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