The solution for injection is a clear to opalescent, colourless to yellow solution. The pH of the solution is approximately 4.7.
Each pre-filled pen contains 200 mg certolizumab pegol in one ml.
Certolizumab pegol is a recombinant, humanised antibody Fab' fragment against tumour necrosis factor alpha (TNFα) expressed in Escherichia coli and conjugated to polyethylene glycol (PEG).
Excipients/Inactive Ingredients: Sodium acetate, sodium chloride, water for injections.