I had mouth ulcers. It was that methotrexate. I discontinued talking it and I was fine.

My rheumetologist said for me to take 2 of the folic acids pills if getting mouth sores. They are a side effect of the methotrexate. I don't know what you are taking but if Methotrexate ask your Dr.for recommendation

Yes. The Dr. Put me on Lidocaine, oral. Worked wonders.

I am on MTX and didn't even think my mouth ulcers were connected to anything to do with my RA. This has been very useful to know. Thank you all.

Yes, for decades 😣