Saline or hydrogen peroxide gargles every few hours, liquid oral rinses (containing viscous lidocaine, diphenhydramine, and liquid antacid), anesthetic lozenges (benzocaine 15 mg every 3 or 4 hours), or chlorhexidine mouth rinses (1% solution) twice a day or 3 times a day may relieve the discomfort of stomatitis with oropharyngeal ulcerations.