Vitamin B-12 injections are used to keep energy high during the restrictive caloric phases of dieting. Lipotropics, which are compounds consisting of amino acids, are used to break down fats and enhance fat metabolism. When vitamin B-12 is combined with lipotropic agents (such as the 3 lipotropic amino acids found in our lipotropic injections: methionine, inositol, and choline), fat metabolism is enhanced, and energy is increased. Dr. Summers recommends taking Vitamin B-12 and Lipotropic injections as part of your weight loss and maintenance programs