5-HT3 receptor antagonists for radiotherapy-induced nausea and vomiting
Evidence Summaries
A systematic review 1 including 5 studies with a total of 474 subjects was abstracted in DARE. Ondansetron was significantly more efficacious than metoclopramide for the complete control of acute vomiting (relative benefit 1.98, 95% CI: 1.47, 2.65; NNT 2.2) and acute nausea (relative benefit 1.71, 95% CI: 1.17, 2.51; NNT 3.6) in a placebo-controlled trial. Granisetron was significantly better than metoclopramide in preventing vomiting and mild nausea (relative benefit 4.0, 95% CI: 1.01, 15.8; NNT 2.5). There is no evidence that these drugs are of any benefit beyond 24 hours.
Comment: The quality of evidence is downgraded by potential reporting bias and limitations in review methodology.
References
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