Inflammatory bowel disease (IBD) is increasingly common, and results in significant morbidity. Traditional therapies include corticosteroids, aminosalicylates, thiopurines and methotrexate but in more recent years biologics have transformed the management of IBD. However, these agents come with a significant financial cost, making them unavailable for many patients worldwide. Therapeutic drug monitoring (TDM) is an important means to optimise clinical outcomes from pharmacotherapy. Recent studies have also focussed on the cost-effectiveness as an outcome of TDM. TDM of traditional therapies is principally mediated through improved disease control. Cost-savings from TDM of biologic therapies arises mainly from reduced pharmaceutical use with equitable clinical outcomes. This review considers the cost-effectiveness of TDM for IBD therapies, with a focus on recent research into biologic TDM.
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