Jamieson Niacin (Vitamin B3) is needed for proper circulation and healthy skin. It aids in the functioning of the nervous system; in the metabolism of carbohydrates, fats, and proteins; and in the production of hydrochloric acid for the digestive system. It's involved in the normal secretion of bile and stomach fluids, and in the synthesis of sex hormones. It also lowers cholesterol and improves circulation. It's helpful for schizophrenia and other mental illnesses, and is also a memory-enhancer. Each Jamieson Niacin capsule contains 500mg niacin.