How to get rid of an ulcer inside my mouth?

Zilactin: Zilactin will give temporary relief even though it stings at first. More important is to find the cause of your ulcers if they are a recurring problem. Some possibilities are vitamin deficiency, change in mouth wash or toothpaste, sudden change in diet particularly to acid foods, .

Warm salt water: Rinse it out with warm salt water every few hours and wait 2 weeks and it will go away by itself.