Good morning, My dear, let me try to explain. During acute pancreatitis the presence of protein in the small bowel stimulates the pancreas to secrete enzymes thus aggravating an already inflamed organ. The most important thing to do until his appointment is to keep the hydration and electrolytes normal. Oral feeding cannot begin until substantial improvement in symptoms and then it will start with a low-fat diet as a general rule. There are supplemental drinks that can be purchased to comply with the liquid diet order yet still provide calories from carbohydrates, should be low fat. . .actually, he should remain on a liquid diet just as the doctor suggested.Electrolytes can be replaced with sports drinks and they will provide calories. Absolutely no solid food until the doctor is consulted, the pancreas settles down, and then oral food can be re-introduced. To answer your question, please don t add a protein supplement to clear broth as I explained above. Thursday will be here soon. Please write back if need be for dietary guidance after acute pancreatitis resolves as a different diet order will be given by the doctor. I have a private portal you can visit for such instruction. Thank you for visiting. Kathryn Shattler,MS,RDN