This early phase I trial studies how well loratadine works in reducing granulocyte-colony stimulating factor (G-CSF) induced bone pain in patients with multiple myeloma who are undergoing stem cell mobilization. Loratadine is an antihistamine that may help to reduce or control bone pain during the process of stem cell collection in patients with multiple myeloma.
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Change in mean pain level for each group following therapy
Timeframe: Baseline up to 5 days after completion of stem cell mobilization