Cited by 225Attention Deficit Hyperactivity DisorderSubstance Abuse Treatment and OutcomesNeuroethics, Human Enhancement, Biomedical Innovations

Stimulant ADHD medication and risk for substance abuse

Open access
Chang, Zheng, Lichtenstein, Paul, Halldner, Linda, D'Onofrio, Brian, Serlachius, Eva, Fazel, Seena, Långström, Niklas, Larsson, Henrik·2014·Journal of Child Psychology and Psychiatry

Abstract

BACKGROUND: There are persistent concerns of long-term effects of stimulant ADHD medication on the development of substance abuse. METHODS: Using Swedish national registers, we studied all individuals born between 1960 and 1998 and diagnosed with ADHD (26,249 men and 12,504 women). We investigated the association between stimulant ADHD medication in 2006 and substance abuse during 2009. Substance abuse was indexed by substance-related death, crime, or hospital visits. RESULTS: ADHD medication was not associated with increased rate of substance abuse. Actually, the rate during 2009 was 31% lower among those prescribed ADHD medication in 2006, even after controlling for medication in 2009 and other covariates (hazard ratio: 0.69; 95% confidence interval: 0.57-0.84). Also, the longer the duration of medication, the lower the rate of substance abuse. Similar risk reductions were suggested among children and when investigating the association between stimulant ADHD medication and concomitant short-term abuse. CONCLUSIONS: We found no indication of increased risks of substance abuse among individuals prescribed stimulant ADHD medication; if anything, the data suggested a long-term protective effect on substance abuse. Although stimulant ADHD medication does not seem to increase the risk for substance abuse, clinicians should remain alert to the potential problem of stimulant misuse and diversion in ADHD patients.

Integrity signals

Registry

Crossref · 10.1111/jcpp.12164

Cites

40 of 40 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

4 of 18 cited sources checked · 2 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    ADHD itself is associated with an increased risk for substance abuse.

    “especially because ADHD by itself is associated with increased risk for substance abuse (Elkins, McGue, & Iacono, 2007; Klein et al., 2012).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Elkins, McGue, & Iacono, 2007 source
    • cites Klein et al., 2012 source

      The Results (Lifetime Functioning; page unavailable) report more lifetime substance use disorders among participants with childhood ADHD than among comparisons. But the Discussion (page unavailable) says conduct problems mediate that relationship and that ADHD does not predict substance disorders when conduct problems are controlled for. The increased risk is supported; “ADHD by itself” is not. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Premisecitation

    ADHD medication is associated with reductions in criminality while under treatment.

    “This is supported by a recent large study indicating significant associations between ADHD medication and reductions in criminality while under treatment (Lichtenstein et al., 2012).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Lichtenstein et al., 2012 source
  • Findingown data

    Among individuals with ADHD, stimulant ADHD medication at Jan 1 2006 was not associated with an increased rate of substance abuse during 2009.

    “ADHD medication was not associated with increased rate of substance abuse.”
    • Also stated in: § Results · plain
      “Those on medication did not have increased rates of substance abuse during follow-up”
    • Also stated in: § Discussion · hedged
      “found no indication of increased substance abuse at follow-up”
    Quote in the paperSubstantial claim
  • Findingown data

    After controlling for age, sex, and medication in 2009, the substance abuse rate during 2009 was 48% lower among individuals with ADHD prescribed stimulant ADHD medication in 2006 than among those not prescribed (HR=0.52, 95% CI 0.42-0.66).

    “After controlling for age, sex and medication in 2009, the substance abuse rate was decreased 48% (Hazard Ratio [HR]=0.52, 95% confidence interval [95% CI]: 0.42–0.66).”
    Quote in the paperSubstantial claim
  • Findingown data

    The long-term association between stimulant ADHD medication and substance abuse remained when controlling for other common psychotropic drugs.

    “Further, the long-term association remained when we controlled for other common psychotropic drugs.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. 8
  • The quote only partly states this claim. 1
  • May combine two claims. 8
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Behavior sensitization, an increased response to an addictive substance after repeated exposure, has been observed in humans.

