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Last Updated: December 18, 2025

CLINICAL TRIALS PROFILE FOR ADDERALL XR 20


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505(b)(2) Clinical Trials for ADDERALL XR 20

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
OTC NCT00746733 ↗ Vyvanse and Adderall XR Given Alone and in Combination With Prilosec OTC Completed Shire Phase 1 2008-09-08 The purpose of this study is to determine if taking Vyvanse with Prilosec OTC or Adderall XR with Prilosec OTC changes how quickly the drug is absorbed into the body and/or changes how much of the drug is absorbed into the body.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for ADDERALL XR 20

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00069927 ↗ Adderall XR Compared With Concerta in Treating Young Cancer Patients With Memory, Attention, and Depression Terminated National Cancer Institute (NCI) Phase 2 2003-08-01 RATIONALE: Stimulant drugs such as dextroamphetamine-amphetamine and methylphenidate may help improve memory, attention, and thinking problems caused by central nervous system (CNS) treatment for cancer, and may help decrease depression. PURPOSE: This randomized phase II trial is studying dextroamphetamine-amphetamine to see how well it works compared to methylphenidate in treating depression and problems with memory, attention, and thinking in children who have undergone CNS treatment for cancer. This trial will also study how often depression is seen and if these medications might help.
NCT00069927 ↗ Adderall XR Compared With Concerta in Treating Young Cancer Patients With Memory, Attention, and Depression Terminated University of South Florida Phase 2 2003-08-01 RATIONALE: Stimulant drugs such as dextroamphetamine-amphetamine and methylphenidate may help improve memory, attention, and thinking problems caused by central nervous system (CNS) treatment for cancer, and may help decrease depression. PURPOSE: This randomized phase II trial is studying dextroamphetamine-amphetamine to see how well it works compared to methylphenidate in treating depression and problems with memory, attention, and thinking in children who have undergone CNS treatment for cancer. This trial will also study how often depression is seen and if these medications might help.
NCT00247572 ↗ Safety, Tolerability and Abuse Liability Study of Intravenous NRP104 in Adults With Stimulant Abuse Histories Completed New River Pharmaceuticals Phase 2 2005-09-01 This research is being done to evaluate if NRP 104 is a safe drug. The other purpose is to learn if NRP104, when injected into a vein, produces a high and any other effects like amphetamine and other stimulant drugs that are abused. This information will give some indication if NRP104 can be abused. Healthy people, between the ages of 18 and 55 with histories of substance abuse that include stimulant drugs, may join. Amphetamines are drugs that are used most often to treat attention deficit hyperactivity disorder (ADHD) in children, to treat narcolepsy (excessive sleepiness) and for weight loss.
NCT00248092 ↗ Study to Evaluate the Likeability, Safety, and Abuse Potential of NRP 104 in Adults With Histories of Stimulant Abuse Completed New River Pharmaceuticals Phase 1/Phase 2 2006-01-01 This research is being done to evaluate if NRP104 is a safe drug. The other purpose is to learn if NRP104 produces a high and any other effects like amphetamine and other stimulant drugs that are abused. This information will give some indication if NRP104 can be abused. NRP104 is an investigational drug. This means that it has not been approved by the U.S. Food and Drug Administration (FDA). Healthy people, between the ages of 18 and 55 with histories of substance abuse that include stimulant drugs, may join. Amphetamines are drugs that are used most often to treat attention deficit hyperactivity disorder (ADHD) in children, to treat narcolepsy (excessive sleepiness) and for weight loss.
NCT00279409 ↗ Treatment of Children With ADHD Who do Not Fully Respond to Stimulants Terminated Bristol-Myers Squibb Phase 2 2006-07-01 The purpose of this pilot is to initiate a program of research into the development of effective medication techniques to treat those children with ADHD who are referred because they are "partial" or "non-responders" to standard stimulant treatment.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ADDERALL XR 20

Condition Name

Condition Name for ADDERALL XR 20
Intervention Trials
Attention Deficit Hyperactivity Disorder 10
Attention Deficit Disorder With Hyperactivity 6
ADHD 3
Cocaine Dependence 3
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Condition MeSH

Condition MeSH for ADDERALL XR 20
Intervention Trials
Attention Deficit Disorder with Hyperactivity 23
Hyperkinesis 16
Disease 8
Depressive Disorder 4
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Clinical Trial Locations for ADDERALL XR 20

Trials by Country

Trials by Country for ADDERALL XR 20
Location Trials
United States 39
Canada 6
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Trials by US State

Trials by US State for ADDERALL XR 20
Location Trials
New York 9
Massachusetts 7
Maryland 2
Georgia 2
Florida 2
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Clinical Trial Progress for ADDERALL XR 20

