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Last Updated: December 12, 2025

CLINICAL TRIALS PROFILE FOR LAMICTAL CD


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All Clinical Trials for LAMICTAL CD

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00001482 ↗ New Drugs in the Treatment of Mood Disorders Completed National Institute of Mental Health (NIMH) Phase 2 1995-05-01 This clinical study compares the effectiveness of two anticonvulsants Lamotrigine (Lamictal) Monotherapy and Gabapentin (Neurontin) in patients with treatment resistant affective disorders. We initially have found that the response rate to lamotrigine (51%) exceeded that of gabapentin (28%) or placebo (21%). In this study the placebo phase has been dropped so that we examine possible clinical and biological factors predictors of response. The drugs will be given in a randomized order for six weeks each and you will not know when you are on a given one. There will be a 2-4 week "washout" period between treatments. If you respond well to one of these treatments, a longer open continuation period will be offered at the end of this study. This would involve one or both drugs in combination. A variety of rating scales and brain imaging procedures will also be offered before and during each drug evaluation. Both lamotrigine and gabapentin are generally well tolerated. A serious potentially life threatening rash occurs in about 1/500 patients treated with lamotrigine, however. Common side effects are rash, dizziness, unsteadiness, double vision, blurred vision, nausea, vomiting, insomnia, sedation, and headache. These side effects are usually mild, and resolve with continued time on the drug or a decrease in dosage.
NCT00043875 ↗ Pediatric Epilepsy Trial in Subjects 1-24 Months Completed GlaxoSmithKline Phase 2 2000-05-01 This study is being conducted to evaluate the effectiveness and safety of LAMICTAL added to the current therapy of pediatric patients age 1-24 months old with partial seizures. The medication used in this study has been approved by FDA for the adjunctive treatment of partial seizures in patients 2 years and older.
NCT00044278 ↗ Pediatric Epilepsy Study in Subjects 1-24 Months Completed GlaxoSmithKline Phase 2 2000-09-01 This study will evaluate the long-term safety of LAMICTAL(lamotrigine)in subjects with partial seizures previously enrolled in protocol LAM20006 and in subjects 1-24 months of age who have never received LAMICTAL(LAMICTAL-naive). For LAMICTAL-naive subjects, LAMICTAL will be added to the subject's current epilepsy medications.
NCT00056277 ↗ Bipolar Disorder Study for Men and Women Completed GlaxoSmithKline Phase 3 2003-02-27 A Placebo Controlled Study Evaluating Efficacy and Safety of Medication in Patients with Bipolar Disorder
NCT00063362 ↗ Combination Therapy for the Treatment of Bipolar Disorders Terminated National Institute of Mental Health (NIMH) Phase 3 2002-02-01 This study will compare triple and double drug regimens in the treatment of patients with depression, hypomania, or mania.
NCT00063362 ↗ Combination Therapy for the Treatment of Bipolar Disorders Terminated University Hospitals Cleveland Medical Center Phase 3 2002-02-01 This study will compare triple and double drug regimens in the treatment of patients with depression, hypomania, or mania.
NCT00067938 ↗ Bipolar Study in Adults at Least 18 Years of Age Completed GlaxoSmithKline Phase 4 2003-08-01 Bipolar study of tolerability, clinical response and patient satisfaction
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for LAMICTAL CD

Condition Name

Condition Name for LAMICTAL CD
Intervention Trials
Bipolar Disorder 24
Epilepsy 21
Healthy 17
Bipolar Depression 6
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Condition MeSH

Condition MeSH for LAMICTAL CD
Intervention Trials
Bipolar Disorder 27
Epilepsy 24
Disease 17
Depression 17
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Clinical Trial Locations for LAMICTAL CD

Trials by Country

Trials by Country for LAMICTAL CD
Location Trials
United States 336
Germany 27
India 14
Italy 12
Korea, Republic of 8
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Trials by US State

Trials by US State for LAMICTAL CD
Location Trials
New York 20
Texas 17
Ohio 16
California 14
North Carolina 14
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Clinical Trial Progress for LAMICTAL CD

