Hi I'm on 10ml of mxt injections as I couldn't tolerate the tablets. So far they're not working (but accept I've only had 5 doses). Anyway the specialist nurse wanted to increase methotrexate dose as I'm in a bad flare but says she can't as I'm got lesions in my mouth which are bleeding and making it difficult to eat so she wants me to swap to Sulfazalazine tabs. I am really reluctant to do this as the nausea and headaches were so bad on MXT tablets and the Sulfazalazine seem to cause the same ( and can't be injected). I thought I'd found the answer with MXT injections as I didnt have any side effects at all. So confused and have to decide before tomorrow when I go in for a steroid injection and see the nurse. Anyone experienced mouth problems with MXT which have settled down??