The authors hypothesized that an interprofessional workshop would improve geriatrics trainees' medication management. The workshop was based on a needs assessment and comprised an interactive session with pharmacists on managing medications in elderly adults. Participants were trainees in their geriatrics rotation at a tertiary care medical center. Trainees completed a medication appropriateness survey for three patients, one of which was their own. After the workshop, trainees reviewed medications of the three patients. Trainees completed online surveys after their rotation and 3 months later. Of 95 trainees rotating through geriatrics, 76 (80%) attended the workshop and completed the worksheet. Trainees' scores on reviewing medication lists improved significantly, from 6.7 ± 2.3 to 7.7 ± 2.0 out of 11 for standardized patient 1 (P < .001) and from 5.7 ± 1.8 to 6.4 ± 1.5 out of 11 for standardized patient 2 (P = .009). Trainees' scores on their own patients' lists also improved significantly, from 5.6 ± 1.5 to 6.6 ± 1.5 out of 10 (P < .001). After the workshop, 95% (71/75) planned to change the medication regimen of the patient they presented, and 93% (68/73) planned to change other patients' medications based on information learned during the workshop. Three months later, 35% (12/34) had made changes to the regimen of the patient they discussed during the workshop, and 71% (15/21) had made changes to other patients' regimens. Seventy-eight percent (18/23) rated the workshop as the top nonclinical experience of their geriatrics rotation. In conclusion, this interprofessional medication management workshop improved trainees' ability to perform medication reviews accurately and led to change in self-reported prescribing behavior.