I'm not positive BUT I just started a supplement with Niacin in it - the active form. Not sure the mg dose ( it was 600% DV) I'm going to check when I get home but I had a horrible weekend. In the shower b/c I wasn't sure what was going to come out where. I'm still not sure if it was the niacin but I didn't take any today and I feel a bit better.
Whoops didn't realize how long this thread is so I'm going to lock it and start a new one!