Provided herein are nutritional compositions, regimens and methods for the prevention, mitigation, and treatment of a cholesterol abnormality. In some embodiments, the invention comprises combinations of niacin (precursor), and at least one ingredient selected from the group consisting of: an Omega-3 fatty acid, Omega-3 fatty acid precursor, or Omega-3 fatty acid derivative, and: a plant sterol, a plant sterol precursor, or a plant sterol derivative. In other embodiments, the combination includes all three of those ingredients.