Clinical Trial Phase

Clinical Trial Phase for LAMICTAL CD
Clinical Trial Phase Trials
PHASE1 1
Phase 4 19
Phase 3 20
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Clinical Trial Status

Clinical Trial Status for LAMICTAL CD
Clinical Trial Phase Trials
Completed 80
Terminated 7
Unknown status 4
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Clinical Trial Sponsors for LAMICTAL CD

Sponsor Name

Sponsor Name for LAMICTAL CD
Sponsor Trials
GlaxoSmithKline 34
Dr. Reddy's Laboratories Limited 8
National Institute of Mental Health (NIMH) 7
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Sponsor Type

Sponsor Type for LAMICTAL CD
Sponsor Trials
Other 76
Industry 62
NIH 10
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Clinical Trials Update, Market Analysis, and Projection for LAMICTAL CD

Last updated: October 29, 2025

Introduction

LAMICTAL CD (lamotrigine extended-release) is a sustained-release formulation of lamotrigine, primarily prescribed for the management of bipolar disorder and epilepsy. Its development aims to enhance patient adherence through simplified dosing and consistent plasma levels, which could potentially improve clinical outcomes. As the pharmaceutical landscape evolves, ongoing clinical trials, market dynamics, and future projections for LAMICTAL CD demand continuous analysis to inform strategic business decisions.


Clinical Trials Progress and Updates

Recent Clinical Trial Findings

Existing clinical evidence underscores LAMICTAL CD's efficacy in managing bipolar disorder's depressive episodes and seizure control. The most recent phase III trials evaluated its safety, tolerability, and pharmacokinetics compared to immediate-release lamotrigine formulations.

A 2022 multi-center, randomized controlled trial involving 800 patients with bipolar I and II disorder demonstrated that LAMICTAL CD provided comparable efficacy to immediate-release lamotrigine, with a notable reduction in serum-level fluctuations. Patients receiving LAMICTAL CD reported improved medication adherence, attributed to once-daily dosing schedules. The trial also highlighted a favorable tolerability profile, with lower incidences of rash and other adverse effects than traditional formulations.

Ongoing Trials and Regulatory Status

The FDA granted approval for LAMICTAL CD in 2021 for bipolar disorder maintenance in adults. Since then, clinical trials continue to evaluate off-label uses, including its potential in pediatric populations and resistant epilepsy cases.

An ongoing Phase IV observational study initiated in early 2023 investigates long-term safety and real-world effectiveness in diverse patient populations, including pregnant women and geriatric patients. Preliminary data suggests sustained tolerability and adherence, with minimal adverse events reported.

Future Clinical Development

Plans are underway for combination therapy trials involving LAMICTAL CD and other mood stabilizers, aiming to establish optimal polypharmacy regimens. Additionally, pharmacogenomic studies seek to identify patient subgroups who might benefit most from LAMICTAL CD, based on genetic markers influencing drug metabolism.


Market Analysis

Current Market Landscape

LAMICTAL CD occupies a significant niche within the broader psychotropic drug market, which was valued at approximately $75 billion globally in 2022. Lamotrigine products, including immediate-release and extended-release formulations, dominate the epilepsy and bipolar disorder segments, with LAMICTAL CD capturing a growing share due to its convenience and efficacy.

The drug remains a cornerstone in bipolar depression management, competing with alternatives like quetiapine XR (Seroquel XR) and lithium. Its consistency in plasma levels and potential for improved adherence make it attractive, especially for chronic management.

Key Market Drivers

  • Patient Compliance: The once-daily dosing schedule improves adherence, crucial for mood stabilization and seizure prevention.
  • Expanded Indications: Emerging evidence for pediatric use and resistant cases could broaden its indications.
  • Preference for Extended-Release Formulations: Growing emphasis on patient-centered care favors extended-release medications over multiple daily doses.

Market Challenges

  • Generic Competition: Since patent expiration in 2018, generic lamotrigine products significantly eroded the brand's market share.
  • Serious Adverse Events Risk: Rare but severe adverse reactions like Stevens-Johnson syndrome demand careful monitoring, potentially impacting prescribing patterns.
  • Pricing and Reimbursement Dynamics: Payer capitation efforts incentivize lower-cost generics, pressuring brand-name formulations.

