Abstract
The ideal drug delivery system (DDS) delivers an adequate amount of therapeutic agent to definite sites for action in a safe and efficient manner, with improved dosage, required time, and drug release profile, to attain the desired therapeutic effects without causing harm to surrounding cells and tissues in the human body. Controlled drug delivery systems aid in the transfer of a uniform concentration of drug to the adsorption site and allow for the maintenance of therapeutic plasma drug concentrations. Targeted drug delivery systems only deliver therapeutic agents to the exact places or locations where they are needed, but also help improve the therapeutic efficiency of medications by lowering the toxicity associated with them, allowing for lower drug doses to be utilized for therapy. The phrase “targeted drug delivery” refers to a smart DDS that enables the therapeutic agent to be carried and delivered to a specific place or site within the body for an extended period.
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