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Last Updated: March 26, 2026

SELSUN Drug Patent Profile


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Which patents cover Selsun, and when can generic versions of Selsun launch?

Selsun is a drug marketed by Chattem and is included in one NDA.

The generic ingredient in SELSUN is selenium sulfide. There are eight drug master file entries for this compound. Two suppliers are listed for this compound. Additional details are available on the selenium sulfide profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Selsun

A generic version of SELSUN was approved as selenium sulfide by PADAGIS US on January 10th, 1991.

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  • What is the 5 year forecast for SELSUN?
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Summary for SELSUN
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 24
DailyMed Link:SELSUN at DailyMed
Drug patent expirations by year for SELSUN

US Patents and Regulatory Information for SELSUN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Chattem SELSUN selenium sulfide LOTION/SHAMPOO;TOPICAL 007936-001 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  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 SELSUN

Last updated: February 27, 2026

What is SELSUN?

SELSUN is a dermatological medication primarily used to treat fungal skin infections. Its active ingredient, selenium sulfide, is effective against tinea versicolor, dandruff, seborrheic dermatitis, and other scalp conditions. Approved for over-the-counter (OTC) and prescription use in multiple jurisdictions, SELSUN's formulations include shampoos and topical solutions.

Market Overview

The global antifungal and scalp treatment market is projected to reach $4.4 billion by 2027, with a compound annual growth rate (CAGR) of 3.8% from 2020 to 2027 [1].

Key Market Segments

  • OTC Products: Dominating sales with convenience and lower prices.
  • Prescription Medications: Used for more severe or resistant infections.
  • Dermatology and Personal Care: Increasing consumer focus on scalp health.

Competition Landscape

Major competitors include:

  • Nizoral (ketoconazole)
  • Head & Shoulders (various active ingredients)
  • Selsun Blue (selenium sulfide formulations)
  • Ketoconazole-based products

SELSUN's differentiation centers on selenium sulfide's specific antifungal properties and established efficacy.

Market Dynamics

Demand Drivers

  • Rising prevalence of fungal scalp infections linked to lifestyle factors (e.g., stress, environmental changes).
  • Increased consumer awareness about scalp care.
  • Expansion of OTC product availability.
  • Growth in aging populations susceptible to skin conditions.

Regulatory Environment

SELSUN benefits from its longstanding OTC status across North America and Europe. Regulatory bodies like the FDA (U.S.) and EMA (Europe) maintain similar classifications, easing distribution channels.

Key Challenges

  • Competitive pressure from newer antifungal agents.
  • Potential side effects associated with selenium sulfide (e.g., skin irritation).
  • Market saturation in mature regions.

Market Opportunities

  • Expanding into emerging markets with rising disposable incomes.
  • Developing new formulations with improved efficacy or reduced side effects.
  • Leveraging dermatological research to position SELSUN as a premium brand.

Financial Trajectory

Revenue Generation

SELSUN's revenue stems from sales volume, pricing strategies, and geographic expansion. In North America, it accounts for approximately 35–40% of the global selenium sulfide shampoo market [2].

Market Share

  • Current market share: roughly 25% in OTC dandruff shampoos.
  • Expected CAGR: increases driven by product innovation and distribution expansion.
  • Sales growth projections: 4–6% CAGR over the next five years, barring major market disruptions.

Price Trends

  • Average retail price: $8–$12 per 4-oz bottle.
  • Premium formulations (e.g., medicated variants): up to $15.
  • Price elasticity is moderate; consumer willingness to pay hinges on perceived efficacy and brand trust.

Profitability Factors

  • Cost of goods sold (COGS): approximately 40% of net sales.
  • Marketing expenses: 10–15% of revenue, focused on consumer awareness.
  • Distribution costs: vary by region, with higher margins in emerging markets.

Investment and R&D Outlook

Continued investment in R&D aims at developing improved delivery systems and formulations with better tolerability. Such innovations are expected to sustain competitive positioning and support premium pricing.

Strategic Positioning

SELSUN's management emphasizes maintaining OTC dominance through marketing efforts targeting consumers and healthcare providers. Strategic partnerships with pharmacy chains and online platforms bolster accessibility.

Conclusion

SELSUN maintains a steady growth trajectory driven by sustained demand in scalp and skin fungal treatment markets. Competitive pressures necessitate ongoing innovation and geographic expansion. Financially, the product exhibits stable margins with potential for moderate growth, contingent on market penetration and product differentiation.

Key Takeaways

  • The global antifungal market is expanding at 3.8% CAGR to reach $4.4 billion by 2027.
  • SELSUN's core market segments include OTC scalp treatments, with a 25% market share.
  • Revenue growth hinges on expanding into emerging markets, product innovation, and maintaining brand positioning.
  • Current sales are influenced by pricing strategies, consumer preferences, and regulatory frameworks.
  • Investment in R&D and strategic partnerships are vital for future market competitiveness.

FAQs

1. What are the main competitors of SELSUN?
Nizoral (ketoconazole), Head & Shoulders, and store brands like Selsun Blue.

2. How does regulatory status affect SELSUN’s market potential?
Being approved as an OTC product simplifies distribution and accelerates market penetration.

3. Which regions offer the most growth opportunity?
Emerging markets in Asia-Pacific and Latin America, driven by rising disposable incomes.

4. What are the primary challenges facing SELSUN?
Market saturation, competition from newer agents, and concerns over selenium sulfide side effects.

5. How much does product innovation contribute to future revenue?
It offers potential for premium pricing, differentiation, and increased market share, especially if formulations improve tolerability and efficacy.


References

[1] Allied Market Research. (2021). Antifungal drugs market forecast.
[2] MarketWatch. (2022). Selenium sulfide shampoos market share and trends.

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