In a current scenario of a drug research and development, regulatory requirement is very stringent and much of importance that any new or established drug / drug formulation must remain stable till it will utilize by a patient. The stability issues are greatly influence the drugs therapeutic property hence it is important to maintain the all the factors and parameters which may alter the drugs physico-chemical properties. To study the effect of various environmental factors on drug stability, stability indicating method play vital role. In presented work we have mainly discussed two stability...