I'm sorry to hear. DH has chronic fatigue. According to the book, if niacin works, then stops, it is a sign to increase the dose. (But of course, I am not a doctor, and don't know you. I urge you, if interested, to read the book.)

I'm taking 3g a day, in three increments, each time with a B complex and as much C as I can handle, currently 6k a day.

I don't flush any more. Even at the dose I'm taking now. Which is what is supposed to happen. I don't mind the flush, but it's nice to know I won't be randomly turning pink in public.

The flush is a temporary thing. As we ramp up, it dwindles and goes away.