You are now leaving Versus Arthritis. Click the link to continue to http://www.nhs.uk/medicine-guides/pages/MedicineOverview.aspx?condition=Rheumatoid%20arthritis&medicine=Certolizumab%20pegol&preparationCertolizumab%20pegol%20200mg/1ml%20solution%20for%20injection%20pre-filled%20syringes.