Highlights of the bookInstrumental analysis of some anti-diabetic drugs like Metformin Hcl, Gliclazide,Teneligliptin,Diclatasvir. It includes Analytical method development and validation for estimation of anti-diabetic drugs.Objective: The objective of this study was to develop a simple, efficient, specific, precise and accurate RP-HPLC and U V Spectroscopic method for Metformin Hydrochloride ,Gliclazide,Teneligliptin and Diclatasvir as well as to study stress degradation study of Teneligliptin and Daclatasvir.