The present invention is embodied by a composition capable of chaperoning a typically non-orally available therapeutic or diagnostic agent through the environment of the digestive tract such that the therapeutic or diagnostic agent is bioavailable. The composition may or may not be targeted to specific cellular receptors, such as hepatocytes. Therapeutic agents include, but are not limited to, insulin, calcitonin, serotonin, and other proteins. Targeting is accomplished with biotin or metal based targeting agents.
