Oral pharmaceutical compositions and process for preparation thereof are provided comprising at least one gastric acid suppressing agent, preferably a proton pump inhibitor or its pharmaceutically acceptable salts, esters, hydrates, derivatives or prodrugs,, and one or more prokinetic agent or its pharmaceutically acceptable salts, esters, hydrates, derivatives or prodrugs, optionally with other pharmaceutically acceptable excipients, characterized in that the gastric acid suppressing agent is present in a delayed release form and the prokinetic agent is present in a bimodal release form such as an immediate release form to provide an initial loading dose, and a delayed release form to provide a dose with a lag time with the provisio that the prokinetic agent is not formulated using a hydrophilic rate controlling polymer and is not present in a sustained release form. Method of treatment of gastro esophageal reflux disease, reflux esophagitis, peptic ulcer, gastric ulcer, and other gastric acid related disorders by administering to a patient such a pharmaceutical composition in need thereof is also provided.
