Flush-free niacin inositol hexanicotinate is a form of niacin that does not cause flushing, which is a common side effect of regular niacin. It is often used to support cardiovascular health ...

Though niacin has considerable health benefits, taking high amounts can cause side effects, including niacin flush. Niacin flush ... neutralizing free radicals and reactive oxygen species (ROS ...

Take it with aspirin: Taking a regular aspirin about 30 minutes before taking a niacin supplement may help decrease flushing.

The niacin skin flush response (NSFR) is a physiological reaction that occurs when niacin (vitamin B3) is administered, leading to increased blood flow and a flushing sensation in the skin.