The present invention relates to pharmaceutical compositions of Proton Pump Inhibitor and process for preparation of such composition thereof. The invention relates to pharmaceutical compositions comprising Proton Pump Inhibitor, crospovidone, basic inorganic salt and one or more pharmaceutically acceptable excipients. The present invention provides stable pharmaceutical compositions of Dexlansoprazole which are bioequivalent to marketed dual delayed release pharmaceutical compositions of Dexlansoprazole.