    “Behavior sensitization – a phenomenon of increased response to an addictive substance after repeated exposure - has been observed in humans (Boileau et al., 2008)”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Boileau et al., 2008 source

      The Results and discussion passages concern VMAT2 binding and dopamine measures in human methamphetamine users, not an increased behavioral response after repeated exposure. A search for behavioral sensitization found only a reference to behaviorally sensitizing doses in an animal study; our copy does not establish that behavioral sensitization has been observed in humans. Page numbers were not available in our copy. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The findings are congruent with previous studies.

    “our findings are congruent with previous studies (Wilens, et al., 2003; Winters et al., 2011).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Wilens, et al., 2003 source
    • cites Winters et al., 2011 source
  • The quote only partly states this claim.

    Findingown data

    The rate of substance abuse during 2009 was 31% lower among individuals with ADHD prescribed stimulant ADHD medication in 2006 than among those not prescribed, after controlling for age, sex, medication in 2009, socioeconomic status, prior substance abuse, psychiatric disorder, and criminal convictions before 2006 (HR=0.69, 95% CI 0.57-0.84).

    “Actually, the rate during 2009 was 31% lower among those prescribed ADHD medication in 2006, even after controlling for medication in 2009 and other covariates (hazard ratio: 0.69; 95% confidence interval: 0.57–0.84).”
    • Also stated in: § Results · plain
      “The association remained decreased at 31% when we controlled for other potential confounders (SES, substance abuse, psychiatric disorder, and criminal convictions before 2006; HR=0.69, 95% CI: 0.57–0.84).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The study found no indication of long-term increase in substance abuse among youth, and found a decrease in abuse rate in youth and adults.

    “but we found no indication of long-term increase in substance abuse in this group. Rather, consistent with a previous meta-analysis, we found a decrease in the abuse rate in youth (Wilens, et al., 2003), and also a decrease in adults.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Wilens, et al., 2003 source
  • May combine two claims.

    Findingown data

    Similar results were evident regardless of the class of substance abused and irrespective of the order of change in medication status.

    “Similar results were evident regardless of the class of substance abused (eTable 3), and irrespective of the order of change in medication status (eTable 4).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The inverse association between stimulant ADHD medication and substance abuse was observed across different cohorts and exposures, including separate analyses of males and females, inclusion of non-stimulant ADHD medication, exclusion of never-treated individuals, and among those with a drug abuse diagnosis at baseline.

    “Decrease in substance abuse rates associated with ADHD medication were observed also when using different cohorts or exposures, that is, when we analyzed males and females separately (eTable 1), included non-stimulant ADHD medication, excluded individuals who were never treated, and did separate analyses for those with a drug abuse diagnosis already at baseline (eTable 2).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    In a cohort of children with ADHD aged 15 years or younger on Jan 1 2006, stimulant ADHD medication was not associated with an increased rate of substance abuse; the negative association was stronger than in the overall cohort (HR=0.38, 95% CI 0.23-0.64).

    “We performed analyses on a cohort of 17,328 children with ADHD who were 15 years old or younger 1/1/2006. There was no indication that stimulant ADHD medication increased the rate of abuse in this cohort but rather, there appeared to be an even stronger negative association (HR=0.38, 95% CI: 0.23–0.64; Table 2).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Study design and conductown data

    In both males and females, those taking stimulant medication were younger and less likely to be employed or married than non-users.

    “In both males and females, those taking stimulant medication were younger at start of follow-up, and less likely to be employed or married compared to non-users; these differences may be explained overall by stimulant users being younger than non-users.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationown data

    The findings are based on Swedish population data, and generalizations to other cultures or countries should be made with caution.

    “Second, the findings were based on Swedish population data, and generalizations to other cultures/countries should be made with caution.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable).

    Interpretationnone given

    Unmeasured confounders can never be fully ruled out in this research design.

    “Nevertheless, unmeasured confounders can never be fully ruled out in this research design.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data

    The results are most congruent with the hypothesis that longer stimulant ADHD medication use lowers substance abuse risk, partly through less chance of short-term substance-related and psychiatric problems.

    “Together these results are most congruent with the first hypothesis; that is, the longer an individual takes the medication, the lower the risk for substance abuse, to some extent due to less chance of short-term substance-related and psychiatric problems.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    The study analyzed a subsample of patients who had been medicated at least once during follow-up to rule out confounding by unmeasured conditions.

