For almost four decades, both natural and synthetic polymers have been investigated for use as carriers for controlling drug dosage. This coalition of polymeric materials with the pharmaceutical science led to the innovation in the design and the development of novel drug delivering systems. The purpose of the polymers in such system is to deliver drugs to target pathological cells in order to increase the effectiveness of drugs thus reducing their undesirable side effects. Besides, the polymer core also protects the drugs from the physiological environment in vivo and thus increases the...