**1. Introduction**

Polymers are non-pharmacological agents and use as excipients. They possess special properties and are used in site targeting, taste masking and to increase patient compliance [1].

Herman Staudinger, Nobel Prize winner (1953) German scientist coined the term "Macromolecules" in reference to Polymer [2].

 The word 'Polymer' is derived from the Greek word and is made up of two words 'Poly' and 'meros'. Poly means 'many' and meros (Mers) mean 'parts or units of

 high molecular mass'. Polymer molecule consists of a large number of repeated units of monomers by covalent bonds. The monomer is a single structural unit while the polymer is macromolecule.


 Polymerization is a chemical process through which two or more than two monomers are attached together and formed a macromolecule (polymers) in which there is repeated units of monomers.
