Sustained suppression of enterohepatic circulation of mycophenolic acid by antimicrobial‐associated diarrhea in a kidney transplant recipient with Crohn's disease: A case report

Abstract Mycophenolic acid (MPA) undergoes enterohepatic circulation. A kidney transplant patient on mycophenolate mofetil was treated with tazobactam/piperacillin for pyelonephritis, and developed antimicrobial‐associated diarrhea. Consequently, the MPA trough level decreased by approximately 90%. Furthermore, it took approximately a month for the MPA level to normalize even after diarrhea had resolved.