Purpose of Coating

   Purpose of Coating 

Coating is like a cover of core tablets. To protect the tablet from light, moisture, temperature and finally for the elegance of the product. Coating  of a tablet using powdered granule. It is prepared by feeding previously compressed tablets in to a special machine and compressing another granulation layer around the preformed tablets. Pill coated with a sugar or film coating. 

Purpose : 
 

            i) To mask bitter and unpleasant taste and odor and color of the drug

            ii) To beat abdomen or stomach irritation

            iii) To overcome decomposition of the drug

            iv) To maintain prolong action

v) To make tablets shape smooth

vi) Improved esthetic qualities of the product

vii) Enabling the product to more easily swallowed by the patient and improving product stability.

viii) To provide physical and chemical protection for the drug.

ix) To incorporate another drug or formula adjustment in the coating to avoid chemical incompatibilities or the provide sequential drug release.

x) Modifying drug release characteristics and to improve the pharmaceutical elegance by use of special colors and contrasting printing.