Pharmaceutical formulation of losartan

A pharmaceutical composition comprising losartan and pharmaceutically acceptable salts thereof and a process of forming the same. The pharmaceutical composition of losartan comprises an active agent comprising an effective amount of losartan or its pharmaceutical salt thereof, and pharmaceutically acceptable additives, wherein d(0.9) of losartan is less than 50mu and/or specific surface area is more than 0.6 m2/gm. The process of preparation of pharmaceutical composition of losartan, comprises the steps of blending the losartan having d(0.9) less than 50mu and/or specific surface area more than 0.6 m2/gm, with the other intragranular excipients, dry compression, milling and screening to obtain granules, said granules being subsequently blended with extragranular excipients and compressed to tablets which is further coated.