18 ( 42.9 % ) patients reported nausea and 14 ( 33.3 % ) patients had vomiting in group P while 6 ( 14.4 % ) patients had nausea and 5 ( 11.9 % ) patients complained of vomiting in group DP during 0-24 h. Two patients in group P reported nausea while none in group PD during 24-48 h. No patient had vomiting in either of the groups between 24-48 h.