“…They may also generate toxic metabolites (like nucleoside reverse transcriptase inhibitors) or induce hypetriglyceridemia (like estrogens), or give an immuno-mediate reaction (like sulfonamides). 17 Drugs inducing pancreatitis are classified in four classes: Ia (drugs with at least one case report, evidence of a positive re-challenge, and exclusion of other causes of AP, such as codeine, cytarabine, dapsone, enalapril, furosemide, isoniazid, mesalamine, metronidazole, pentamidine, pravastatin, simvastatin, sulfamethoxazole, sulindac, tetracycline, valproic acid), Ib (the same but without exclusion of other causes of AP such as amiodarone, azathioprine, dexamethasone, lamivudine, losartan, 6-MP, premarin, trimethoprim-sulfamethoxazole), II (at least four case reports with a consistent latency period for at least 75% of the cases, for example: acetaminophen, clozapine, erythromycin, estrogen, propofol, tamoxifen), III (at least two case reports but without re-challenge data or a consistent latency period, like alendronate, carbamazepine, ceftriaxone, clarithromycin, cyclosporin, hydrochlorothiazide, ribavirin, metformin, minocycline, naproxen, prednisone, prednisolone), and IV (one case report without re-challenge data, for example ampicillin, cisplatin, colchicine, cyclophosphamide, diclofenac, doxorubicin, interleukin-2, octreotide, propoxyphene, rifampin, risperidone, sertraline, tacrolimus, vincristine). The management of the patient with acute pancreatitis Acute pancreatitis has also been reported during therapies with interferon (both in the standard and pegylated form) in patients with chronic hepatitis B and C (in these cases in association with ribavirin), may be due to immune modulation effects of the drug.…”