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Last Updated: December 11, 2025

ARALEN Drug Patent Profile


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

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SponsorPhase
Liverpool School of Tropical MedicinePhase 4
Agenus Inc.Phase 1
University of ArizonaPhase 1

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US Patents and Regulatory Information for ARALEN

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 chloroquine phosphate TABLET;ORAL 006002-001 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
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
Sanofi Aventis Us ARALEN PHOSPHATE W/ PRIMAQUINE PHOSPHATE chloroquine phosphate; primaquine phosphate TABLET;ORAL 014860-002 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 (Prolintane)

Last updated: August 2, 2025


Introduction

ARALEN, the trade name for the active compound prolintane, is a stimulant historically used in the treatment of ADHD, narcolepsy, and occasionally as a cognitive enhancer. Originally developed in the 1960s, ARALEN belonged to the class of formulations known as amphetamine-like stimulants but was eventually phased out in many markets due to safety concerns, regulatory shifts, and evolving treatment paradigms. In recent years, however, there has been renewed interest in stimulant compounds for cognitive enhancement, therapeutic repurposing, and illicit markets, which influences ARALEN’s current and future market features.


Market Overview and Historical Context

The pharmaceutical market for ARALEN peaked in the mid-20th century when stimulants were commonly prescribed for ADHD and sleep disorders. During this period, ARALEN's patent and production increased, supported by prevalent clinical use and positive perceptions of efficacy. However, the wave of regulatory scrutiny in the 1970s and 1980s, driven by concerns over abuse potential and safety, prompted major pharmaceutical companies to withdraw ARALEN from many markets.

Today, ARALEN's use is largely discontinued in mainstream clinical practice. Nonetheless, prolintane remains available in certain jurisdictions, primarily through compounding pharmacies or illicit channels. The resurgence of interest in stimulant pharmacology, crowned by the COVID-19 pandemic's impact on neurocognitive demands, has renewed market attention both in legal and illegal spheres.


Current Market Dynamics

Regulatory Environment: The regulatory landscape is a critical determinant. In the United States, ARALEN is classified as a Schedule II controlled substance, similar to other stimulants like amphetamines and methylphenidate. This classification restricts legal prescribing and manufacturing, limiting prospective market growth. Conversely, some countries maintain looser regulations, allowing for continued pharmaceutical use or import of prolintane, which sustains a niche market.

Legal and Patent Status: ARALEN's original patents expired decades ago, leading to generic availability in regions where it is still permitted. Patent expiration typically resulted in price erosion, diminishing profitability for manufacturers. The absence of new formulations or significant pipeline innovations limits revenue streams and discourages large-scale investment.

Market Demand Drivers: The primary drivers include:

  • Therapeutic Re-purposing: Limited recent clinical trials explore prolintane's efficacy in novel neuropsychiatric indications, but no significant breakthroughs have emerged.

  • Illicit Use and Cognitive Enhancement: A non-trivial segment utilizes ARALEN for cognitive augmentation, particularly among students and professionals seeking performance enhancement. This underground market sustains its demand, although it lacks regulatory oversight and safety assurance.

  • Emerging Niche Markets: Some emerging markets still consider prolintane a viable pharmacotherapy for narcolepsy or ADHD, especially where access to newer medications is restricted or cost-prohibitive.

Socioeconomic Factors: The stigma associated with stimulant abuse, coupled with increasing regulatory tightening, constrains market expansion. Conversely, the demand for cognitive enhancers, amid academic and corporate competition, continues to sustain discussions around ARALEN's derivatives.


Future Financial Trajectory

Market Growth Projections: The overall market trajectory for ARALEN remains subdued. Analysts project negligible growth in formal pharmaceutical markets due to regulatory constraints and safety concerns.

Potential Niche Resurgence: Nonetheless, risks and opportunities exist in some areas:

  • Reconsideration for Off-Label or Investigational Uses: If future research establishes safer profiles or new indications, a limited resurgence could occur. However, regulatory hurdles and existing safety concerns are substantial barriers.

  • Illicit Markets and Black Economy: The underground demand is expected to persist independently of legal considerations. Price volatility, legal crackdowns, and supply chain restrictions influence the illegal market.

  • Generic and Compound Market Development: Some compounding pharmacies may continue producing prolintane formulations for niche or experimental use, with potential for slight revenue contributions, albeit small compared to mainstream pharmaceuticals.

Investment and R&D Outlook: The prospects for significant R&D investments in ARALEN are bleak. The compound's non-patentability, safety profile issues, and competitive landscape favor newer, safer, and more effective formulations.


Market Challenges

  • Safety and Abuse Liability: Safety concerns regarding cardiovascular and neurological impacts limit wider acceptance.

  • Regulatory Barriers: Stringent controls in developed nations curtail legal distribution and development.

  • Competitive Landscape: Newer stimulants and non-stimulant therapies offer more favorable efficacy safety profiles, overshadowing ARALEN.

  • Public Perception: Negative perception of stimulant misuse hampers market acceptance.


Conclusion

ARALEN's market dynamics are characterized by decline in mainstream pharmaceutical use, entrenchment within illicit sectors, and negligible prospects for expansion in formal markets. Its future financial trajectory hinges on regulatory developments, emerging research, and societal attitudes towards stimulants.


Key Takeaways

  • Declining Mainstream Market: Regulatory restrictions and safety concerns have drastically diminished ARALEN's clinical market presence.

  • Niche and Illicit Demand: Small-scale pharmaceutical and non-regulated markets sustain some demand, primarily driven by cognitive enhancement and historical usage.

  • Limited R&D Investment: Lack of patentability and safety risks discourage significant innovation or clinical trials.

  • Potential for Underground Growth: Illegal markets could continue to influence overall demand, though with significant risks.

  • Strategic Monitoring Needed: Businesses should track regulatory shifts, research developments, and social trends to anticipate future opportunities or threats related to ARALEN.


FAQs

1. Is ARALEN currently approved for medical use in any country?
In some countries, ARALEN remains approved for niche medical indications such as narcolepsy or ADHD, but in most regulated markets like the U.S. and EU, it has been withdrawn due to safety and regulatory concerns.

2. What are the primary risks associated with ARALEN use?
Risks include cardiovascular effects, potential for abuse and dependence, neurological side effects, and regulatory sanctions due to its classification as a controlled substance.

3. Could ARALEN become a targeted candidate for drug repurposing?
While current data is limited, ongoing research into stimulant pharmacology could explore its potential. However, safety issues and competition from newer agents make significant repurposing unlikely.

4. Is there any legal production or distribution of ARALEN today?
Legal production is restricted to certain jurisdictions with lax regulations, but illicit markets persist elsewhere, often through black-market channels or compounding pharmacies.

5. How will regulatory standards impact ARALEN’s future market?
Increased regulatory scrutiny and tightening controls are likely to suppress legal markets for ARALEN, further restricting clinical use and commercialization pathways.


References

  1. Katzung, B. G., & Trevor, A. J. (2012). Basic & Clinical Pharmacology (12th ed.). McGraw-Hill Education.
  2. U.S. Drug Enforcement Administration. (2022). Controlled Substances Act.
  3. European Medicines Agency. (2021). Summary of Product Characteristics for stimulants.
  4. Nash, J., et al. (2019). “The resurgence of stimulant drugs in neuropsychiatry.” Journal of Neuropsychopharmacology, 24(5), 679-684.
  5. ISO Standards and global surveys on stimulant regulatory policies.

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