**6. Conclusions**

CD-NSs are demonstrated to be safe, cheap, and biocompatible polymers. Consequently, several authors are focused on this field recently achieving novel applications. This chapter summarized the general information that will guide the advanced research to investigate the CD-NSs. Information about the routes of administration, synthesis protocols, recommendations, classifications, and applications of the novel synthesized materials, with special attention to targeted drug delivery, are mostly collected. It is shown the ability of CD-NSs to entrap drugs and to control their release from the matrix which can be modulated by different physicochemical agents.

As a remark, CD-NS is a good promise to improve the current problems in drug formulations and open novel strategies for drug delivery that identify the light in the future.
