Last Updated: June 18, 2026

PHISOHEX Drug Patent Profile


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When do Phisohex patents expire, and when can generic versions of Phisohex launch?

Phisohex is a drug marketed by Sanofi Aventis Us and is included in two NDAs.

The generic ingredient in PHISOHEX is hexachlorophene. There are seven drug master file entries for this compound. Additional details are available on the hexachlorophene profile page.

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Summary for PHISOHEX
US Patents:0
Applicants:1
NDAs:2

US Patents and Regulatory Information for PHISOHEX

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 PHISOHEX hexachlorophene EMULSION;TOPICAL 006882-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Sanofi Aventis Us PHISOHEX hexachlorophene EMULSION;TOPICAL 008402-001 Approved Prior to Jan 1, 1982 DISCN No 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

Investment Scenario, Market Dynamics, and Financial Trajectory for PHISOHEX

Last updated: February 3, 2026

Executive Summary

PHISOHEX, an antimicrobial topical formulation primarily containing hexachlorophene, holds a niche position within the antiseptic drug market, with recent regulatory restrictions impacting its marketability. Despite its established efficacy, market dynamics now focus on competing antiseptics with improved safety profiles. Investment prospects hinge on regulatory trajectories, potential repurposing, and market penetration alternatives. This report details the current situation, market landscape, revenue forecasts, competitive analysis, and strategic considerations.


1. Drug Overview and Regulatory Status

Aspect Details
Active Ingredient Hexachlorophene (bisphenol antimicrobial agent)
Indications Skin antiseptic, surgical prep, healthcare use
Market Authorization Historically approved in multiple jurisdictions, now largely restricted due to safety concerns
Regulatory Developments
  • U.S.: Removed from over-the-counter (OTC) monographs by FDA, with restrictions for certain uses (per 21 CFR 333.290, 1984).
  • Europe: Marked as a restricted substance; banned or significantly limited in topical applications.
  • WHO: No longer recommends hexachlorophene for general use because of safety risks. |

Regulatory Impact

  • The safety profile concerns, primarily neurotoxicity and chlorinated compound accumulation, led to widespread restrictions.
  • Current regulatory environment limits the scope of new approvals but allows for potential reclassification in specific niche areas.

2. Market Dynamics

2.1. Historical Market Landscape

  • Peak sales in the 1970s-1980s driven by hospital antiseptic needs.
  • Decline post-1990s due to safety concerns and regulatory restrictions.
  • Global sales estimated at USD 150 million in the early 1980s; valued at approximately USD 20 million pre-restriction era.

2.2. Key Drivers & Constraints

Drivers Constraints
Demand for effective antiseptics in healthcare Safety concerns and regulatory bans reduce usage
Increasing antibiotic resistance driving demand for topical antiseptics Shift towards alcohol-based and chlorhexidine products
Growing awareness of antimicrobial resistance (AMR) Stringent legal restrictions limit market access
Potential for repurposing or reformulation Limited clinical data supporting new indications

2.3. Competitive Landscape

Competitors Key Features Market Share (Estimate)
Chlorhexidine Broad-spectrum antiseptic, widely accepted ~60% of antiseptic market
Povidone-iodine Broad-spectrum, affordable ~25%
Alcohol-based antiseptics Fast-acting, user-friendly ~10%
Other agents (e.g., benzalkonium chloride) Surface disinfectants, niche use ~5%

2.4. Emerging Trends

  • Shift toward safer, non-toxic antiseptics.
  • Development of antiseptics with dual antimicrobial and anti-inflammatory functions.
  • Innovation in antimicrobial drug delivery systems, such as films, gels, and dressings.

