Cited by 132Attention Deficit Hyperactivity DisorderPharmaceutical studies and practicesNeuroethics, Human Enhancement, Biomedical Innovations

Prescribing trends of attention-deficit hyperactivity disorder (ADHD) medications in UK primary care, 1995–2015

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Renoux, Christel, Shin, Ju‐Young, Dell'Aniello, Sophie, Fergusson, Emma, Suissa, Samy·2016·British Journal of Clinical Pharmacology

Abstract

AIM: The aim of the present study was to describe the prescription of medications for attention-deficit hyperactivity disorder (ADHD) in the UK between 1995 and 2015. METHODS: Using the Clinical Practice Research Datalink (CPRD), we defined a cohort of all patients aged 6-45 years, registered with a general practitioner between January 1995 and September 2015. All prescriptions of methylphenidate, dexamphetamine/lisdexamphetamine and atomoxetine were identified and annual prescription rates of ADHD were estimated using Poisson regression. RESULTS: Within a cohort of 7 432 735 patients, we identified 698 148 prescriptions of ADHD medications during 41 171 528 person-years of follow-up. Usage was relatively low until 2000, during which the prescription rate was 42.7 [95% confidence interval (CI) 20.9, 87.2] prescriptions per 10 000 persons, increasing to 394.4 (95% CI 296.7, 524.2) in 2015, corresponding to an almost 800% increase (rate ratio 8.87; 95% CI 7.10, 11.09). The increase was seen in all age groups and in both sexes but was steepest in boys aged 10-14 years. The prescription rate in males was almost five times that of females. Methylphenidate remained the most prescribed drug during the 20-year study period, representing 88.9% of all prescriptions in the 6-24-year-old group, and 63.5% of all prescriptions in adults (25-45 years of age). CONCLUSIONS: Prescription rates of ADHD medications have increased dramatically in the past two decades. This may be due, at least in part, to both an increase in the number of patients diagnosed with ADHD over time and a higher percentage of those patients treated with medication.

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  • B vitamins (B6, B12, folate) play critical roles in neurotransmitter synthesis, but their specific effects on ADHD in adults remain unclear.

    “In turn, B vitamins—including B6, B12, and folate—play critical roles in neurotransmitter synthesis, but their specific effects on ADHD in adults remain unclear [184].”

    From ADHD in Adulthood: Clinical Presentation, Comorbidities, and Treatment Perspectives (2025) · cites this paper as [184]

    The ADHD medications and Results sections discuss prescription drugs and prescribing trends, not nutrients. Searches for B6, B12, folate, neurotransmitter synthesis, and vitamin effects on adult ADHD found no passage addressing the claim. (LLM, conf=0.78)

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Authors
Renoux, C., Shin, J., Dell'Aniello, S., Fergusson, E., & Suissa, S.
Affiliations
  • Jewish General Hospital (CA)
  • Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research Jewish General Hospital Montréal, QC Canada
  • University of Oxford (GB)
Corresponding author
Renoux, Christel
Venue
British Journal of Clinical Pharmacology
Publisher
Wiley
Published
2016-06-09
Volume
82
Issue
3
Pages
858-868
ISSN
  • 0306-5251 (ISSN-L)
  • 1365-2125
OpenAlex
W2346040249
Cited by
132
References
34
Citations by year
2026: 12 · 2025: 14 · 2024: 5 · 2023: 11 · 2022: 15 · 2021: 18 · 2020: 28 · 2019: 7 · 2018: 10 · 2017: 11 · 2016: 1
FWCI
8.59
Type
journal article
Language
en
Open access
Locations
  • British Journal of Clinical Pharmacology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@McGill (McGill) (submittedVersion, cc-by)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pharmaceutical studies and practices
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroethics, Human Enhancement, Biomedical Innovations
Keywords
attention deficit hyperactivity disorder, ADHD medication, prescribing trends, methylphenidate, d-amphetamine, atomoxetine, prescription rates, primary care, sex differences in prescribing, age differences in prescribing, United Kingdom
MeSH terms
Adolescent, Adult, Central Nervous System Stimulants, Attention Deficit Disorder with Hyperactivity, Child, Drug Utilization, Female, United Kingdom, Humans, Male, Middle Aged, Practice Patterns, Physicians', Primary Health Care, Young Adult

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