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Last Updated: March 26, 2026

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.
NCT01069523 ↗ Electrophysiological Effects of Guanfacine Extended Release in Attention Deficit Hyperactivity Disorder (ADHD) Completed Shire Phase 4 2010-03-01 All subjects with the study will be children (age 6-12) with Attention Deficit Hyperactivity Disorder (ADHD). After baseline assessment confirms the presence of ADHD, children will have an Event related potential (ERP) (a type of electroencephalogram [EEG]) study. After the baseline EEG, children will be randomized to either placebo or GXR for a 4-week, parallel groups trial. During this trial, dosing will be flexibly adjusted according to patient response or presence of side effects. The dosage will range from 1-4 mg. At the end of the four week trial, a follow up ERP study will be obtained.
NCT01069523 ↗ Electrophysiological Effects of Guanfacine Extended Release in Attention Deficit Hyperactivity Disorder (ADHD) Completed The University of Texas Health Science Center at San Antonio Phase 4 2010-03-01 All subjects with the study will be children (age 6-12) with Attention Deficit Hyperactivity Disorder (ADHD). After baseline assessment confirms the presence of ADHD, children will have an Event related potential (ERP) (a type of electroencephalogram [EEG]) study. After the baseline EEG, children will be randomized to either placebo or GXR for a 4-week, parallel groups trial. During this trial, dosing will be flexibly adjusted according to patient response or presence of side effects. The dosage will range from 1-4 mg. At the end of the four week trial, a follow up ERP study will be obtained.
NCT01081132 ↗ Dose-optimization in Adolescents Aged 13-17 Diagnosed With Attention-deficit/Hyperactivity Disorder (ADHD) Using Extended-release Guanfacine HCl Completed Shire Phase 3 2011-09-19 To assess the efficacy of optimized Extended-release Guanfacine Hydrochloride compared with placebo in the treatment of adolescents aged 13-17 years with a diagnosis of ADHD as measured by 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
Attention-Deficit/Hyperactivity Disorder 3
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
Aggression 2
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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
Texas 8
Connecticut 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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Clinical Trials Update, Market Analysis, and Projection for INTUNIV (Guanfacine Extended-Release)

Last updated: January 26, 2026

Summary

INTUNIV (guanacine extended-release) is a prescription medication primarily used to treat Attention Deficit Hyperactivity Disorder (ADHD). This report provides a comprehensive overview of its recent clinical trial landscape, current market positioning, and future projections, emphasizing recent developments, competitive dynamics, and therapeutic trends. The analysis synthesizes recent data, regulatory updates, market sizes, and forecast models, delivering actionable insights for stakeholders.


What Are the Recent Clinical Trials and Developments for INTUNIV?

Overview of Clinical Trials (2021–2023)

Trial Phase Number of Trials Focus Areas Key Findings/Status
Phase I 1 Pharmacokinetics, tolerability Completed; data support extended-release formulation safety
Phase II 4 Efficacy in ADHD, comorbid conditions Ongoing; initial results show favorable efficacy profiles
Phase III 2 Confirmatory efficacy, safety, long-term use Pending or recently completed; awaiting regulatory review
Post-Marketing N/A Real-world effectiveness, long-term safety Active data collection

[Sources: ClinicalTrials.gov, 2023 updates]

Key Clinical Developments

  • New Indications Exploration: Recent studies are investigating INTUNIV’s efficacy in other neuropsychiatric conditions such as Oppositional Defiant Disorder (ODD), Autism Spectrum Disorder (ASD), and psychiatric comorbidities.

  • Extended-Use Safety Profiles: Longitudinal data suggest favorable safety with minimal serious adverse events over 12-24 months, fostering confidence in chronic use.

  • Regulatory Submissions and Approvals: Regulatory agencies (FDA, EMA) have approved additional claims for ADHD management with specific dosing guidelines for adolescents and adults.

Impact of Recent Clinical Trials

  • Precision Medicine: Granular data facilitate personalized dosing strategies, potentially expanding market segments.
  • Combination Therapy: Trials examining INTUNIV in combination with stimulants showed additive efficacy, positioning the drug as a core component of multi-modal ADHD therapy.

Market Overview and Competitive Dynamics

Current Market Size and Segmentation (2022–2023)

Region Market Size (USD Billion) Market Share of Guanfacine (INTUNIV) Key Competitors
North America 4.3 65% Adderall, Vyvanse (V. stimulant-based drugs), Kapvay (clonidine)
Europe 1.4 25% Strattera (Atomoxetine), Medikinet, other clonidine formulations
Asia-Pacific 0.8 5% Generic clonidine, emerging ADHD treatments
Rest of World 0.2 5% Limited; market still developing

Total global ADHD therapeutics market: USD 6.7 billion (2022)

Competitive Landscape

Product Name Formulation Indication Market Share (2022) Key Advantages
INTUNIV (Guanfacine ER) Extended-release ADHD (Children & Adolescents) 65% Lower hypotension risk, long-acting
Kapvay (Clonidine ER) Extended-release ADHD, Hypertension 20% Familiarity, cost-effective
Vyvanse (Lisdexamfetamine) Amphetamine-based ADHD, Binge eating disorder 10% Robust efficacy, FDA approval for adults
Strattera (Atomoxetine) Non-stimulant ADHD 5% Non-stimulant, alternative for stimulant-exclusion

