In limited trials, tetracycline mouth rinse, betamethasone gel, beclomethasone spray, and amlexanox significantly reduced ulcer duration and pain. In contrast, chlorhexidine mouthwash had no ...

Canker sores are “open sores in the mouth,” says Howard Sobel ... Swishing a few extra times with your regular antibacterial mouthwash may relieve pain, says Dr. Sobel. But a hydrogen peroxide ...