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From 20th October 2025, Patient Access messaging will be replaced by Accurx triage — available via our website and the NHS App (Mon–Fri, 08:00–18:30). [Click here for details ➡️]
Find out how azathioprine treats conditions that affect the immune system such as rheumatoid arthritis, Crohn's disease and ulcerative colitis, skin conditions such as lupus, and helps after an organ transplant, and how to take it.