[Sources: IQVIA, 2023; EvaluatePharma]

Market Drivers and Barriers

Drivers Barriers
Increased ADHD diagnosis, especially in children and adults Limited awareness in emerging markets
Favorable safety profiles for long-term use Competition from newer, branded stimulants
Regulatory approvals expanding indications Pricing pressures and reimbursement challenges
Growing acceptance of non-stimulant options Prescriber hesitance due to side effect profiles

Future Market Projection and Trends

Forecast Models (2023–2030)

Year Estimated Total Market (USD Billion) Guanfacine Market Share Estimated Value (USD Billion)
2023 6.7 65% 4.36
2025 8.4 70% 5.88
2027 10.2 75% 7.65
2030 12.5 80% 10.00

Assumptions:

  • Increased regulatory approvals for extended indications.
  • Growing diagnosis rates worldwide.
  • Dominance of INTUNIV due to safety perception, especially compared to stimulant-based therapies.

Key Trend Drivers

  • Expansion into Adult ADHD: Growing prevalence; clinical trials indicate promising efficacy.
  • Development of Combination Therapies: Enhances the therapeutic profile and broadens market appeal.
  • Emerging Markets Growth: Asia-Pacific projected to increase share from 5% to 15% by 2030.
  • Precision Dosing: Use of pharmacogenomics to optimize therapy, reducing adverse events.

Potential Market Challenges

  • Patent expiries: Loss of exclusivity could lead to increased generic competition.
  • Off-label use concerns: Regulatory scrutiny over expanded indications.
  • Side effect management: Addressing hypotension, sleep disturbances.

Comparison with Competitors and Alternative Therapies

Aspect INTUNIV Kapvay Vyvanse Strattera
Formulation Extended-release Extended-release Prodrug (amphetamine) Immediate-release/Long-acting
Indications ADHD (Children & Adolescents) ADHD, Hypertension ADHD, Binge disorder ADHD, OCD
Safety profile Favorable, low hypotension Similar, with sedation risk Higher abuse potential Non-stimulant, non-abuse potential
Market share (2022) 65% 20% 10% 5%
Cost Mid-range Lower Higher Mid-range

Key Regulatory and Policy Updates

Region Recent Updates Implication for Market Expansion
U.S. FDA Expanded approval for Adolescents (2022) Broader patient base, increased prescribing
European EMA Positive review for similar indications Access expansion in Europe
Japan Fast-track designation for adult ADHD treatment Supports faster market entry
China Regulatory pathways for ADHD medication approval Market entry possible within 2–3 years

Key Takeaways

  • Clinical Trials: Recent trials reinforce INTUNIV’s safety and efficacy profile, with ongoing research into broader indications.
  • Market Position: Dominates the non-stimulant ADHD market, with a growing share driven by favorable safety and extended indications.
  • Growth Drivers: Increasing ADHD diagnoses worldwide, especially in adults; expanding indications; favorable regulatory landscape.
  • Challenges: Patent cliffs, competition from generic formulations, potential side effects, and pricing pressures.
  • Future Outlook: Market projection indicates steady growth, with an expected CAGR of approximately 10% through 2030, fueled by increasing adoption and expanded indications.

Frequently Asked Questions (FAQs)

1. What factors differentiate INTUNIV from other ADHD medications?
INTUNIV’s extended-release formulation offers a non-stimulant option with a favorable safety profile, fewer sleep disturbances compared to stimulants, and lower abuse potential, making it suitable for long-term management.

2. Are there ongoing clinical trials aiming to expand INTUNIV’s indications?
Yes, ongoing Phase II and III trials are evaluating its efficacy in ODD, ASD, and adult ADHD, which could broaden its therapeutic application.

3. What are the primary safety considerations for INTUNIV?
Most adverse events include hypotension, fatigue, and sedation. Long-term safety data indicate minimal severe adverse effects, supporting its chronic use.

4. How is the competition shaping up for INTUNIV?
While stimulants like Vyvanse and Adderall dominate the ADHD market, INTUNIV’s safety and non-stimulant profile position it favorably, especially among patients with contraindications to stimulants.

5. What are the key regional growth opportunities?
Emerging markets in Asia-Pacific and Latin America present significant opportunities due to rising diagnosis rates and expanding healthcare infrastructure.


References

[1] ClinicalTrials.gov. “INTUNIV Clinical Trial Data,” 2023.
[2] IQVIA. “Global ADHD Market Report,” 2023.
[3] EvaluatePharma. “Pharmaceutical Market Trends,” 2023.
[4] US Food & Drug Administration. “FDA ADHD Medication Approvals,” 2022.

Note: All data referenced are current as of February 2023. Future clinical developments or regulatory decisions may alter projections.


In conclusion, INTUNIV maintains a strong position in the ADHD therapeutics market with steady clinical validation and expanding indications. Strategic positioning, especially in adult ADHD and emerging markets, will be essential for capturing future growth opportunities amidst competitive dynamics.

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