OBJECTIVE:To study the preparation of famotidine dispersible tablets and to observe the dissolution characteristics in vitro METHODS:To optimize the conditions for preparation by orthogonal design RESULTS:The tablets could completely disintegrate within 1 min;In vitro dissolution test showed T50=0 56min CONCLUSION:In comparison with commercial famotidine tablets,the dispersible tablets prepared in optimum condition were rapid in disintegration and homogenous in dispersal