Microspheres an Innovative Approach in Drug Delivery System

Recently micro particles or microspheres have gained great attention due to their free flowing powder characteristics and biodegradable nature generally made up of protiens or synthetic polymeric materials having particle size in the range of 1-200μm. Depending upon the encapsulation of active drug moieties there are two types of microspheres (microcapsules and micro matrices). Microcapsules are multiple unit dosage forms in which active drug molecule is encapsulated and surrounded by separate polymeric wall but in case of micro matrices drug is uniformly dispersed throughout the polymeric matrix [1-3]. Microspheres have number of advantages over conventional drug delivery systems including an important or effective for administration of therapeutic active molecules in controlled and sustained manner to the target site with improved therapeutic effects [4,5] (Table 1). Volume 5 Issue 1 2018