The disease itself along with heavy medication is likely responsible for your complaints. Try alternative medication like homoeopathy which is excellent in such situations. More details like your family history, past history, thermals, thirst, desires aversions, attitudes is required to make a prescription especially in a chronic case such as yours. Consult in private with the above details. More questions may be asked if required.
If an ulcer is not responding to topical anaesthetic or corticosteroid for more than one week it's better to visit a dentist to rule out other causes of ulcers some of which needs attention immediately.
If the mouth ulcer is causing a lot of pain, gently rub a small ice cube over the spot or rinse your mouth with ice-cold water. You could also chew on a clove bud (lavang) and direct the juice generated to the area where the ulcer is located. Clove buds are a great ingredient to cure sore throat too. To prevent the ulcerated area from getting infected, make it a point to rinse your mouth with a little salt water. Remember, this won’t make the ulcer disappear, but it can help reduce the pain.
Honey is a natural humectant. It helps reduce scarring and hastens the process of new tissue growth. This, along with its anti-microbial effect ensures faster healing of the mouth ulcer.
Chew a few leaves of tulsi along with some water about three to four times every day. This will help in getting rid of ulcers faster and also have a preventive action against their recurrence.
Applying a little coconut oil directly onto the mouth ulcer or chewing some coconut (fresh or dry) helps reduce pain and inflammation and hence, ulcers heal faster.
Mix some sugar to crushed khus-khus seeds and consume this mixture for instant relief from ulcers.
You could apply a little ghee directly to the ulcerated area, or drink a glass of buttermilk two or three times every day.
Mouth ulcers left untreated generally go away in a week or so; with these home remedies, you can expect faster relief. However, if you notice an ulcer in the mouth that is persistently present although it does not cause you any pain, do not neglect it or try to treat it with home remedies beyond a few days. Make it a point to see a doctor soon because often, a painless mouth ulcer is one of the earliest signs of oral cancer.