Polymorphic form of olmesartan and process for its preparation

A process for the preparation of a novel crystalline polymorph of olmesartan medoxomil, designated Form G, is provided comprising the steps of (a) preparing a solution comprising olmesartan medoxomil and one or more solvents selected from the group consisting of a nitrile, alcohol and mixtures thereof at a suitable temperature to obtain a solution; and (b) recovering olmesartan medoxomil substantially in polymorph Form G from the solution. A novel polymorph Form G of olmesartan medoxomil and pharmaceutical compositions containing same are also provided herein.