Abstract
Levobupivacaine is a long-acting local anesthetic that is both safe and non-toxic. However, few researchers have examined the efficacy and safety of peritonsillar injections of levobupivacaine for postoperative pain relief. The goal of this study was to assess current randomized controlled trials that employed this strategy. A literature review was conducted using databases such as DELPHIS, PUBMED, COCHRANE, and SCOPUS. A total of fifteen randomized controlled trials were found and thoroughly reviewed. There were no fatalities reported. One study reported a case of nausea and vomiting. In most of the studies, levobupivacaine with magnesium, epinephrine, dexamethasone hydrochloride, tramadol, or levobupivacaine alone were compared to a placebo. Four trials employed different combinations of levobupivacaine and other medicines to recruit adults. Most of the studies had a modest sample size. As a result, larger research with more representative populations should be conducted. Despite certain flaws in the trial design, our findings suggest that levobupivacaine is safe and effective at reducing postoperative pain.