“…Although 5-ASA medications have proven clinical efficacy, some of them can cause serious side effects. For instance, sulfasalazine has been associated with drug eruptions, drug-induced hypersensitivity syndrome, and acute pancreatitis [ [4] , [5] , [6] ]. Salicylic acid preparation and immunosuppressive therapy won't cause any effective effects on some patients [ 7 ].…”