Yes you are being silly. So, so, so often things work better with a DMARD added to biologics and for some biologics it seems it’s manadatory to add them in order to stop you developing antibodies to them.
And out of all the DMARDS he could have chosen, he’s chosen the most benign one. With this disease, I’d take all the medications offered to keep it at bay and to keep me functional. I do get your wish though to keep medications to what’s necessary but if it’s not lasting the month and adding this one might help that, boy would I give that a shot and see. Simply because it’s sounding like it’s necessary.
Sulfasalazine was my first proper DMARD which actually worked but at 3000mg per day. However it was built up really slowly - first week one 500mg tablet per day, second week one twice a day and so on. So build it up that way, rather than lash out with 2 per day. Initially I took an anti-nausea tablet to halt any sickness (never felt sick on it - no idea if that was due to the anti nausea or not though!). So why not just give it a go and see, if it doesn’t work, if it’s not the drug for you, then you just stop it and it’s back to the drawing board. But at least then you’re one step further to finding a combination or just new drug that just does work better for you. And getting to that point surely is the object of the exercise?
Sulfasalazine didn’t like me adding a biosimilar to enbrel (Benepali) to it and threw a wobbly about 5 months after. Just seen my rheumy this week and she said it was a extremely rare issue, but not unheard of, but stressed it was extremely rare. And later if needed in order to make Benepali work better, we might try adding it back again but at your low dose instead of the mega dose I was on. But up to that point I thought sulfasalazine was a brilliant drug, no side effects, no lifestyle changes, no much of anything except my wee was bright yellow (which was something which was just amusing especially when asked for a urine sample for something else and the doctor or nurse stood there looking at the pot in awe!)
So please take it and hopefully after a few months as it does take its time to get going, you might find the Cimzia is working better and how good would that be? And indeed how easy would that be? Trying it just has to be a win win situation whatever the eventual outcome doesn’t it? Best of luck.