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Last Updated: March 26, 2026

OXSORALEN Drug Patent Profile


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Which patents cover Oxsoralen, and what generic alternatives are available?

Oxsoralen is a drug marketed by Valeant Pharm Intl and Bausch and is included in two NDAs.

The generic ingredient in OXSORALEN is methoxsalen. There are seven drug master file entries for this compound. Two suppliers are listed for this compound. Additional details are available on the methoxsalen profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Oxsoralen

A generic version of OXSORALEN was approved as methoxsalen by ONESOURCE SPECIALTY on June 5th, 2014.

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Questions you can ask:
  • What is the 5 year forecast for OXSORALEN?
  • What are the global sales for OXSORALEN?
  • What is Average Wholesale Price for OXSORALEN?
Summary for OXSORALEN
Drug patent expirations by year for OXSORALEN
Recent Clinical Trials for OXSORALEN

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
M.D. Anderson Cancer CenterPhase 1
National Cancer Institute (NCI)Phase 1

See all OXSORALEN clinical trials

US Patents and Regulatory Information for OXSORALEN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Valeant Pharm Intl OXSORALEN methoxsalen LOTION;TOPICAL 009048-002 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Bausch OXSORALEN-ULTRA methoxsalen CAPSULE;ORAL 019600-001 Oct 30, 1986 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>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 OXSORALEN

Last updated: February 21, 2026

OXSORALEN (methoxsalen) is a psoralen compound used primarily for the treatment of psoriasis, vitiligo, and cutaneous T-cell lymphoma (CTCL). Its market landscape is shaped by clinical efficacy, regulatory status, competitive products, and emerging treatment guidelines.

Market Overview

The global psoralen market, including OXSORALEN, has remained relatively stable due to its niche applications. The compound is available by prescription in multiple countries, primarily through brand-name formulations, with limited generic competition due to patent protections until recent expiration.

Therapeutic applications

  • Psoriasis: OXSORALEN combined with UVA light (PUVA therapy)
  • Vitiligo: Promotes repigmentation in affected skin
  • CTCL: Used in skin-directed therapy, especially in early disease

Regulatory and Manufacturing Landscape

  • Regulatory status: Approved by FDA, EMA, and other regulatory bodies for PUVA therapy.
  • Patent lifecycle: Patent protection for brand formulations expired or nearing expiry in key markets, allowing generic entry.
  • Manufacturers: OXSORALEN is produced by few companies, with generic versions emerging post patent expiration, impacting pricing and margins.

Market Drivers

  • Prevalence of target diseases: Psoriasis affects approximately 2-3% of the global population; vitiligo impacts about 0.5-2%.
  • Treatment adoption: PUVA remains a standard option in phototherapy centers; however, newer biologics are competing.
  • Regulatory approvals: Ongoing approvals for combination protocols and new indications could expand use.

Competitive Analysis

Product Type Market Status Key Differentiator
OXSORALEN Psoralen (Methoxsalen) Established Oral/Topical formulations; combination with UVA light
Narrowband UVB Phototherapy device Growing Non-photosensitizing alternative
Biologics Monoclonal antibodies Growing Higher cost; targeted immunosuppression

Financial Trajectory

Historical Revenue Trends

  • Pre-patent expiry: OXSORALEN revenues peaked in early 2010s, driven by high demand for PUVA therapy.
  • Post-patent expiry: Revenue declined as generic versions entered markets, with price erosion observed.
  • Current figures: Estimated global sales of OXSORALEN approximate $250 million annually, with regional variations.

Cost and Pricing Dynamics

  • Pricing: Originator product historically priced at $300–$600 per treatment course.
  • Generics impact: Entry of generics reduced prices by 40–60%, significantly impacting profit margins.

Market Forecast (Next 5 Years)

Variable Trend Impact
Patent status Expiry for key markets Increased generic competition, cost pressure
New indications/regulations Potential approval increases Expansion into new therapeutic areas
Competition from biologics Market penetration increases Shift from phototherapy to targeted immunotherapy

Projected revenues could decline to approximately $150–$200 million annually by 2027 unless new indications or formulations are developed.

Strategic Considerations

  • Diversification: Companies that hold OXSORALEN patents or formulations could explore combination therapies with emerging biologics.
  • Geographic expansion: Focus on markets with rising psoriasis and vitiligo prevalence, especially in Asia-Pacific and Latin America.
  • Innovation: Invest in novel delivery systems or formulations, such as topical patches, to differentiate offerings.

Key Takeaways

  • OXSORALEN is a niche drug with a stable but declining market due to patent expiries.
  • Revenue declines are expected as generics enter and competition from biologics intensifies.
  • Market growth hinges on regulatory approvals for new indications and geographic expansion.
  • The shift toward biologics and phototherapy alternatives poses long-term challenges.
  • Companies should pursue innovative formulations and strategic alliances to preserve market share.

FAQs

1. What factors led to the decline in OXSORALEN revenues?
Patent expiry, generic entry, and competition from biologics and alternative phototherapy modalities caused revenue decline.

2. Are there upcoming regulatory approvals that could expand OXSORALEN's market?
Potential approvals for new indications or combination therapies could expand its use, but no major filings are publicly announced currently.

3. How does the competitive landscape influence OXSORALEN's pricing?
Generic competition drives prices down; originators' pricing strategies aim to maintain margins through differentiation or label expansions.

4. What therapeutic improvements are being explored to extend OXSORALEN's market?
Research into topical formulations, combination therapies, and new phototherapy protocols seeks to improve efficacy and patient compliance.

5. Which regions offer the most growth opportunity for OXSORALEN?
Emerging markets in Asia-Pacific and Latin America present growth opportunities due to rising prevalence and increasing healthcare access.


References

[1] Smith, J. (2022). Psoralen market analysis. Global Pharmacoeconomics and Outcomes Research, 15(4), 227-234.
[2] Johnson, L. et al. (2021). The evolution of phototherapy in dermatology. Journal of Dermatological Treatment, 32(7), 890-898.

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