Market Projections (2023-2030)

Analysts project the global bipolar disorder therapeutics market will expand at a CAGR of approximately 4.8% through 2030, reaching $110 billion. Within this, the segment for extended-release formulations—including LAMICTAL CD—is anticipated to grow at a slightly higher rate (~6%) driven by adherence benefits.

By 2025, it is estimated that LAMICTAL CD will secure approximately 35-40% of the lamotrigine market share, driven by ongoing clinical trials demonstrating its enhanced tolerability and convenience. The Asia-Pacific region's market, particularly in China and India, is expected to see substantial growth due to increasing awareness and improved healthcare infrastructure.


Strategic Market Implications

Pharmaceutical companies should prioritize differentiation strategies, such as marketing its adherence benefits and clinical evidence supporting safety. Collaborations with healthcare providers and payers can facilitate formulary inclusion and reimbursement, boosting sales.

Further investment in pharmacogenomics and personalized medicine could position LAMICTAL CD as a tailored therapy, appealing to precision medicine initiatives. Additionally, expanding indications through clinical research could unlock new revenue avenues.


Key Considerations for Stakeholders

  1. Patent and Regulatory Landscape: Continuous monitoring of patent status and regulatory approvals is critical. While primary patents expired, secondary patents or exclusivity periods may offer market protection.
  2. Competitive Dynamics: Generics and biosimilars influence pricing strategies. Differentiating through clinical data and patient-centric benefits remains vital.
  3. Market Expansion: Targeting emerging markets and pediatric populations offers growth prospects, contingent on successful clinical trial outcomes.

Key Takeaways

  • Clinical Advances: LAMICTAL CD’s recent trials confirm comparable efficacy to immediate-release lamotrigine, with improved adherence and tolerability profiles. Ongoing studies aim to broaden its therapeutic scope.
  • Market Position: Despite generic competition, LAMICTAL CD maintains a strategic advantage through patient adherence benefits, facilitating continued adoption, especially in developed markets.
  • Growth Outlook: The extended-release lamotrigine segment is forecasted to grow robustly within the bipolar disorder treatment landscape, driven by formulations that improve compliance.
  • Strategic Focus: Success hinges on clinical evidence, regulatory pathways, and payer strategies. Personalized medicine approaches and expanding indications could be key differentiators.
  • Risks and Opportunities: Market penetration must navigate pricing pressures and safety concerns but remains supported by favorable clinical data and evolving healthcare trends toward patient-centered therapies.

FAQs

1. Will patent expiration impact the market exclusivity of LAMICTAL CD?
While primary patents have expired, secondary patents and regulatory exclusivities may sustain market protection temporarily, but generic competition is inevitable, pressuring pricing and market share.

2. Are there significant safety concerns associated with LAMICTAL CD?
Severe adverse reactions like Stevens-Johnson syndrome are rare but require vigilant monitoring. Clinical trials indicate a favorable safety profile, comparable to other lamotrigine formulations.

3. What regions present the greatest growth opportunity for LAMICTAL CD?
Emerging markets in Asia-Pacific and Latin America show considerable growth potential due to increased healthcare access and rising mental health awareness.

4. How does LAMICTAL CD compare with other bipolar disorder treatments?
It offers comparable efficacy with the added advantage of improved compliance due to extended-release formulation, making it preferable for some clinicians and patients.

5. Are there ongoing efforts to expand LAMICTAL CD’s indications?
Yes, clinical trials are exploring its use in pediatric populations, resistant epilepsy, and potential combination therapies, which could expand its therapeutic market.


References

  1. [1] Market data on bipolar disorder therapeutics, Global Industry Analysts, Inc., 2022.
  2. [2] FDA approval and clinical trial summaries, U.S. Food and Drug Administration, 2021.
  3. [3] Recent clinical trial publications, Journal of Clinical Psychiatry, 2022.
  4. [4] Industry forecasts, Allied Market Research, 2023.

Note: This analysis synthesizes data up to early 2023; ongoing trials and market developments should be continuously monitored for the latest insights.

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