<prompt> Vitamin used in the treatment of hyperlipoproteinemia: September 2012Vitamin B1Vitamin B6Niacin Nicotinic acidVitamin B12  <response>: Ans: C i.e. Niacin Nicotinic acid Immediate release niacin is effective at lowering cholesterol levels, and has minimal hepatotoxic side effects due to its rapid elimination from the body. 