A new method based on flow-through cell apparatus to evaluate dissolution consistency of nimodipine tablets

A new method of dissolution test was established to better simulate the in vivo dissolution behavior of drugs from preparations and to distinguish the quality difference between drug preparations. With flow-through cell being chosen to be the dissolution apparatus and nimodipine tablet to be the model drugs, this study developed, on the basis of IVIVC theory, a new dissolution method which was subsequently used to evaluate the dissolution consistency of domestically produced nimodipine tablet as test preparation and its reference preparation. Meanwhile, conventional four-dissolution-curves method based on paddle apparatus was selected for comparison to evaluate the efficiency of the new dissolution method. The results indicated that the new dissolution method not only had a good correlation with the in vivo process of drugs, but also could reveal the internal quality differences between pharmaceutical preparations effectively. This research will provide further theoretical support for the application of flow-through cell apparatus in IVIVC study.