A nutritional supplement includes a first formulation including minerals: chromium polynicotinate, magnesium glycinate, manganese sulfate, selenium, vanadyl sulfate, zinc gluconate, copper gluconate, iodine, and boron; and vitamins: vitamins C, B1, B2, B3, B6, and B12, biotin, alpha-lipoic acid, and folic acid. The second formulation, packaged separately from the first, includes essential fatty acids: walnut oil, flax seed oil, safflower oil, sesame seed oil, and pumpkin seed oil; and vitamins: vitamin E and vitamin Q-10. A method for improving metabolic function includes consuming the first and second formulation. A method of formulating a composition for improving metabolic function includes packaging together the first formulation and packaging together and separately from the first formulation the second formulation. A method for assisting a patient to improve metabolic function includes prescribing the first formulation and the second formulation to be taken separately from the first formulation.