<prompt> Which of the following is a cytoprotective agent against radiation induced stomatitis?AmifostineMetronidazoleMisinidazoleAcarbose  <response>: Ans. is a i.e., Amifostine Amifostine It is an organic thiophosphate On activation by alkaline phosphatase it acts as a cytoprotective agent against cancer chemotherapy and radiotherapy. Mainly used for prophylaxis of cisplatin induced neuronephrotoxicity and radiotherapy related stomatitis. 