ANALYTICAL CHEMISTRY PLAYS A CRITICAL ROLE IN THE DEVELOPMENT OF A COMPOUND FROM ITS SYNTHESIS STAGE TO ITS MARKETING STAGE AS A PART OF A DRUG FORMULATION AND ANALYSIS. THE INSTRUMENTAL METHODS FOR QUANTITATION WHICH ARE MOST COMMONLY USED IN A PHARMACEUTICAL LABORATORY FALL INTO FOUR BASIC CATEGORIES: CHROMATOGRAPHY, SPECTROPHOTOMETRIC, ELECTROCHEMICAL, AND RADIOMETRIC ANALYSIS. ELECTROANALYTICAL CHEMISTRY HAD ITS ORIGINS EIGHT DECADES AGO. IT IS ONE OF THE FUNDAMENTAL SUBDISCIPLINES OF ANALYTICAL CHEMISTRY. IN THE LAST EIGHT DECADES, ELECTROCHEMICAL METHODS HAVE BECOME A POPULAR TOOL FOR THE STUDY OF ELECTROCHEMICAL REACTIONS AND DETERMINATION OF TRACE CONCENTRATIONS OF BIOLOGICAL AND CLINICALLY IMPORTANT COMPOUNDS.TILL NOW, THE COMMONLY EMPLOYED TECHNIQUES FOR THE DETERMINATION OF THE DRUGS ARE BASED ON HPLC, LC/MS, SPECTROSCOPY, AND MICROBIOLOGICAL ASSAYS. SUCH TECHNIQUES FOR THE MEASUREMENT OF BIOLOGICAL CONCENTRATION ARE NECESSARY IN A CLINICAL ENVIRONMENT TO ENSURE THAT ADEQUATE DRUG LEVELS CAN BE MAINTAINED WHILE AVOIDING TOXIC CONCENTRATIONS OF SUCH DRUGS. THE PROBLEMS ENCOUNTERED USING SUCH METHODS ARE EITHER THE NEED FOR DERIVATIZATION OR THE NEED FOR TIME-CONSUMING EXTRACTION PROCEDURES. SINCE THESE TECHNIQUES HAVE EXPENSIVE INSTRUMENTATION AND RUNNING COSTS, THE USE OF SIMPLER, FASTER, AND CHEAPER, YET SENSITIVE, ELECTROCHEMICAL TECHNIQUES CAN BE INTERESTING ALTERNATIVES, ESPECIALLY THOSE BASED ON ELECTROANALYTICAL TECHNIQUES.ELECTROCHEMISTRY HAS MANY ADVANTAGES, MAKING IT AN APPEALING CHOICE FOR PHARMACEUTICAL ANALYSIS.ELECTROCHEMISTRY HAS ALWAYS PROVIDED ANALYTICAL TECHNIQUES CHARACTERIZED BY INSTRUMENTAL SIMPLICITY, MODERATE COST, AND PORTABILITY. THESE TECHNIQUES HAVE INTRODUCED THE MOST PROMISING METHODS FOR SPECIFIC APPLICATIONS.