issues has paralleled it. Since being metformin (Glumetza) I've been much better, and my legs stronger and sleeping much less. If your blood glucose cannot get into the cells, they will be weak.

I also take the acetyl carnitine (a low dose of 250mg a day) and 100mg of r-lipoic acid. 500mg Ester C with bioflavinoids, Krill oil, 5mg methyl B12, 10,000 IU of Vit D3. I used to take much more, but found these I use today the most useful.