Hi, I had gone through your question and understand your concerns. Gčucerna is a nutritional supplement used when some patient has poor appetite or feel that diet is lacking, It contains a variety of nutrients you need for good health, and of course that it can be used in people with any form of cancer or other serious diseases and in cahexic conditions. However, you need to be aware that this is not cure or medication and it will not affect tumor progression or have any significant effect on prognosis. It just replaces food that patient usually can take in sufficient amounts. So my answer is, that Glucerna can be taken in these patients especially if there is rapid weight loss and poor apetite, but conventional methids for cancer fight should be followed. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.