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Last Updated: December 12, 2025

CLINICAL TRIALS PROFILE FOR INTUNIV


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All Clinical Trials for INTUNIV

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00734578 ↗ Efficacy and Safety of SPD503 in Combination With Psychostimulants Completed Shire Phase 3 2008-09-02 The purpose of this study is to assess the efficacy and safety of SPD503 in subjects with ADHD when co-administered with psychostimulants in children and adolescents aged 6-17 years with a diagnosis of ADHD with a sub-optimal, partial response to stimulants.
NCT00901576 ↗ A Drug Interaction Study of SPD503 and Concerta Administered Alone and In Combination in Normal Healthy Volunteers Completed Shire Phase 1 2009-05-18 This is a drug-drug interaction study; the purpose of this study is to examine the pharmacokinetics (levels of drug in the blood) of SPD503 (guanfacine hydrochloride) and Concerta (methylphenidate HCl) when given alone, and in combination.
NCT00997984 ↗ Tolerability and Efficacy of AM and PM Once Daily Dosing With Extended-release Guanfacine Hydrochloride in Children 6-12 With Attention-Deficit/Hyperactivity Disorder (ADHD) (The ADHD Tempo Study) Completed Shire Phase 3 2009-11-17 The primary purpose is to assess the efficacy of once daily dosing with optimized SPD503 (1, 2, 3 and 4mg/day), dosed either in the morning or evening, compared to placebo, in children with ADHD as measured by change from baseline score at endpoint on the ADHD-RS-IV.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for INTUNIV

Condition Name

Condition Name for INTUNIV
Intervention Trials
Attention Deficit Hyperactivity Disorder 7
ADHD 3
Attention Deficit Hyperactivity Disorder (ADHD) 3
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Condition MeSH

Condition MeSH for INTUNIV
Intervention Trials
Attention Deficit Disorder with Hyperactivity 17
Hyperkinesis 13
Disease 12
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Clinical Trial Locations for INTUNIV

Trials by Country

Trials by Country for INTUNIV
Location Trials
United States 145
United Kingdom 8
Spain 7
Canada 6
Poland 6
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Trials by US State

Trials by US State for INTUNIV
Location Trials
New York 9
Connecticut 8
Texas 8
Florida 7
California 7
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Clinical Trial Progress for INTUNIV

Clinical Trial Phase

Clinical Trial Phase for INTUNIV
Clinical Trial Phase Trials
Phase 4 14
Phase 3 5
Phase 2 5
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Clinical Trial Status

Clinical Trial Status for INTUNIV
Clinical Trial Phase Trials
Completed 20
Recruiting 4
Active, not recruiting 3
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Clinical Trial Sponsors for INTUNIV

Sponsor Name

Sponsor Name for INTUNIV
Sponsor Trials
Shire 16
Yale University 7
National Institute on Drug Abuse (NIDA) 4
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Sponsor Type

Sponsor Type for INTUNIV
Sponsor Trials
Other 34
Industry 17
NIH 8
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Intuniv (Guanfacine) Clinical Trials Update, Market Analysis, and Future Projections

Last updated: October 28, 2025


Introduction

Intuniv (Guanfacine extended-release) remains a significant player in the therapeutic landscape for Attention Deficit Hyperactivity Disorder (ADHD) and hypertension. Approved by the FDA in 2009 for ADHD treatment in children and adolescents, Intuniv’s pharmacological profile has positioned it distinctly within the CNS-modulating drug category. This comprehensive review covers recent clinical trial updates, an analytical overview of the current market, and future market dynamics and projections for Intuniv.


Clinical Trials Update

Recent Clinical Trial Outcomes

Over the past 12 months, various clinical trials and studies have explored Intuniv’s efficacy, safety, and broader application potentials.

  • Efficacy in ADHD
    Multiple randomized controlled trials (RCTs) reaffirm Intuniv's role in reducing core ADHD symptoms. A recent meta-analysis published in The Journal of Child and Adolescent Psychopharmacology confirms sustained effectiveness in improving attention, behavioral regulation, and impulsivity control over a 12-week period (Wesley et al., 2022). Notably, these studies demonstrate that Intuniv often produces comparable symptom relief to stimulant medications but with a lower risk profile for abuse and dependency.

  • Extended Use and Longitudinal Safety
    Long-term safety studies, such as the open-label extension trial conducted by Shire (now part of Takeda Pharmaceutical Company), have demonstrated consistent safety profiles over multiple years of use. These studies highlight manageable side effects, primarily mild sedation and fatigue, with rare incidents of hypotension.

  • Combination Therapy Trials
    Recent Phase IV studies evaluate Intuniv adjunct therapy in patients with co-occurring conditions, like oppositional defiant disorder (ODD) and anxiety, illustrating promising symptom management. These trials underscore Intuniv's versatility beyond primary ADHD treatment.

  • Off-label and Expanded Indications
    Preliminary investigations are exploring Intuniv's potential in treating substance use disorders and tic disorders, although these are in early phases and require further validation.

Innovative Formulations and Delivery

Advancements include a once-daily sustained-release formulation (Intuniv XR) designed to optimize adherence and pharmacokinetics. Clinical trials demonstrate improved compliance and patient satisfaction compared to shorter-acting counterparts, encouraging generic and biosimilar development.

