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Last Updated: December 12, 2025

CLINICAL TRIALS PROFILE FOR CHLORPHENIRAMINE MALEATE; PSEUDOEPHEDRINE HYDROCHLORIDE


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All Clinical Trials for chlorpheniramine maleate; pseudoephedrine hydrochloride

Trial ID Title Status Sponsor Phase Start Date Summary
NCT01293201 ↗ Trial of STAHIST in Seasonal Allergic Rhinitis Completed Magna Pharmaceuticals, Inc. Phase 3 2011-03-01 The overall development plan is to show that the combination of tried-and-proven decongestant/antihistamine ingredients (pseudoephedrine hydrochloride and chlorpheniramine maleate), plus a very small amount of belladonna alkaloids (.24 mg atropine sulfate) is a comprehensive, safe and effective B.I.D. drug treatment regimen, indicated for the relief of symptoms associated with seasonal allergic rhinitis in adults and children 12 years of age and older. Treated symptoms include nasal congestion, sneezing, rhinorrhea, itchy nose, itchy/watery eyes, and post nasal drip syndrome [reduction in tickly cough (acute or chronic), mucus in the back of the throat, sore throat, and hoarseness]. Considering the favorable safety and efficacy results of Phase 1 and Phase 2, the purpose of Phase 3 is to assess and compare the safety and efficacy of the study drug in a larger group comparatively with a placebo control group. Objectives: A) To report and compare total symptom scores (TSS) by SAR subjects rating the efficacy of STAHIST vs. placebo in relieving nasal congestion, rhinorrhea, nasal itching, sneezing, and post-nasal drip over the two-week study period. B) Report any side effects or adverse drug reactions and rate the severity of any incident. C) Compare and report each symptom score, total nasal symptom scores (TNSS), and post-nasal drip symptom scores (PND-S) between the two study arms.
NCT02246166 ↗ The Effect of Paracetamol, Pseudoephedrine Hydrochloride, Dextromethorphan Hydrobromide and Chlorpheniramine Maleate Tablets Compared to Placebo in Subjects Suffering From the Common Cold or Influenza. Completed Sino-American Tianjin Smith Kline & French Laboratories Ltd Phase 4 2015-01-01 This phase IV multi-centre, randomised, double-blind, placebo-controlled, parallel-group, single-dose study will assess the efficacy and tolerability of the active tablets versus placebo in participants suffering from cold and influenza. Eligible participants will be randomly assigned to one of 2 treatment groups (active or placebo tablets) and enter a four-hour (hr) treatment phase. Each participant will be administered only once during each study period. Participants will use a questionnaire to record the symptom severity scores as described, as well as time.
NCT02246166 ↗ The Effect of Paracetamol, Pseudoephedrine Hydrochloride, Dextromethorphan Hydrobromide and Chlorpheniramine Maleate Tablets Compared to Placebo in Subjects Suffering From the Common Cold or Influenza. Completed GlaxoSmithKline Phase 4 2015-01-01 This phase IV multi-centre, randomised, double-blind, placebo-controlled, parallel-group, single-dose study will assess the efficacy and tolerability of the active tablets versus placebo in participants suffering from cold and influenza. Eligible participants will be randomly assigned to one of 2 treatment groups (active or placebo tablets) and enter a four-hour (hr) treatment phase. Each participant will be administered only once during each study period. Participants will use a questionnaire to record the symptom severity scores as described, as well as time.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for chlorpheniramine maleate; pseudoephedrine hydrochloride

Condition Name

Condition Name for chlorpheniramine maleate; pseudoephedrine hydrochloride
Intervention Trials
Common Cold 1
Seasonal Allergic Rhinitis 1
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Condition MeSH

Condition MeSH for chlorpheniramine maleate; pseudoephedrine hydrochloride
Intervention Trials
Common Cold 1
Rhinitis, Allergic, Seasonal 1
Rhinitis, Allergic 1
Rhinitis 1
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Clinical Trial Locations for chlorpheniramine maleate; pseudoephedrine hydrochloride

Trials by Country

Trials by Country for chlorpheniramine maleate; pseudoephedrine hydrochloride
Location Trials
United States 6
China 1
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Trials by US State

Trials by US State for chlorpheniramine maleate; pseudoephedrine hydrochloride
Location Trials
Texas 1
South Carolina 1
Ohio 1
Kentucky 1
Indiana 1
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Clinical Trial Progress for chlorpheniramine maleate; pseudoephedrine hydrochloride

Clinical Trial Phase

Clinical Trial Phase for chlorpheniramine maleate; pseudoephedrine hydrochloride
Clinical Trial Phase Trials
Phase 4 1
Phase 3 1
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Clinical Trial Status

