A bad or normal side effect?
niacin A hot flash may occur after taking large additional doses of niacin (vitamin B3). This vitamin is often used to treat high cholesterol. The warm, itchy and red skin is unpleasant but not dangerous. This article describes the symptoms of niacin flushing, the duration of symptoms, and tips for minimizing skin flushing. Alexandr Kolesnikov/Getty… Read More »