Rituximab is a biological therapy. It removes B-cells, which can produce harmful autoantibodies.
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It’s available for people with rheumatoid arthritis, lupus, vasculitis and sometimes dermatomyositis.
It’s usually given as two infusions, 2 weeks apart.
A small proportion of people experience fever, wheeziness, a rash or fall in blood pressure. It can also make you more likely to develop infections.