Thank you.

I see. Well, perhaps others can speak to what you're experiencing. For what it's worth, even with the same vitamin D supplementation, I do feel more fatigued, and now that you mention it the last few days were bad actually and I experienced some of the older fatigue before D supplementation. The two things that were different were that I started taking R-Lipoic Acid and it was intensely cold for the first time this winter, about -20 to -30. I thought it was the former, but perhaps it was the latter? Yesterday it was much warmer and I didn't experience the fatigue. I thought it was because I had upped my vitamin D yesterday in response to the fatigue of the last few days, but perhaps it was because the cold left us.

Hmm...