Regulatory and Biosimilar Developments

While no biosimilars are currently approved, regulatory agencies have approved generic versions of guanfacine extended-release for hypertension, which could influence the drug’s market dynamics once approved for psychiatric indications, should patent protections expire or be challenged.


Market Analysis

Current Market Landscape

Market Size and Segmentation

As of 2023, the global ADHD therapeutics market is valued at approximately USD 13.5 billion, with pediatric ADHD treatment accounting for roughly 45–50% of this figure ([1]). Intuniv commands a significant share, primarily in North America and Europe, driven by prescribers’ preference for non-stimulant options and its favorable safety profile.

Competitive Positioning

Intuniv's main competitors include stimulant medications such as Adderall (amphetamine/dextroamphetamine) and Vyvanse (lisdexamfetamine), along with other non-stimulants like Strattera (atomoxetine), and emerging drugs like Xelstrym (serotonin receptor modulators).

Despite stimulant dominance, Intuniv’s non-stimulant classification appeals to patients and parents concerned about misuse potential, leading to increased prescribing rates especially in populations with methylphenidate or amphetamine contraindications.

Regional Insights

  • North America: The dominant market, accounting for over 60% of global revenue, driven by high diagnosis rates and insurance coverage.
  • Europe: Growing acceptance, bolstered by national guidelines favoring non-stimulant options.
  • Asia-Pacific: Rapid growth prospects, with expanding awareness and diagnosis rates.

Market Drivers and Barriers

Drivers:

  • Increasing ADHD prevalence (estimated worldwide at 5-7% in children) ([2]).
  • Rising awareness of non-stimulant treatment benefits.
  • Long-term safety and tolerability profiles.

Barriers:

  • High cost of newer formulations.
  • Limited awareness among non-specialists.
  • Competition from generics and other non-stimulants.

Regulatory and Patent Outlook

Patent protections for Intuniv’s formulation are approaching expiration around 2025–2027, opening avenues for generic competition which could influence pricing and market share.

Market Projections

By 2030, the ADHD non-stimulant segment is projected to grow at a CAGR of approximately 6.5%, reaching USD 22 billion globally. Specifically, Intuniv’s market share is expected to stabilize or slightly increase due to ongoing clinical validation and expanded indication research. The key growth catalysts include clinician acceptance, regulatory approvals for new indications, and the entry of biosimilar offerings.


Future Market Opportunities

Expanded Indications

Clinical trials exploring Intuniv’s utility in tic disorders, ODD, and co-morbid emotional dysregulation suggest potential label expansions, which could broaden the market.

Technological Advancements

Digital health integrations—such as adherence monitoring apps and real-time symptom tracking—could enhance treatment outcomes and market adoption.

Global Expansion

Emerging markets in Asia, Latin America, and Africa present significant growth potential, contingent on regulatory pathways and healthcare infrastructure development.


Conclusion and Strategic Outlook

Intuniv’s clinical profile and ongoing research affirm its role in the evolving ADHD treatment paradigm, particularly as demand shifts towards safer, non-stimulant options. The upcoming patent expirations and biosimilar entries will necessitate strategic adaptations for stakeholders. Investment in expanded indication trials, digital health integration, and regional penetration offers promising avenues for sustained growth.


Key Takeaways

  • Clinical validation reinforces Intuniv’s efficacy and safety for ADHD, with ongoing trials indicating expanded applications.
  • Market positioning benefits from growing preference for non-stimulant therapies amid a large and expanding ADHD market.
  • Patent expirations anticipated in mid-2020s will lead to increased generic competition, potentially reducing prices.
  • Future growth hinges on regulatory approvals for new indications and geographic expansion, especially in emerging markets.
  • Innovation and digital health integration will be critical to maintaining competitive advantage.

FAQs

1. What are the main differentiators of Intuniv in ADHD treatment?
Intuniv’s non-stimulant profile offers a favorable safety and abuse potential profile, making it suitable for patients intolerant to stimulants or with co-morbidities.

2. Are there any recent FDA approvals expanding Intuniv’s use?
As of 2023, no new FDA indications for Intuniv have been approved beyond ADHD and hypertension. However, ongoing trials aim to extend its therapeutic scope.

3. How does Intuniv compare cost-wise to stimulant medications?
Initially, Intuniv tends to be more expensive than generic stimulants. However, long-term savings may result from reduced side effects and lower misuse potential.

4. What is the forecasted impact of biosimilars on Intuniv’s market?
Biosimilars may significantly lower costs and increase accessibility once approved, but their impact will depend on regulatory approval timelines and clinical acceptance.

5. Which regions show the highest growth potential for Intuniv?
Emerging markets in Asia-Pacific and Latin America offer substantial growth opportunities, supported by increasing ADHD awareness and diagnosis rates.


References

  1. GlobalData. (2023). ADHD therapeutic market analysis.
  2. Polanczyk, G., et al. (2015). "Worldwide prevalence of ADHD: A systematic review and meta-regression analysis." The American Journal of Psychiatry.

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