Olanzapine 2.5 vs 5 mg in Quadruplet Nausea/Vomiting Prophylaxis Before High-Dose Melphalan

Summary

Patients who receive a chemotherapy called melphalan are at high risk of having nausea and vomiting. A medication called olanzapine has been shown to decrease nausea and vomiting after chemotherapy. A previous research study found the 10 mg dose of olanzapine (combined with 3 standard medications used routinely to prevent nausea/vomiting) to be effective for patients who received melphalan chemotherapy, but several other studies have shown many patients have a side effect of sleepiness (e.g., sedation) with that dose of the medication. Our study will compare two lower doses of olanzapine (5 mg and 2.5 mg) in combination with the 3 standard medications used to prevent nausea/vomiting in the patients who receive melphalan chemotherapy to determine which dose is effective in preventing nausea and vomiting with the lowest amount of sleepiness side effect.

Detailed Description

This study is a randomized, double-blinded trial comparing olanzapine 2.5 mg vs 5 mg in combination with standard triplet antiemetic prophylaxis in patients with multiple myeloma who are receiving high-dose melphalan conditioning chemotherapy before autologous stem cell transplantation to determine chemotherapy-induced nausea and vomiting (CINV) and sedation outcomes.

Eligibility Criteria

Interventions