Niacin is a form of "B" vitamin commonly used for improving cholesterol levels. It is very effective for increasing HDLcholesterol ("good cholesterol") while lowering LDL cholesterol ("bad cholesterol") and triglycerides. Many different niacin products are currently available, including prescription medications and some over-the-counter dietary supplements. However, these products are not interchangeable; some work better than others, and some are safer. Common side effects that have been reported with this vitamin include headaches, flushing of the face and trunk, and itching.
(Click Niacin for the full-length article on niacin that covers topics such as dosing guidelines, strengths, and potential overdose symptoms. You can also click on the various links in the box to the right to access specific topics on niacin.)