a method for making an implantable bioerodible material for the sustained release of a medicament and the material made from the method . the method comprises the formulation of a biomaterial polymeric carrier into particles of predetermined density and size . the particles are then are mixed with the desired medicament and extruded into the desired shape for implantation or reground to a predetermined size distribution for injection as a suspension . in an alternative embodiment , the particles of polymeric carrier are immersed in a solvent containing a medicament , and the pores of the particles are filled with medicament through alternate application and release of vacuum .