Chemotherapy is part of the standard treatment regimen for almost all cancer patients. However this crucial therapy comes with a host of side effects like diarrhoea constipation dry mouth so on and so forth. Here are some foods that will help you ease through the symptoms of chemotherapy and allow your body to respond better to this treatment. Liquid food: One of the common side effects of chemotherapy is dryness of mouth. This makes it tough for the patients to swallow solids. So liquids like low-fat milk or gravy-based light foods are recommended for patients undergoing this treatment.