Compositions, systems and methods that allow for the detection of the actual physical delivery of a pharmaceutical agent to a body are provided. Embodiments of the compositions include an identifier and an active agent. The invention finds use in a variety of different applications, including but not...http://www.google.es/patents/US20080284599?utm_source=gb-gplus-sharePatente US20080284599 - Pharma-Informatics System
