Clonidine and Morphine as Adjuvants for Caudal Anaesthesia in Children: A Systematic Review and Meta-Analysis of Randomised Controlled Trials.
Shilpa GoyalAnkur SharmaDevalina GoswamiNikhil KothariAmit GoyalVaruna VyasRichard KirubakaranRanjit SahuSurjit SinghPublished in: Turkish journal of anaesthesiology and reanimation (2020)
Clonidine is just as effective as morphine when used an adjuvant to local anaesthetic for caudal block, and has a more desirable side effect profile, particularly with respect to postoperative nausea and vomiting.