In the past, drugs were frequently administered orally, as liquids or in powder forms. To
avoid problems incurred through the utilization of the oral route of drug administration, new
dosage forms containing the drug (s) were introduced. As time progressed, there was a
need for delivery systems that could maintain a steady release of drug to the specific site of
action. Therefore, drug delivery systems were developed to optimize the therapeutic
properties of drug products and render them more safe, effective, and reliable. Implantable …