“…However, for mechanical, chemical, hydrostatic, enzymatic, infectious, allergic, and thermal mechanisms that are suspected to trigger PEP, evidence demonstrates that one or more of them are responsible for PEP or influence its severity. 4 Several pharmacologic agents have been tried to avoid or alleviate PEP, such as anti-inflammatories (indomethacin and diclofenac), 5 antioxidants (allopurinol and N -acetylcysteine [NAC]), 6 , 7 antibiotics, 8 and epinephrine. 9 Rectal non-steroidal anti-inflammatory drugs are the cornerstone of PEP prevention according to the European Society of Gastrointestinal Endoscopy guidelines.…”