Provided herein is a pharmaceutical composition comprising an antagonist, an agonist, a seal coat, and a sequestering polymer, wherein the antagonist, agonist, seal coat and at least one sequestering polymer are all components of a single unit, and wherein the seal coat forms a layer physically separating...http://www.google.com.au/patents/US20080233197?utm_source=gb-gplus-sharePatent US20080233197 - Pharmaceutical compositions
