Life Extension No Flush Niacin (Inositol Hexanicotinate), 800 mg 100 capsules Niacin is a B vitamin that has been widely recognized by the medical community for its ability to fight cholesterol and therefore is a "weapon " for the prevention of cardiovascular events . Studies have shown that niacin lowers LDL-X ( bad cholesterol) by 10-20 % , triglycerides by 20-40 % , and significantly increase the levels of HDL-X ( good cholesterol) by 15-35 %. Niacin is the most effective means for increasing HDL-X, and is the only substance that can significantly reduce the levels of lipoprotein . Taking niacin usually causes redness of the face and body . Niacin «No Flush» Meeting contains a special form of niacin , inositol. It is an ester derivative . This derivative allows niacin to act without causing the unpleasant side effect of flushing .