This is the fourth reported case of acute pancreatitis associated with acetaminophen overdose. The patient had ingested the smallest amount of acetaminophen (9.75-13 g) that has been reported to produce acute pancreatitis. This patient also suffered liver and renal impairment and developed an ileus and ascites. Despite late therapy and laboratory tests that indicated a poor prognosis the patient made a complete recovery without sequelae.