A drug deactivation system according to some embodiments includes at least one degradable capsule exposed to at least one drug-retaining region of a drug delivery device and an agent. The agent is configured to render a drug ineffective upon degradation of the at least one capsule. The at least one drug-retaining...http://www.google.com/patents/US7838715?utm_source=gb-gplus-sharePatent US7838715 - Drug deactivation system and method of deactivating a drug using the same
