PURPOSE OF REVIEW: This review summarizes the literature on IL-23 inhibitors for inflammatory bowel disease and the role of these agents in clinical practice. RECENT FINDINGS: The last decade has seen several pivotal trials investigating IL-23 inhibitors. These agents are effective in inducing and maintaining remission of moderate-to-severe inflammatory bowel disease, including among those with prior biologic failure, and have low adverse events. IL-23 inhibitors are safe and effective for treatment of moderate-to-severe inflammatory bowel disease and appear more effective than ustekinumab for Crohn's disease. The currently available IL-23 inhibitors likely have similar efficacy, but practical considerations may influence preferences.