Diabetes is a chronic condition that occurs extremely due to a combination of sedentary lifestyle and following an imbalanced diet. Thus the medications are to be taken for life time. So there is a need for the prescribers to prescribe the medication which would be cost effective to the patients. This study was planned to analyse cost variations of antidiabetic drugs available in Indian market. There is a wide range of variations as the price of drug marketing in India. This paper gives the information regarding the drugs available for diabetes, their available brands, average cost and cost variations. Which help the physician in giving the drugs to the respective patient which are effective to them as well as which are cost efficient and are afforded easily by the patient. As a result of which there will less medication non-adherence and increased patient compliance. It was conducted by taking the maximum and minimum cost of anti- diabetic agents manufactured by different brands of same drug, strength and dosage forms. The data is obtained from the current index of medical specialties [CIMS] April-July 2018. The cost ratio and percentage cost variations were calculated for each anti-diabetic drug. The average percentage price variation of different brands of the same oral anti-diabetic drugs in Indian market is very wide.