To help you gain weight, the primary treatment for pancreatitis-related weight loss is Pancreatic Enzyme Replacement Therapy (PERT), containing pancrelipase (a mix of lipase, amylase, and protease). These enzymes must be taken with every meal and snack to help your body digest and absorb nutrients properly. Your doctor may also recommend fat-soluble vitamins (A, D, E, and K) or an acid-reducing medication, like a proton pump inhibitor, to help the enzymes work more effectively. Please consult your gastroenterologist, as they will need to calculate your specific enzyme dosage based on your diet and stool tests to safely support your weight gain.