Inclusion Criteria:  >18 years of age Presentation with acute pancreatitis as defined by two of three criterion per the Revised Atlanta Criteria guidelines: (a) Amylase or lipase > 3x the upper limit of normal, b) Classical abdominal pain, c) Ultrasound or computed tomography of unequivocal pancreatitis. Such radiographic findings include swelling, edema, or heterogeneity of the gland or peripancreatic fluid or stranding  Exclusion Criteria:  Pregnant or breastfeeding women Incarcerated patients Patients < 18 years of age Patient unable or unwilling to give informed consent Patients transferred from another hospital The possibility of poor oral intake for reasons other than acute pancreatitis (e.g. intubation, failure to pass an indicated swallow study for aspiration risk, anorexia secondary to active malignancy, etc) Surgical intervention for infected pancreatic necrosis or pancreatic hemorrhage Chronic pancreatitis based on radiographic evidence Severe pancreatitis based on Revised Atlanta Criteria. Under Revised Atlanta Criteria, patients will be excluded if they have a composite Modified Marshall >2 Etiologies of hypertriglyceridemia, trauma and autoimmune pancreatitis will be excluded