Compositions useful in the delivery of active agents are provided. These delivery compositions include (a) an active agent; and (b) a carrier of at least one mono-C-substituted or di-C-substituted diketopiperazine. Methods for preparing these compositions and administering these compositions are also...http://www.google.fr/patents/US8133514?utm_source=gb-gplus-shareBrevet US8133514 - Carbon-substituted diketopiperazine delivery systems
Carbon-substituted diketopiperazine delivery systems
