The present invention relates to stabilized pharmaceutical formulations comprising therapeutically effective amount of Cariprazine premix/solid dispersion, or its pharmaceutically acceptable salts, esters, hydrates and solvates thereof, at least one diluent which is not having low water activity and optionally one or more excipients selected from lubricant, disintegrant and buffering agent or combinations thereof. The present invention further relates to process for preparation and method of using such stable formulations comprising Cariprazine.
