The present invention is aimed to formulate the non-enteric formulation of immediate release rabeprazole sodium tablet using acid-buffer technology. The formulation comprising the core tablet containing rabeprazole sodium compression coated with buffer containing super disintegrant. The coat formulation disintegrates fast which provide the higher pH environment then the core formulation gives drug release so degradation of rabeprazole sodium can prevent. From the above perception, the invention is aimed: 1.To study the pH stability of rabeprazole sodium in at different pH medium. 2.To select...