This study will seek to assess the experience of using of coconut oil as an approach to managing radiation-induced xerostomia in patients previously treated for cancer in the head and neck. There is a high prevalence of radiation-induced xerostomia in this patient population, and the condition has significant negative impact on patients' quality of life. There is currently no agreed-upon standard of care for the treatment of this condition. Anecdotal evidence from patients and both physicians and allied healthcare providers suggests improvement in this condition with the use of coconut oil, but this has not previously been formally studied. We therefore propose a case series study to formally assess the tolerability and efficacy of coconut oil as an approach to managing radiation-induced xerostomia.