Pure Encapsulations Niacitol-500 offers support for the blood. Healthy metabolic function is essential to the proper digestion and utilization of the nutrients that you consume. By providing metabolic support, niacin may help with energy levels. Niacin also helps to produce sex hormones, as well as healthy skin, hair, and nails. Niacin may also help to promote cardiovascular health, and it works to support healthy cholesterol levels. Niacitol is a great niacin supplement, because it wont cause flush, unlike other niacin supplements. Recommended use: 1 capsule, 1-4 times daily with meals, or as directed by a healthcare professional.