I took Cimzia for 10 months with no bad side effects except sore joints. My big problem is bleeding from ulcers in The intestine. For about 4 months I thought the bleeding had stopped and then I hemoridged. I had a colonoscopy and it showed numerous ulcers. Two years ago I only had one and now lots. doc said to stop the med and has now put me on Entyvio. I am still on the loading dose so I will see how it goes in the following weeks.