After taking the pain reliever, the mean of pain score in morphine group was (0.75 ± 1.31) and in acetaminophen group was (2.41 ± 3.29), which revealed a statistically significant difference in compare to the time of before intervention. In other words, morphine (P = 0.001) and acetaminophen (P = 0.014) have been effective, separately.
intravenous morphine
 intravenous acetaminophen
vomiting