Background: At Dana-Farber Cancer Institute (DFCI), timing of order release to the pharmacy is a contributing factor to safety and processing concerns for oral investigational medications. Day-of release can lead to delayed delivery to the patient, creating a risk of missing timed specific protocol data collection, and rushed critical pharmacy safety checks, an issue raised in a comprehensive proactive systems safety risk assessment. We conducted a pilot project aimed at improving the safety and efficiency of oral investigational medication processing within the pharmacy by releasing prescription orders at least 24 hours in advance of a patient’s appointment. Methods: A team of pharmacists, nurses, process improvement professionals, and a physician designed a pilot project where the prescriber released oral investigational prescriptions, from 9 selected research protocols, at least 24 hours before a patient’s appointment. From 11/2/2018-3/1/2019, we used manual timestamp data to compare prescription processing times for prescriptions released at least 24 hours in advance (“released early”) to prescriptions released less than 24-hours in advance (“not released early”). Qualitative feedback was obtained to assess pilot impact on prescription processing safety. Results: As shown in the table below, prescription processing time on day of patient appointment for prescriptions released early was shorter, on average, compared to those not released early (p < 0.05). Due to orders being released early, pharmacy staff noted feeling less pressure during prescription checks and a better ability to proactively assess inventory and prescription issues. Conclusions: Releasing oral investigational prescriptions early reduced the prescription processing time and increased time available for safety checks. Expanding this workflow change to all investigational medication orders can increase the safety and efficiency of prescription processing at DFCI.