Hello Michaelii-Ethyol/Amifostene is used to :"reduce incidence of moderate-severe radiation-induced xerostomia in patients undergoing postoperative radiation for head/neck cancer where the radiation portal includes a substantial part of the parotid glands" (Micromedex)
My dad gets a subcutaneous injection daily before radiation. They have to monitor Blood Pressure-he is young-does great with it. Ask them-

Dad Treated for T2N1M0 Tonsil Cancer August 2005. 35 IMRT radiation, 3 doses Cisplatin. Selective Modified Neck Dissection November.