FLUSH FREE NIACIN is a vitamin from the B group – specifically vitamin B8. One of the flush free niacin benefits is that it does not have the flush effect of vitamin B3. It can permeate the body’s blood-brain barrier. It is used to help maintain healthy blood fat and cholesterol levels. Flush free niacin is also used to improve blood circulation. It converts to NAD and plays a central role in controlling the aging process and gene expression.