Certolizumab pegol is an anti-TNF (anti-tumour necrosis factor) drug. It blocks the action of TNF protein and so reduces inflammation.
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It’s available for people with rheumatoid arthritis.
It’s usually given as a 200 mg injection every 2 weeks.
The most common side-effects are reactions at the injection site, such as redness, swelling or pain. It can also make you more likely to develop infections.