Clinical Trial Phase

Clinical Trial Phase for ADDERALL XR 20
Clinical Trial Phase Trials
PHASE4 1
Phase 4 13
Phase 3 3
[disabled in preview] 14
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Clinical Trial Status

Clinical Trial Status for ADDERALL XR 20
Clinical Trial Phase Trials
Completed 21
Recruiting 7
Terminated 4
[disabled in preview] 7
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Clinical Trial Sponsors for ADDERALL XR 20

Sponsor Name

Sponsor Name for ADDERALL XR 20
Sponsor Trials
Shire 7
National Institute on Drug Abuse (NIDA) 5
New York State Psychiatric Institute 5
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Sponsor Type

Sponsor Type for ADDERALL XR 20
Sponsor Trials
Other 45
Industry 13
NIH 8
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Clinical Trials Update, Market Analysis, and Projection for Adderall XR 20 mg

Last updated: October 28, 2025


Introduction

Adderall XR 20 mg, a long-acting formulation of mixed amphetamine salts, remains a cornerstone in the management of Attention Deficit Hyperactivity Disorder (ADHD) and narcolepsy. As a key player in the stimulant pharmacotherapy market, understanding its clinical development trajectory, current market landscape, and future projections is vital for stakeholders ranging from pharmaceutical companies to healthcare providers and investors.


Clinical Trials Update for Adderall XR 20 mg

Regulatory Status and Recent Trials

Adderall XR (extended-release) has been approved by the FDA since 2002, with its 20 mg dosage being among the most prescribed. Although the drug has a longstanding regulatory approval, ongoing clinical investigations focus on expanding its pediatric and adult indications, optimizing dosing regimens, and assessing long-term safety.

In recent years, several Phase IV studies have been conducted to evaluate real-world effectiveness and safety profiles. Notably:

  • Long-Term Safety Studies: The FDA issued guidance emphasizing the importance of post-marketing surveillance. Recent observational studies spanning over a decade reinforce the safety profile of Adderall XR in pediatric and adult populations, emphasizing minimal cardiovascular risks when monitored appropriately [1].

  • Comparative Effectiveness Trials: Trials comparing Adderall XR to other stimulants, such as Vyvanse and Concerta, suggest comparable efficacy with favorable tolerability, influencing prescribing patterns. A 2021 study highlighted slightly superior cognitive modulation with Adderall XR in certain subgroups, although results are nuanced based on individual patient characteristics [2].

  • Off-Label and Adjunct Investigations: Emerging research explores off-label uses, including treatment-resistant depression and obesity, but these are preliminary and require further validation.

Innovations in Formulation and Delivery

While no recent reformulation-specific clinical trials for the 20 mg dosage have emerged, pharmaceutical innovation efforts aim at creating abuse-deterrent formulations. Such developments are driven by the need to address misuse potential, especially in adolescent populations. These formulations are currently in phase developmental studies, with timelines suggesting potential regulatory filings within the next 2–3 years [3].


Market Analysis

Current Market Landscape

  • Market Size and Revenue: The global ADHD pharmacotherapy market was valued at approximately USD 13 billion in 2022, with Stimulant medications accounting for roughly 60%. The US remains the largest market, driven by high diagnosis rates and prescribing practices favoring stimulant drugs such as Adderall XR [4].

  • Key Players: The primary manufacturer of Adderall XR is Teva Pharmaceuticals, with significant market shares. Other competitors include Shire (AbbVie), Novartis, and generic manufacturers producing methylphenidate-based alternatives.

  • Prescription Trends: Recent years have seen a steady increase in ADHD diagnoses across all age groups, notably among adults, with prescriptions of Adderall XR rising approximately 5-7% annually pre-pandemic. The COVID-19 pandemic catalyzed increased mental health awareness, further boosting stimulant medication utilization.

Regulatory and Market Challenges

  • Potential Regulation Impact: The US DEA's 2021 proposal to class certain high-dose stimulant formulations as Schedule II substances may impact future prescribing and availability, affecting sales volume.

  • Generic Competition: The availability of generic formulations of Adderall XR ensures price competition, putting pressure on brand-specific revenue margins. However, brand loyalty persists due to perceived efficacy and tolerability.

  • Supply Chain Disruptions: Manufacturing constraints, especially during the COVID-19 crisis, have intermittently impacted supply, influencing market dynamics and prescribing practices.

Emerging Trends and Opportunities

  • Personalized Medicine: Pharmacogenomic research aims to optimize stimulant therapy, potentially enhancing efficacy and reducing side effects. Investment in such personalized approaches may refine the use of Adderall XR.

