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Last Updated: December 11, 2025

ARALEN HYDROCHLORIDE Drug Patent Profile


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Which patents cover Aralen Hydrochloride, and what generic alternatives are available?

Aralen Hydrochloride is a drug marketed by Sanofi Aventis Us and is included in one NDA.

The generic ingredient in ARALEN HYDROCHLORIDE is chloroquine hydrochloride. There are twenty drug master file entries for this compound. Additional details are available on the chloroquine hydrochloride profile page.

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Summary for ARALEN HYDROCHLORIDE
Drug patent expirations by year for ARALEN HYDROCHLORIDE
Recent Clinical Trials for ARALEN HYDROCHLORIDE

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SponsorPhase
Liverpool School of Tropical MedicinePhase 4
Translational Genomics Research InstitutePhase 1
HonorHealth Research InstitutePhase 1

See all ARALEN HYDROCHLORIDE clinical trials

US Patents and Regulatory Information for ARALEN HYDROCHLORIDE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sanofi Aventis Us ARALEN HYDROCHLORIDE chloroquine hydrochloride INJECTABLE;INJECTION 006002-002 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for ARALEN HYDROCHLORIDE

Last updated: July 28, 2025


Introduction

Aralen Hydrochloride, the hydrochloride salt form of Chloroquine, is an antimalarial drug with a long-standing history in global healthcare. Initially introduced in the 1940s by Sanofi-Aventis (formerly Rhone Poulenc), it gained prominence for malaria treatment and prophylaxis. Recent shifts in market dynamics, driven by Emerging Infectious Diseases and new therapeutic indications, significantly influence its financial trajectory. This analysis dissects key market factors, regulatory landscape, competitive forces, and financial outlook pertaining to Aralen Hydrochloride.


Historical Context and Market Adoption

Aralen Hydrochloride has been pivotal in combating malaria, especially in endemic regions such as Sub-Saharan Africa and Southeast Asia. Its affordability and widespread distribution have cemented its role in global health initiatives. Notably, during the COVID-19 pandemic, Aralen gained temporary prominence as a potential treatment candidate, boosting sales and awareness despite limited clinical efficacy.

Market Drivers

  • Malaria Pharmacotherapy: Malaria remains a significant health burden, with WHO estimating over 200 million cases annually [1]. The continued reliance on chloroquine-based therapies for resistant strains in specific regions underpins sustained demand for Aralen.

  • Emerging Indications: Recent research explores off-label uses, including autoimmune conditions like rheumatoid arthritis and lupus, due to its immunomodulatory effects. These new indications could expand its market beyond traditional malaria treatment, contingent on positive clinical outcomes and regulatory approval.

  • Global Public Health Initiatives: Funding from global health agencies such as WHO and the Global Fund sustains the production and distribution of antimalarial drugs, including Aralen. However, affordability pressures and competition from newer antimalarial agents influence its market penetration.


Market Challenges and Competitive Landscape

  • Drug Resistance: Widespread resistance to chloroquine in Plasmodium falciparum strains has led to declining usage in some regions. The emergence of artemisinin-based combination therapies (ACTs) has displaced chloroquine in many areas, diminishing Aralen’s role.

  • Regulatory and Safety Concerns: Concerns over retinopathy and cardiotoxicity at higher doses have led to reevaluation of its safety profile, impacting prescribing practices and regulatory approval for new indications.

  • Market Competition: The landscape features competitors such as mefloquine, piperaquine, and newer agents like tafenoquine. While Aralen remains inexpensive, patent and formulation competition also influence market share.

Regulatory Status and Geographic Variability

  • Approvals and Restrictions: Aralen retains approval for malaria treatment in many countries. However, regulatory bodies in Europe, the U.S., and other jurisdictions apply strict safety criteria, limiting its indications and usage.

  • Patent and Licensing Dynamics: The drug largely operates under generic status, with Sanofi-Aventis and other manufacturers producing it. Lack of patent protection constrains R&D investment and cost recovery, but also keeps prices low, affecting revenue projections.

Financial Trajectory and Revenue Outlook

  • Historical Revenue Trends: Global sales for Aralen have historically been modest, primarily driven by endemic region demands. The COVID-19 pandemic temporarily boosted interest, yet the long-term financial gain remains limited.

  • Projected Future Revenue: Several factors influence projections:

    • Declining demand in malaria-endemic regions due to resistance and alternative therapies.
    • Potential expansion into autoimmune indications, contingent on clinical trial success.
    • Manufacturing costs and economies of scale favor low pricing models, constraining profit margins.

Estimates suggest revenue stabilization at low to mid-double-digit millions globally, with potential for growth if new indications gain regulatory approval and market acceptance.

Strategic Considerations

  • R&D Investments: Enhancing safety profiles and exploring novel therapeutic uses could revitalize its market relevance.

  • Partnerships and Licensing: Collaborations with global health organizations and biotech firms could enable wider distribution and access programs, especially in resource-limited settings.

  • Regulatory Navigation: Streamlining approval processes for new indications by leveraging orphan drug designations and accelerated pathways could provide financial leverage.


Conclusion

Aralen Hydrochloride’s market is characterized by long-standing demand in antimalarial therapy, tempered by resistance challenges, safety concerns, and evolving treatment paradigms. Its financial path remains modest, with opportunities rooted in expanding therapeutic indications and global health initiatives. Strategic R&D and regulatory engagement are critical to unlocking potential growth.


Key Takeaways

  • The global demand for Aralen Hydrochloride hinges on malaria prevalence, resistance trends, and the efficacy of alternative therapies such as ACTs.
  • Resistance to chloroquine has significantly curtailed its use, especially in regions where more effective treatments are available.
  • Although COVID-19 temporarily increased visibility, no sustained revenue impact is expected without new indications.
  • Safety concerns and regulatory restrictions limit expansion into new therapeutic areas, impacting long-term profitability.
  • Strategic alliances and regulatory pathways could foster modest growth, particularly if new indications are approved.

FAQs

1. Is Aralen Hydrochloride still effective against malaria?
Yes, it remains effective against certain strains of malaria in regions where resistance is minimal. However, resistance has led to decreased use in areas with widespread chloroquine resistance.

2. What are the primary safety concerns associated with Aralen Hydrochloride?
Retinopathy and cardiotoxicity, especially at high doses, are the main safety issues that influence prescribing practices and regulatory decisions.

3. Are there new therapeutic indications for Aralen Hydrochloride?
Research explores its use for autoimmune diseases like lupus and rheumatoid arthritis. Approval depends on clinical trial outcomes and regulatory review.

4. How does resistance impact the financial prospects of Aralen Hydrochloride?
Resistance diminishes demand in key markets, limiting revenue growth and profitability, especially in regions where newer antimalarials are preferred.

5. What is the future outlook for Aralen Hydrochloride’s market?
Market prospects remain modest unless new indications receive approval, and resistance issues are addressed through innovative formulations or combination therapies.


References

[1] World Health Organization. World Malaria Report 2022.

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