Inositol nicotinate, also known as Inositol hexaniacinate/hexanicotinate or "no-flush niacin", is a niacin ester and vasodilator. It is used in food supplements as a source of niacin (vitamin B3), where hydrolysis of 1 g (1.23 mmol) inositol hexanicotinate yields 0.91 g nicotinic acid and 0.22 g inositol.