The discontinuation of oral oncology medications before the full-month supply has been finished results in medication waste, leading to increased costs for patients and for payers. Split fills allow for a 14- to 16-day supply for oral oncology medications rather than a full 28- to 30-day supply. Researchers compared the discontinuation rates, patient-reported adverse events, estimated pharmacy costs, and potential waste in patients with pharmacy benefit designs that included a split-fill option with patients who did not have this option (Staskon FC, et al. J Oncol Pract. 2019;15:e856-e862).
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