Lactobacillus Reuteri Alleviates Oral Mucositis in Patients Undergoing Radiotherapy for Malignant Head and Neck Tumors

Lactobacillus reuteri lozenges (NOW Foods, Sweden) contained 2×10\^8 CFU viable cells of Lactobacillus reuteri as the active ingredient.

Starch preparations that look and taste like Lactobacillus reuteri.

One of the inclusion criteria for the study was that patients with squamous carcinoma of the head and neck (including nasopharyngeal carcinoma) needed to receive either radiotherapy alone or simultaneous radiotherapy and chemotherapy.