    “Second, some patients may have been not medicated because they were different (e.g., with comorbid conditions not suitable for stimulant medication) from those medicated; therefore, we analyzed a subsample of patients who had been on medication at least once during follow-up to rule out the potential confounding effect of such unmeasured conditions.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    The analysis included only unplanned hospital visits to avoid misclassifying planned treatments as events.

    “We included only unplanned hospital visits to avoid misclassifying planned treatments (e.g., regular hospital visits in treatment programs) as events.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    The study performed sensitivity analyses with SSRIs to address possible non-specific beneficial effects of being prescribed medication.

    “We also performed sensitivity analyses with individuals who were prescribed selective serotonin reuptake inhibitors (SSRIs; instead of ADHD medication). This analysis was one approach to deal with the possible non-specific beneficial effects of being prescribed medication, such as regular reviews by healthcare staff and links to other medical and social services.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductown data

    The study controlled for age, sex, medication in 2009, and other covariates including socioeconomic status, prior substance abuse, psychiatric disorder, and criminal convictions before 2006.

    “We also controlled for previous substance abuse, other psychiatric diagnosis (other than substance abuse and ADHD), criminal conviction (other than for substance abuse), and psychotropic medications other than ADHD medication.”
    • Also stated in: § Results · plain
      “The association remained decreased at 31% when we controlled for other potential confounders (SES, substance abuse, psychiatric disorder, and criminal convictions before 2006; HR=0.69, 95% CI: 0.57–0.84).”
    Quote in the paperSubstantial claim
15 of 15
  • The paper relies on this without support.

    Prior studies on ADHD medication and substance use have had limited sample sizes.

    “Although many studies seem to find no or possibly protective effects of ADHD medication on substance use (Barkley, Fischer, Smallish, & Fletcher, 2003; Biederman et al., 2008; Faraone & Wilens, 2007; Mannuzza, et al., 2008; Wilens, Faraone, Biederman, & Gunawardene, 2003), they have had limited sample sizes and data are as yet inconclusive.”
  • The paper relies on this without support.

    The Swedish national registers used in the study provide complete and accurate coverage of ADHD diagnoses, stimulant prescriptions, and substance abuse outcomes.

    “The National Patient Register (NPR) has nationwide coverage for psychiatric in-patient care and information on psychiatric out-patient visits to specialist physicians (not general practitioners) since 2001 with diagnoses based on the International Classification of Diseases (ICD)(Organization, 1992).”
    “We also used the Prescribed Drug Register, which includes information on all prescribed medical drugs since July 2005 (Wettermark et al., 2007).”
2 of 2

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The study extends prior Swedish findings of lower substance-related problem risk with stimulant medication by showing within-individual links to both lower concurrent and lower long-term event risk.

    “They extend a finding of associations between stimulant medication and lower risk of substance-related problems in Sweden by demonstrating within-individual associations with not only lower concurrent risk but also lower long-term risk of substance-related events (19).”

    From ADHD Medication and Substance-Related Problems (2017) · cites this paper as [19]

    The Results report a within-individual association between stimulant medication and lower concurrent substance-abuse rates in the Swedish cohort. The Discussion reports a lower long-term risk association over four years, but explicitly says a within-individual analysis was not possible for the long-term outcome. Thus, the claim incorrectly describes the long-term association as within-individual. (LLM, conf=0.91)

    Experimental — accuracy not yet measured
  • There is growing evidence that initiation of ADHD stimulant therapy in secondary school or later may represent a sensitive developmental period that deserves greater clinical and research attention.

    “There is growing evidence that initiation of ADHD stimulant therapy in secondary school or later may represent a sensitive developmental period that deserves greater clinical and research attention.26,29,30”

    From Is Age of Onset and Duration of Stimulant Therapy for ADHD Associated with Cocaine, Methamphetamine, and Prescription Stimulant Misuse? (2024) · cites this paper as [26]

    The Introduction (page unavailable) reports a proposed sensitive developmental period for youths using stimulant ADHD medication and calls for more evidence. It does not identify initiation in secondary school or later as that period. The Discussion (page unavailable) also reports no indication of increased long-term substance abuse among youths, so the paper does not establish the cited claim about later initiation. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Stimulant use in childhood has neutral or protective effects on subsequent drug and alcohol use disorders.

