Bye Mouth Ulcer! 15ml is a mouth ulcer treatment that forms a protective layer over the mouth ulcer and immediately relieves the pain. Bye Mouth Ulcer!™ is recommended by dentists. Bye Mouth Ulcer! offers:IMMEDIATE PAIN RELIEF Protective layer Clinically proven effectiveness Recommended by Dentists All about Bye Mouth Ulcer! Bye Mouth Ulcer! is a medical device with a clinically proven effect on mouth ulcers (solitary or numerous painful, recurring swellings of the oral mucous membrane). Bye Mouth Ulcer! is intended to be used for the local treatment of mouth ulcers