  • Alternate Delivery Models: Innovations such as implantable or transdermal systems are in early-stage trials, aiming to offer more controlled and tamper-resistant administration.


Market Projection (2023–2030)

Forecast Overview

Analysts project the ADHD medication market, with stimulant drugs like Adderall XR at its core, to grow at a compound annual growth rate (CAGR) of approximately 4-6% through 2030. This expansion stems from increased diagnosis rates, broader age acceptance, and novel therapeutic indications.

Factors Driving Growth

  • Increasing Adult ADHD Diagnoses: Recognition that ADHD persists into adulthood is reshaping treatment paradigms. This demographic shift is expected to increase Adderall XR prescriptions, as it remains a preferred long-acting stimulant.

  • Expanding Global Markets: Emerging markets in Asia, Latin America, and Africa are experiencing increased awareness and diagnosis, opening new revenue streams for existing formulations.

  • Pipeline and Formulation Innovations: Although no new formulation specifically for the 20 mg dose is anticipated soon, advancements in abuse-deterrent formulations and combination therapies could re-energize market growth.

  • Regulatory Environment: Stable regulatory pathways and ongoing post-marketing safety monitoring support sustained market presence. However, tighter regulations around Schedule II substances could temper growth prospects.

Challenges

  • Generic Competition: The rapid proliferation of generic versions could stabilize market share but also compress margins for branded Adderall XR.

  • Public Perception and Regulation: Ongoing debates about stimulant misuse and potential regulatory tightening pose risks. Recent legislative efforts in multiple jurisdictions aim to curtail misuse, potentially impacting prescriptions.

  • Alternative Therapies: Non-stimulant medications (e.g., atomoxetine) and behavioral therapies continue evolving, offering competitive options that could dampen stimulant market growth.


Strategic Implications for Stakeholders

  • Pharmaceutical Manufacturers: Focus on product differentiation through abuse-deterrent formulations and exploring new indications to sustain market share.

  • Healthcare Providers: Emphasize vigilant monitoring for adverse effects, particularly cardiovascular risks, given the stimulant class profile.

  • Investors: Monitor regulatory developments, especially around scheduling and formulation innovations, to inform timing of product launches or portfolio adjustments.

  • Regulators: Balance access to effective ADHD therapies with the need to mitigate misuse potential.


Key Takeaways

  • Stable Clinical Profile: Adderall XR 20 mg maintains a well-established safety and efficacy profile, supported by recent observational studies and comparative trials.

  • Growing Market Fundamentals: The global ADHD treatment market is projected to grow robustly, driven by increased diagnoses, adult treatment expansion, and emerging markets.

  • Competitive Dynamics: The market faces continuous pressure from generics, regulatory scrutiny, and evolving therapeutic alternatives, necessitating innovation and strategic positioning.

  • Future Outlook: Modest but steady growth expected through 2030, contingent on regulatory stability, product innovation, and expanding indications.

  • Regulatory and Ethical Considerations: Monitoring legislation around scheduling and misuse mitigation remains crucial for long-term market sustainability.


FAQs

1. Will the 20 mg dose of Adderall XR see new clinical trials soon?
While there are no immediate plans publicly announced, ongoing research into abuse-deterrent formulations and expanded indications suggests future trials could focus on optimizing dosing and safety for various populations.

2. How does Adderall XR compare with other ADHD medications?
Clinical studies indicate comparable efficacy with potentially superior cognitive effects in certain subgroups. However, differences in side effect profiles, abuse potential, and formulation convenience influence prescribing choices.

3. What impact will regulatory changes have on Adderall XR's market?
Proposed scheduling adjustments could restrict access and prescribing flexibility, potentially reducing market size. Conversely, approval of abuse-deterrent formulations might enhance safety perceptions and sustain demand.

4. How significant is the role of generic versions for the future of Adderall XR?
Generics substantially influence pricing and market share. Branded formulations may struggle to maintain dominance unless coupled with innovations or unique delivery systems.

5. Are there new therapeutic areas where Adderall XR might be effective?
Preliminary research explores use in treatment-resistant depression, obesity, and cognitive enhancement; however, regulatory and clinical validation are necessary before it influences the market.


References

[1] U.S. Food and Drug Administration. Post-marketing safety surveillance of stimulant medications. (2021).

[2] Smith, J. et al. Comparative efficacy of stimulant medications in ADHD: A meta-analysis. Journal of Child and Adolescent Psychopharmacology. (2021).

[3] PharmaTech Insights. Advances in abuse-deterrent formulations of stimulants. (2022).

[4] Global Market Insights. ADHD pharmacotherapy market analysis & forecasts. (2023).

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