Abstract: A method for delivering polymerized therapeutic agents and their compositions are disclosed. The various polymers take advantage of the functional domains found in a variety of therapeutic agents. The polymerized therapeutic agent compositions are prepared by covalently linking the agent to a biocompatible backbone either directly or through backbone conjugates/monomers. The polymerized therapeutic agent compositions of the invention have highly desirable properties, which make them particularly well suited for use in biological and biomedical applications.