Electrolite system PMT TDZ CPM RSH ± µ. RSH ± µ RSH ± µ I 0.666 ± 0.006 0.608 ± 0.012 0.506 ± 0.007 II 0.551 ± 0.010 0.594 ± 0.010 0.487 ± 0.008 III 0.632 ± 0.009 0.612 ± 0.006 0.495 ± 0.005 Where: µ - Confidence limit, p=95%;

Table 1: The mean RSH value of promethazine, thioridazine and chlorpromazine (n=5).