Nutritional Supplementation in Head and Neck Cancers

Inclusion Criteria: 1. Patients must have the ability to read, understand, and sign an informed consent and must be willing to comply with study treatment and follow-up. 2. Male or female 3. ≥18 years of age 4. Histopathologically confirmed primary squamous cell carcinoma of the oral cavity and oropharynx, larynx or hypopharynx, who have agreed to receive radical intent radiotherapy as primary treatment or adjuvant treatment post-surgery, with or without platinum chemotherapy 5. Capable of volitional oral nutritional intake at baseline. 6. A diagnostic CT image taken with a maximum of 30 days before initiation of radical intent radiotherapy. If the CT scan history in the patient's clinical record does not include a study within this window, a baseline non-contrast enhanced CT abdomen will be conducted. 7. An Eastern Cooperative Oncology Group Performance Status of ≤ 2 Exclusion Criteria: 1. Fed by nasogastric tube, gastrostomy or total parenteral nutrition 2. Cancer of the nasopharynx, thyroid or salivary gland 3. Life expectancy \<6 months. 4. A known hypersensitivity / allergy to the investigational product or to any ingredient in their formulations (e.g. Milk/Lactose, Fish). 5. Enrolment in any other clinical protocol or investigational study with an interventional agent or assessments that may interfere with study procedures. 6. Patients with untreated brain metastases (patients with previously resected and/or radiated brain metastases without neurologic symptoms are permitted). 7. Poorly controlled chronic illnesses or other inflammatory diseases (e.g. COPD, uncontrolled non-insulin dependent diabetes, rheumatoid arthritis). 8. In the investigators' opinion, patients who have medical conditions that could interfere with nutrient metabolism or absorption (e.g., short bowel syndrome, Crohn's disease, etc.)