Has anybody ever had a niacin flush? I took a B-complex vitamin with 25 mg of B3 (niacin) and had my face turn as red as a coke can. It happened in a meeting I was leading, no less. My face is still red while I'm hiding in my office, but its not nearly what it was. I'm trying to figure out if this is normal. This is a new vitamin the doctor put me on about a week ago. Dr. Google isn't being terribly helpful, either!