Niacin, also called nicotinic acid, is a B vitamin (vitamin B3). It occurs naturally in plants and animals, and is also added to many foods as a vitamin supplement. Niacin is also present in many multivitamins and nutritional supplements. Lovastatin is in a group of drugs called HMG CoA reductase inhibitors, or "statins." Lovastatin reduces levels of "bad" cholesterol (low-density lipoprotein, or LDL) and triglycerides in the blood, while increasing levels of "good" cholesterol (high-density lipoprotein, or HDL). The combination of lovastatin and niacin is used to lower cholesterol and triglycerides (types of fat) in the blood. Lovastatin and niacin may also be used for other purposes not listed in this medication guide.
Advicor is a combination of both Vitamin B3 and a particular HMG-CoA inhibitor. It lowers the levels of triglyceride and cholesterol in the blood. It also assists in preventing strokes and heart attack. The medication keeps atherosclerosis from worsening.