影响盐酸维拉帕米脉冲释放片体外“时滞”的因素考察
The factors influencing lag time of pulsed release tablet of verapamil in vitro
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Abstract: OBJECTIVE:To investigate the factors that influence dissolution characters of pulsed release tablet(PRT) of verapamil.METHODS:The different pulsed release systems were prepared and dissolution tests were conducted to determine the begin time of each PRT.R