The effects of paracetamol used intravenously
are known to be stronger and longer lasting than
when it is used orally or rectally (Gorocs et al 2009, neal 2009, and its efficacy can be compared to that of iV morphine (Bektas et al 2009) and ketoralac (Zhou et al 2001). in addition, iV paracetamol produces fewer side effects and is safer to administer. For these reasons, it should be a treatment option for patients with renal colic presenting to eDs.