I was on Cimzia for about 6 months. Before that I was on Humera. With both, i felt dramatically better with the first injection. After that, it quit working. I also had pneumonia several times but bio logics suppress your immune system so my thought is that it didn't cause it but I had it from immune system being lowered. I started the Cimzia once a month then my dr had me try 1/2 dose every 2 weeks. I couldn't tell a difference. I hope this helped and wish you luck even though this was 9 months late

I was the same. It only worked for a few months and then just stopped. No side-effects but short lived reprieve.