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From Monday 27th July 2026, our online consultation service (Klinik) will be available Monday to Friday, 8:00am to 6:30pm. This change has been made to align with the new NHS contractual core opening hours.
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.