There are a variety of disease states (Cancer, AIDS, Cardiac diseases) where systemic drug administration has poor efficacy due to low solubility, random body distribution and toxicity problems. 

Therefore, drug entrapped in polymeric beads offer novel drug delivery approach for an intended application, such as targeted locations and long-term delivery times (days, weeks, months, and even years). Multiparticulate drug delivery systems have various well known advantages over single unit dosage forms. The potential use of microspheres in pharmaceutical industry has been considered since the 1960s for the following applications.

• Taste and odor masking

• Conversion of oils and other liquids to solids for the ease of handling

• Protection of drug against the environment (moisture, light heat)

• Improvement of flow properties of powders

• Separation of incompatible materials. Read more>>>>>>>>>>>>>>