Are there any foods that contain niacin? Is there any other substance that can cause a skin reaction similar to niacin? My husband takes advicor for cholesterol and that contains niacin. When he takes it during the day he gets very red, shaky, hot, disoriented. Because of this he takes it late at night and then has no problems with it. Today, he didn't take any medication at all but had the reaction out of nowhere. He had just eaten a dinner that consisted of roasted chicken, ham that was cooked with cloves & pineapple and spinach. This never happened before so we are concerned that he could possibly be allergic to something he has never been allergic to before. Since the reaction was IDENTICAL to the reaction he gets when he takes the advacor I am wondering if anything he ate could possibly contain niacin. Any information would be appreciated. He took 2 benadryl and it took about 30 minutes for the reaction to start receding and about an hour before he started feeling better. Thank you, Linda