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Abstract

The Present study focuses on the challenges facing the development of oral insulin the fact we have no formulation in market, being an attractive and advantageous over the regular injections. Physiological and biological factors of the insulin has great influence for the development of an oral formulation with many difficulties regarding the stability over gastric pH and proteolytic enzymes, selection of the proper formulation and its components depends on these conditions. The development with insulin therapy are needed with better patience compliance, low toxicity, higher glycemic control, thereby Diabetes related complications occurrence can be prevented. INTRODUCTION: In terms of efficacy, insulin in form of parental route is satisfactory, however it is associated with some severe adverse conditions like, peripheral hyperinsulinemia, smooth muscle cell proliferation, diabetic macro and micro angiopathy, lipoatrophy or lipohyertophy have become very common. Insulin delivery by oral route is not effective due to its susceptibility to enzymatic degradation in GI & Permeability across intestinal epithelium is low 1, 2. The proper combination of Multifunctional polymers will result a better biocompatible, biodegradable, hydrophilic and protective characteristic with better absorption orally in the GI 3 .