How can i get rid of a canker sores on my upper gums?

See Dr.: These are commonly caused by the hsv-1 (virus). See a dr. For an exam and testing for the hsv-1 titer. There are some anti-viral meds that can help. Good luck.

Laser therapy: Some dentists use laser therapy to speed up healng of canker sores. A home remedy is mixing Benadryl (diphenhydramine) with pepto bysmol ( 50/50) and swishing to reduce the pain and coat the sores.

Aphthous ulcers?: Aphthous ulcers (whitish, shallow ulders with red rims) are quite common and can be quite painful. The exact cause is not known, but it is believed that an autoimmune process and/or viral infections are causing such. Treatment is usually controlling symptoms--pain, as they will resolve. Prescription steroid rinse may help. Avoid toothpaste containing sodium-lauryl-sulfate. Consult doc. Good luck.