Niacin (vitamin B-3) is an essential B-complex vitamin. Flush-Free Niacin contains inositol hexanicotinate, a form of niacin that slowly breaks down in the body to provide free niacin and inositol. This gradual release of niacin prevents the characteristic niacin flush that many people find unpleasant. Now Foods' niacin capsules undergo quality and purity testing in independent laboratories. They do not contain gluten or soy and are produced without genetic engineering. It is recommended to take one (1) capsule per day. Dietary supplements do not replace a balanced and varied diet. Store out of reach of children. Do not exceed the recommended daily intake. Consult your doctor if you want to use dietary supplements and are being treated for a disease, or if you are pregnant or breastfeeding.