Excellent clarification.
What I took a year ago or so, was Niacinamide that is the same as Nicotinamide. I didn't cause flushing if I remember well. I still have it. Now, I took Niacin 1000 mg and caused flushing but it looks like Niacin isn't the antifungal but Niacinamide. http://www.vitaminshoppe.com/store/en/browse/sku_detail.jsp?id=VS-1533