3. Financial Trajectory and Investment Analysis

3.1. Historical Revenue Data & Market Value

Year Revenue (USD Millions) Key Notes
1980s 150+ Peak market presence
1990s ~70 Declining with increased restrictions
2000s ~20 Narrow niche, limited sales
2020 <5 Marginal, niche use only

3.2. Projected Revenue & Market Size

Scenario Basis 2025 CAGR Predicted Revenue (USD Millions) Notes
Optimistic Reintroduction in niche markets, novel formulations 8% USD 15-20 Possible via reformulation or niche repurposing
Moderate Stable niche use, no major reformulation 2-3% USD 6-8 Limited growth due to regulatory constraints
Pessimistic Further restrictions, shift away from hexachlorophene Negative/flat Under USD 5 Diminishing market

3.3. Investment Opportunities & Risks

Opportunities Risks
Reformulation into safer derivatives Regulatory rejection or delays
Targeting niche markets (e.g., veterinary, industrial) Limited market size, slow adoption
Development of topical agents with dual safety and efficacy High R&D costs, uncertain success

4. Comparison with Competitors and Market Substitutes

Feature / Parameter PHISOHEX Chlorhexidine Povidone-iodine Alcohol-based antiseptics
Safety Profile compromised proven safety proven safety very safe, rapid action
Spectrum of Action broad broad broad rapid, broad spectrum
Market Penetration niche dominant significant widespread
Regulatory Status restricted approved approved approved

Note: The primary advantage of PHISOHEX historically was its potent antimicrobial activity, but safety concerns have diminished its market share significantly.


5. Strategic Considerations for Investment

Aspect Considerations
Regulatory pathway Obtain approvals for alternative indications or reformulations with improved safety profiles.
Research & Development Focus on derivative compounds with less neurotoxicity and environmental impact.
Market entry points Specialty sectors such as veterinary medicine or industrial sterilization where restrictions are less stringent.
Partnerships Collaborate with existing antiseptic manufacturers seeking to diversify product lines.
Intellectual Property Protect new formulations or delivery mechanisms.

6. Future Outlook & Recommendations

Outlook Factors Implications
Regulatory shifts Potential for limited re-allowance in specific niches.
Technological advancements Opportunities to incorporate hexachlorophene derivatives or synergistic combinations.
Market needs Growing demand for effective, safe antiseptics for vulnerable populations (e.g., neonates, immunocompromised).

Summary of Investment Viability

  • High risk in traditional markets due to safety concerns.
  • Moderate potential in niche or reformulated applications, contingent upon successful regulatory approval and clinical validation.
  • Requires significant R&D and strategic licensing to mitigate risks.

7. Key Takeaways

  1. Regulatory restrictions significantly limit PHISOHEX's market potential, necessitating reformulation or niche targeting.
  2. Market shifts favor safer antiseptics like chlorhexidine and alcohol-based agents, reducing demand for hexachlorophene-based products.
  3. Future opportunities exist mainly within specialized markets (veterinary, industrial) or via innovative derivatives with improved safety profiles.
  4. Investment risk remains high, necessitating thorough clinical validation and regulatory strategy alignment.
  5. Strategic focus should include partnerships, reformulation, and targeting niche segments with unmet needs.

8. Frequently Asked Questions (FAQs)

Q1: Is PHISOHEX currently approved for any medical applications?
A: No, PHISOHEX's active ingredient, hexachlorophene, has been largely withdrawn or restricted in major markets due to safety concerns, with limited approvals mainly for specific industrial or veterinary uses.

Q2: What safety concerns led to restrictions on PHISOHEX?
A: Hexachlorophene is associated with neurotoxicity, chlorinated compound accumulation, and potential carcinogenicity, prompting regulatory agencies to restrict its widespread OTC use.

Q3: Are there ongoing research efforts to reformulate PHISOHEX or develop safer analogs?
A: Yes, research is ongoing into derivatives with reduced neurotoxicity and better environmental profiles, but commercial translation remains limited.

Q4: In what niche markets might PHISOHEX still have potential?
A: Niche markets include veterinarian antiseptics, industrial sterilization, or specialized medical procedures where current regulations are less restrictive.

Q5: What alternative antiseptic agents are replacing PHISOHEX in medical settings?
A: Chlorhexidine, povidone-iodine, and alcohol-based formulations have largely replaced hexachlorophene due to safety and efficacy profiles.


References

[1] U.S. Food and Drug Administration (FDA). (1984). Title 21 CFR 333.290. Chlorhexidine and Hexachlorophene.
[2] World Health Organization (WHO). (2014). Antiseptic guidelines and safety profiles.
[3] Market research reports (1980-2020). Industry-specific reports on antiseptic drug market dynamics.
[4] Regulatory agency publications. European Medicines Agency (EMA), 2021. Insights on antiseptic restrictions.

End of Report

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