What is the “niacin flush” associated with AIO?

While consuming AIO with AC-11 it is possible to experience a temporary “niacin flush.” A niacin flush is a common response to taking niacin caused by a dilation of blood vessels near the surface of the skin and usually dissipates within a short time. Niacin is included in AIO for its known cardiovascular benefits. To minimize the niacin flush, we recommend that your daily consumption of AIO be divided into two equal doses taken at separate mealtimes.