Unlicensed use of metformin in children and adolescents in UK.

Hsia, Y; Dawoud, D; Sutcliffe, AG; Viner, RM; Kinra, S; Wong, IC; (2011) Unlicensed use of metformin in children and adolescents in UK. British journal of clinical pharmacology. ISSN 0306-5251 DOI: https://doi.org/10.1111/j.1365-2125.2011.04063.x

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What is already known about this subject • Metformin is licensed for type 2 diabetes mellitus (DM) treatment in the UK. • Evidence has shown the moderate efficacy of metformin treatment for PCOS and obesity. What this study adds • Metformin prescribing increased in children and adolescents between 2000 and 2010, in particular in girls aged 16-18 years. • PCOS and obesity were the main, but unlicensed, indications for metformin prescribing amongst female adolescents. ABSTRACT: AIMS Metformin is the most commonly prescribed oral anti-diabetic drug in young people. It is also prescribed for polycystic ovarian syndrome (PCOS) and obesity treatment in adults in an unlicensed fashion. Little is known as to the extent metformin has been used in young people. We investigated the use of metformin in children and adolescents aged 0-18 years in the UK. METHODS Population-based prescribing data from the UK IMS Disease Analyzer between January 2000 and December 2010. Results: A total of 2674 metformin prescriptions were issued to 337 patients (80% female) between 2000 and 2010. The prevalence of metformin prescribing increased from 0.03 per 1000 person-years (95% confidence interval (CI) 0.02, 0.05) to 0.16 per 1000 person-years (95% CI 0.12, 0.20) (p = 0.001). There was a steady increase in metformin prescribing in girls aged 16-18. There were 290 metformin treated patients (81% female; n = 235) who had at least one diagnosis of diabetes, PCOS or obesity. Among these patients, PCOS was the most common indication for metformin prescribing in girls (n = 120) followed by diabetes. There were 22 patients (7.6%) who received metformin for obesity treatment only. Conclusion Prescribing of metformin increased between 2000 and 2010, in particular amongst girls aged 16-18. The main indication for metformin prescribing was PCOS.. At present, metformin is not licensed for PCOS and obesity treatment in adults or children?. As there is a steady increase in the prescribing of metformin in young people, further studies are required to investigate the efficacy and safety of these prescriptions.

Item Type: Article
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Non-Communicable Disease Epidemiology
Research Centre: Centre for Global Non-Communicable Diseases (NCDs)
PubMed ID: 21762204
Web of Science ID: 297790200016
URI: http://researchonline.lshtm.ac.uk/id/eprint/386


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