Featured: niacin, Niacor, Niaspan, Slo-Niacin, Nicolar (discontinued) Main Article

Niacin, nicotinic acid, vitamin B3 Niacor, Niaspan, Slo-Niacin, Nicolar (discontinued) is used medically to treat people with niacin deficiency. Advanced deficiency of niacin can lead to pellagra. Niacin is also prescribed for the treatment of high cholesterol and triglyceride levels in the blood. Side effects, drug interactions, warnings and precautions, and patient safety information should be reviewed prior to taking any medication.