Targeted Drug Delivery Systems

As noted in section "Biological Process and Events Involved in Drug Targeting," three strategies have been used to achieve drug targeting. These include use of site-specific, pharmacologically active molecules (magic bullet approach); preparation of pharmacologically inert agents that are activated only at the active site (prodrugs); and use of biologically inert carrier systems that selectively direct drugs to a specific site in the body (magic gun/missile or drug carrier approach). In this section, prodrugs and drug carrier delivery systems are discussed in detail.

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