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  • Title: Ondansetron versus granisetron, both combined with dexamethasone, in the prevention of cisplatin-induced emesis. Italian Group of Antiemetic Research.
    Journal: Ann Oncol; 1995 Oct; 6(8):805-10. PubMed ID: 8589019.
    Abstract:
    BACKGROUND: Differences in pharmacodynamic and pharmacokinetic characteristics among serotonin-receptor antagonists have been reported in preclinical studies. This prompted us to carry out a study to determine whether such differences are important in terms of clinical efficacy or tolerability. PATIENTS AND METHODS: 973 consecutive cancer patients scheduled to receive cisplatin for the first time (at doses > or = 50 mg2), entered a double-blind multicenter randomized study comparing intravenous ondansetron 8 mg versus granisetron 3 mg. Dexamethasone 20 mg was added to both serotonin antagonists. On days 2 to 4 after chemotherapy all patients received oral metoclopramide plus intramuscular dexamethasone as antiemetic prophylaxis for delayed emesis. Nausea and vomiting were assessed daily until day 6 after chemotherapy. RESULTS: We evaluated 966 patients (483 receiving ondansetron and 483 granisetron). Complete protection from acute vomiting/nausea was obtained in 79.3%/72.0% of patients receiving ondansetron and in 79.9%/71.8% of those receiving granisetron. Complete protection from delayed vomiting/nausea as obtained in 69.7%/52.9% and 70.0%/49.6% of patients receiving the ondansetron or granisetron regimens, respectively. Adverse effects were mild and not significantly different between the two antiemetic regimens. CONCLUSIONS: Ondansetron 8mg and granisetron 3 mg, both combined with dexamethasone, showed similar efficacy and tolerability in the prevention of cisplatin-induced emesis. The choice between the two regimens can be dictated by their respective purchase prices.
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