INTRODUCTIONThe latest craze to sweep the pharmaceutical industry is one of controlled-release drug delivery systems.
This controlled release can be systemic (generally via the bloodstream), as is generally the case for oral preparations, or act specifically at the site of greatest benefit (for example, in implanted devices) and these dosage forms are defined as preparations that modify the rate and/or the time and/or site of release of the active ingredient, in order to achieve specific therapeutic objectives which cannot be achieved with conventional dosage forms similarly administered.