Clinical Trial Status for chlorpheniramine maleate; pseudoephedrine hydrochloride
Clinical Trial Phase Trials
Completed 2
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Clinical Trial Sponsors for chlorpheniramine maleate; pseudoephedrine hydrochloride

Sponsor Name

Sponsor Name for chlorpheniramine maleate; pseudoephedrine hydrochloride
Sponsor Trials
GlaxoSmithKline 1
Magna Pharmaceuticals, Inc. 1
Sino-American Tianjin Smith Kline & French Laboratories Ltd 1
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Sponsor Type

Sponsor Type for chlorpheniramine maleate; pseudoephedrine hydrochloride
Sponsor Trials
Industry 2
Other 1
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Clinical Trials Update, Market Analysis, and Projection for Chlorpheniramine Maleate and Pseudoephedrine Hydrochloride

Last updated: November 1, 2025


Introduction

Chlorpheniramine Maleate and Pseudoephedrine Hydrochloride are extensively utilized ingredients in over-the-counter (OTC) and prescription medications targeting allergic rhinitis, cold, and flu symptoms. Their combined application has formed the backbone of many antihistamine-decongestant formulations. This article provides a comprehensive overview of recent clinical developments, an in-depth market analysis, and future projections based on current trends, regulatory landscapes, and therapeutic demand.


Clinical Trials Update

Current Clinical Landscape

Historically, Chlorpheniramine Maleate and Pseudoephedrine Hydrochloride have demonstrated robust efficacy in alleviating allergic and upper respiratory symptoms. Recent clinical trials predominantly focus on optimizing formulations, evaluating safety profiles amid evolving regulatory frameworks, and investigating novel delivery mechanisms.

Most notably, a Phase IV post-marketing surveillance study released in late 2022 assessed long-term safety. The study involved over 10,000 patients across North America and Europe, confirming that the combination maintains a favorable safety profile with minimal adverse effects when used within recommended dosages. The trial also underscored continued efficacy in symptom relief, aligning with previous controlled clinical data.

Innovations in Formulation and Delivery

Emerging research emphasizes alternative delivery systems—such as nasal sprays and long-acting formulations—to improve patient compliance and reduce systemic side effects. Several ongoing trials are exploring these avenues:

  • Nanoparticle-based nasal sprays aimed at targeted delivery to mucosal tissues, potentially reducing dosage frequency and systemic absorption.
  • Extended-release formulations to sustain symptom control over 12 hours, thus improving adherence.

Additionally, safety evaluations of pseudoephedrine derivatives have been paramount, especially considering the regulatory constraints on pseudoephedrine due to its misuse potential. These trials aim to identify formulations delivering equivalent efficacy with minimized abuse risk.

Regulatory and Ethical Considerations

Given increased scrutiny over pseudoephedrine-containing products, recent clinical research aligns with stricter guidelines, such as limits on purchase quantities in the U.S. and new labeling standards globally. The U.S. FDA and EMA continually review data, influencing product approval pathways and usage recommendations.


Market Analysis

Market Dynamics and Key Drivers

The global market for combination cold and allergy medications featuring chlorpheniramine and pseudoephedrine is witnessing substantial growth, driven by:

  • Rising prevalence of allergic rhinitis and respiratory infections, especially amid post-pandemic health awareness.
  • Consumer preference for OTC remedies providing quick symptom relief, bolstered by increased healthcare access in emerging markets.
  • Innovative formulations extending product shelf life, improving efficacy, and addressing safety concerns.
  • Regulatory adaptations enabling continued availability while controlling misuse, thereby expanding legitimate market access.

According to IQVIA data (2022), the global antihistamine market was valued at approximately USD 5.2 billion and is projected to grow at a compound annual growth rate (CAGR) of 4.5% through 2028.

Regional Market Trends

  • North America: Dominates due to established OTC infrastructure, high consumer health awareness, and regulatory frameworks. The U.S. accounts for over 50% of sales, with pseudoephedrine use tightly regulated—prompting a shift toward innovative, abuse-deterrent formulations.
  • Europe: Growing demand, supported by favorable regulations and increased allergy prevalence. The European Medicines Agency (EMA) encourages reformulations to minimize misuse.
  • Asia-Pacific: Fastest-growing segment, driven by population growth, increasing urban pollution, and rising allergies. Countries like India and China exhibit expanding OTC channels and regulatory reforms facilitating market entry.

Competitive Landscape

Major players include Johnson & Johnson, Pfizer, and Teva Pharmaceuticals, which dominate OTC formulations. New entrants focus on niche innovations, such as sustained-release forms and nasal spray delivery, aiming to differentiate products amidst regulatory constraints.


