How odd! I've been on MTX nearly 8 years (tablets & injections) but never had a yellow tongue. Maybe try a mouthwash if you don't already, I use Corsodil, it's effective.
I know your Rheumy nurse said it can be a side effect but I've never come across it anywhere & intrigued I've read the PIL thinking maybe something I'd missed that but there's nothing listed for a yellow tongue.
I take it you're not yellow anywhere else & your liver function test is within range?
I remember now! You had trouble getting it accepted at your Surgery. Ok, well the blood result you get today won't show your reaction to the increase, that'll be in the bloods you have done today. Are you having them fortnightly just now?
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