    “neutral or protective effects on sub sequent drug and alcohol use disorders 172-175 .”

    From Attention-deficit/hyperactivity disorder (2015) · cites this paper as [175]

    The Discussion reports no increased substance-abuse rate among medicated youth and a decrease over the study’s four-year follow-up. But it describes observational associations, not established effects, and its recorded outcomes primarily capture severe substance abuse rather than drug and alcohol use disorders generally. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Findings from national registry studies indicate that the use of medication, particularly stimulants, might have protective effects on substance abuse, suicidal and delinquent behaviour.

    “might have protective effects on substance abuse, suicidal and delinquent behaviour 175,214,232,233 .”

    From Attention-deficit/hyperactivity disorder (2015) · cites this paper as [175]

    The Results and Discussion report an association between stimulant ADHD medication and lower rates of substance abuse in Swedish registry data. The Introduction mentions a separate study reporting reduced criminality during treatment, but this paper does not report a protective association for suicidal behaviour. Its own criminal-conviction data are used chiefly to measure substance-related outcomes, not delinquent behaviour generally. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Central stimulants reduce behaviors related to emotional impulsivity and instability in ADHD such as suicide rate, drug use and criminal behavior, possibly indicating a specific effect on emotional dysregulation in ADHD.

    “Interestingly, central stimulants also reduce behaviors related to emotional impulsivity and instability in ADHD such as suicide rate (Chen et al., 2014), drug use (Chang et al., 2014) and criminal behavior (Lichtenstein et al., 2012)—possibly indicating a specific effect on emotional dysregulation in ADHD.”

    From Top-Down Dysregulation—From ADHD to Emotional Instability (2016) · cites this paper as Chang et al., 2014

    The Chang et al. citation is attached to drug use, not to the sentence’s separate citations for suicide or criminal behavior. The Discussion reports an association between stimulant ADHD treatment and lower rates of substance abuse, but does not establish that stimulants cause the reduction. It also cautions that the recorded outcomes primarily concern severe substance abuse. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. Official Statistics of Sweden, 2011, Kriminalstatistik 2010 [Criminal statistics]
  2. Swedish National Institute of Public Health, 2008, Alcohol Statistics 2007
  3. WHO., 1992, ICD‐10 Classifications of Mental and Behavioural Disorder: Clinical Descriptions and Diagnostic Guidelines

Cited by

Sorted by citations

Authors
Chang, Z., Lichtenstein, P., Halldner, L., D'Onofrio, B., Serlachius, E., Fazel, S., Långström, N., & Larsson, H.
Affiliations
  • Karolinska Institutet (SE)
  • Indiana University Bloomington (US)
  • University of Oxford (GB)
Corresponding author
Chang, Zheng
Venue
Journal of Child Psychology and Psychiatry
Publisher
Wiley
Published
2013-10-25
Volume
55
Issue
8
Pages
878-885
ISSN
  • 0021-9630 (ISSN-L)
  • 1469-7610
OpenAlex
W2042929391
Cited by
225
References
40
Citations by year
2026: 17 · 2025: 19 · 2024: 25 · 2023: 24 · 2022: 21 · 2021: 14 · 2020: 26 · 2019: 18 · 2018: 14 · 2017: 16 · 2016: 11 · 2015: 16 · 2014: 4
FWCI
7.31
Type
journal article
Language
en
Open access
Locations
  • Journal of Child Psychology and Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Swedish Research Council
  • Swedish Council for Working Life and Social Research
  • Swedish Prison and Probation Services
  • National Institute of Child Health and Human Development (HD061817)
  • Wellcome Trust (095806)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroethics, Human Enhancement, Biomedical Innovations
Keywords
attention deficit hyperactivity disorder, stimulant medication, substance abuse, crime, hospital visits, duration of drug use, children, stimulant abuse, drug diversion
MeSH terms
Adolescent, Adult, Central Nervous System Stimulants, Attention Deficit Disorder with Hyperactivity, Child, Female, Humans, Male, Middle Aged, Registries, Risk Factors, Sweden, Substance-Related Disorders, Young Adult

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