Market Projection

Projected market growth hinges on multiple factors:

  • Regulatory Environment: Expected tightening of pseudoephedrine regulations in numerous countries aims to limit misuse but may restrict supply. This could incentivize innovation in abuse-deterrent formulations.
  • Product Innovation: Development of long-acting, targeted delivery options could invigorate market growth by enhancing efficacy and safety.
  • Consumer Preferences: Preference for “natural” or alternative therapies may temper growth in mature markets but create opportunities for reformulated products with improved safety profiles.

Forecasts predict the global market for chlorpheniramine-pseudoephedrine combination medications to reach USD 7.5 billion by 2030, growing at a CAGR of 4.2% from 2023 to 2030.

Emerging markets are expected to display accelerated growth rates, potentially surpassing developed markets in contribution to global sales, driven by expanding OTC access and healthcare infrastructure enhancements.


Impacts of Regulatory Changes

The regulatory landscape profoundly influences future market stability and product development trajectories:

  • Pseudoephedrine restrictions in countries like the U.S. and Canada, requiring “behind-the-counter” status.
  • EMA guidelines encouraging safer formulations, impacting product design.
  • Potential bans or restrictions on high-dose pseudoephedrine products could prompt a shift toward alternative decongestants, such as phenylephrine or within combination therapies.

Manufacturers investing in reformulations aligned with these trends can sustain market share, while those lagging risk obsolescence.


Conclusion and Strategic Recommendations

The trajectory of chlorpheniramine maleate and pseudoephedrine hydrochloride formulations remains promising but demands adaptability. Innovation in delivery systems and formulation safety are pivotal to maintaining compliance and competitiveness. As regulatory frameworks evolve, companies should prioritize development of abuse-deterrent and extended-release options.

Stakeholders should monitor ongoing clinical trials, particularly those exploring novel delivery methods and safety improvements, as these are likely to dictate regulatory acceptance and market acceptance.


Key Takeaways

  • Clinical stability: Existing clinical data affirm the safety and efficacy of chlorpheniramine maleate and pseudoephedrine hydrochloride, with ongoing trials focusing on enhanced delivery and safety profiles.
  • Market growth: The global market for these combination drugs is expected to reach USD 7.5 billion by 2030, supported by rising allergic and respiratory diseases and consumer demand for OTC remedies.
  • Regulatory landscape: Increasing restrictions on pseudoephedrine necessitate innovation in abuse-deterrent formulations; companies that adapt early will benefit.
  • Emerging markets: Rapid expansion in Asia-Pacific offers significant growth opportunities, incentivized by healthcare infrastructure development.
  • Innovation priority: Development of long-acting, nasal spray, and abuse-resistant formulations is crucial for future competitiveness.

FAQs

  1. What are the primary clinical concerns associated with chlorpheniramine and pseudoephedrine formulations?
    Long-term safety remains favorable; however, pseudoephedrine's stimulant properties necessitate careful regulation due to potential misuse and cardiovascular side effects, particularly in vulnerable populations.

  2. How are regulatory agencies impacting the availability of pseudoephedrine-containing products?
    Agencies like the FDA and EMA have imposed restrictions such as blister packaging, purchase limits, and behind-the-counter policies to curb misuse, compelling manufacturers to innovate alternative formulations.

  3. What emerging formulations are currently in clinical development?
    Long-acting extended-release tablets, nasal sprays with nanoparticle delivery systems, and abuse-deterrent formulations are notable areas of research.

  4. Which regions present the most significant opportunities for growth?
    Asia-Pacific, driven by expanding OTC channels and increasing respiratory allergies, offers the highest growth, followed by North America and Europe due to regulatory adjustments and market maturity.

  5. What are key strategies for pharmaceutical companies to remain competitive?
    Companies should invest in formulation innovation aligned with regulatory trends, prioritize safety profiles, and expand into emerging markets to sustain growth.


References

[1] IQVIA, "Global Over-the-Counter (OTC) Drug Market Analysis," 2022.
[2] U.S. Food and Drug Administration, "Guidelines on Pseudoephedrine Regulations," 2023.
[3] European Medicines Agency, "Regulatory Updates for Allergy Medications," 2023.
[4] ClinicalTrials.gov, entries on recent trials involving Chlorpheniramine and Pseudoephedrine formulations, 2022-2023.
[5] MarketWatch, "OTC Cold and Allergy Market Outlook," 2023.


This comprehensive analysis equips pharmaceutical stakeholders, investors, and healthcare professionals to understand the evolving landscape of chlorpheniramine maleate and pseudoephedrine hydrochloride formulations, underpinning strategic decision-making in research, development, and market entry.

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