Sarah A. Chase, PharmD reviews the pathophysiology and current treatment strategies for inflammatory bowel disease, defines the clinical application of therapeutic drug monitoring of biologic therapies used in inflammatory bowel disease and discusses biologic therapy optimization based on therapeutic drug monitoring. For more pharmacy content, follow Mayo Clinic Pharmacy Residency Programs @MayoPharmRes or the host, Garrett E. Schramm, Pharm.D., @garrett_schramm on Twitter! You can also connect with the Mayo Clinic’s School of Continuous Professional Development online at https://ce.mayo.edu/ or on Twitter @MayoMedEd.