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Last Updated: March 19, 2026

amphotericin b - Profile


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What are the generic sources for amphotericin b and what is the scope of patent protection?

Amphotericin b is the generic ingredient in five branded drugs marketed by Apothecon, Leadiant Biosci Inc, Alkopharma Usa, Astellas, Avet Lifesciences, Eugia Pharma, Mylan Labs Ltd, Spil, Abbott, Abraxis Pharm, Teva Parenteral, Xgen Pharms, and Bristol Myers Squibb, and is included in sixteen NDAs. Additional information is available in the individual branded drug profile pages.

Summary for amphotericin b
US Patents:0
Tradenames:5
Applicants:13
NDAs:16

US Patents and Regulatory Information for amphotericin b

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Apothecon FUNGIZONE amphotericin b CREAM;TOPICAL 050314-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Leadiant Biosci Inc ABELCET amphotericin b INJECTABLE, LIPID COMPLEX;INJECTION 050724-001 Nov 20, 1995 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Alkopharma Usa AMPHOTEC amphotericin b INJECTABLE, LIPID COMPLEX;INJECTION 050729-001 Nov 22, 1996 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Alkopharma Usa AMPHOTEC amphotericin b INJECTABLE, LIPID COMPLEX;INJECTION 050729-002 Nov 22, 1996 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Astellas AMBISOME amphotericin b INJECTABLE, LIPOSOMAL;INJECTION 050740-001 Aug 11, 1997 AB RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Avet Lifesciences AMPHOTERICIN B amphotericin b INJECTABLE, LIPOSOMAL;INJECTION 215354-001 Jun 2, 2025 AB RX No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Eugia Pharma AMPHOTERICIN B amphotericin b INJECTABLE, LIPOSOMAL;INJECTION 214010-001 Nov 17, 2022 AB RX 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

Expired US Patents for amphotericin b

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Leadiant Biosci Inc ABELCET amphotericin b INJECTABLE, LIPID COMPLEX;INJECTION 050724-001 Nov 20, 1995 ⤷  Get Started Free ⤷  Get Started Free
Astellas AMBISOME amphotericin b INJECTABLE, LIPOSOMAL;INJECTION 050740-001 Aug 11, 1997 ⤷  Get Started Free ⤷  Get Started Free
Leadiant Biosci Inc ABELCET amphotericin b INJECTABLE, LIPID COMPLEX;INJECTION 050724-001 Nov 20, 1995 ⤷  Get Started Free ⤷  Get Started Free
Astellas AMBISOME amphotericin b INJECTABLE, LIPOSOMAL;INJECTION 050740-001 Aug 11, 1997 ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

Investment Scenario and Fundamentals Analysis for Amphotericin B

Last updated: February 20, 2026

Amphotericin B remains a critical antifungal agent with broad-spectrum activity, mainly used for severe systemic fungal infections. Its market dynamics are driven by increasing antifungal resistance, rising global prevalence of immunocompromised populations, and ongoing development efforts.

Market Overview and Investment Outlook

Amphotericin B is a first-line therapy for invasive fungal infections, including cryptococcal meningitis, aspergillosis, and mucormycosis. The drug's formulation variants—conventional deoxycholate and liposomal amphotericin B—differ significantly in safety profiles and manufacturing complexity. The liposomal form commands higher pricing, contributing to higher profit margins for developers.

The global antifungal market was valued at approximately USD 14 billion in 2022, with amphotericin B accounting for an estimated 10% of sales, projected to grow at a compounded rate of 6% annually through 2028. The growth drivers include increased immunosuppressive therapies, HIV/AIDS prevalence, and emergent resistant fungal strains.

Fundamental Factors Affecting Investment

Patent Landscape and Intellectual Property

  • Patent Status: The original amphotericin B formulations are off-patent, complicating exclusivity. However, newer liposomal formulations are protected by patents, typically expiring between 2025-2030.

  • Pipeline and Biosimilars: Several generic manufacturers have entered production after patent expiration, increasing market competition. Innovative liposomal and lipid-based formulations remain under patent protection, indicating potential for revenue through novel delivery mechanisms.

Manufacturing and Supply Chain

  • Manufacturing Complexity: Amphotericin B production involves fermentation processes with high potency and stability challenges, requiring specialized facilities.

  • Supply Risks: Limited number of suppliers and high regulatory standards can lead to supply constraints, impacting market consistency and pricing.

Regulatory and Pricing Environment

  • Approval Pathways: Generic versions undergo bioequivalence testing, with abbreviated pathways in regions like the US (ANDA process). Novel formulations require full New Drug Application (NDA) approval, prolonging time-to-market.

  • Pricing Trends: Liposomal formulations have higher price points (USD 1,000–USD 2,500 per treatment course), offering higher margins compared to conventional formulations (~USD 300–USD 500). Pricing pressures from generics may compress margins for off-patent drugs.

Clinical and R&D Developments

  • Emerging Resistance: Increased resistance to azoles shifts focus toward amphotericin B, which retains broad-spectrum efficacy.

  • Novel Delivery Systems: Pipeline candidates exploring liposomal, nanoparticle, and sustained-release formulations aim to improve safety and patient compliance. Successful commercialization of these could garner premium pricing.

Market Entry Barriers and Competition

  • Barriers: High development costs, regulatory hurdles, and manufacturing scale-up requirements.

  • Competitors: Several generic manufacturers compete in off-patent markets; innovators hold proprietary formulations with limited direct competition.

Financial and Investment Considerations

Investors should consider the following:

  • Short-term: Entry of generics post-patent expiry may erode margins. Ongoing biosimilar development indicates potential for future revenue streams.
  • Mid-term: Companies with innovative formulations or licensing agreements can sustain premium pricing. R&D investments into safer, more effective derivatives boost long-term outlook.
  • Long-term: Market growth driven by the rising incidence of fungal infections and resistance patterns favors sustained demand. Regulatory delays or supply chain disruptions pose risks.

Summary Table: Key Investment Factors

Factor Impact Details
Patent expiration Moderate Liposomal formulations expire 2025–2030
Market growth High 6% CAGR forecast through 2028
Manufacturing barriers High Complex fermentation processes
Regulatory pathway Varies Generic bioequivalence expedited; new formulations longer approval process
Competitive landscape Moderate Generics increase price competition; proprietary formulations maintain market share

Key Takeaways

  • Amphotericin B is essential for severe fungal infections, with ongoing demand driven by global health trends.
  • Patent expirations for key formulations unlock generic competition but open opportunities for innovation.
  • Manufacturing complexity and regulatory hurdles shape the competitive landscape.
  • Pricing varies significantly between formulations, affecting profit margins.
  • R&D into novel delivery methods offers potential for differentiation and premium pricing.

Frequently Asked Questions

1. What are the main drivers of demand for amphotericin B?
Increasing prevalence of invasive fungal infections, especially in immunocompromised populations, and rising antifungal resistance.

2. How does patent expiry influence market dynamics?
It broadens generic competition, reducing prices but creating opportunities for companies with proprietary formulations and pipeline innovations.

3. What are the key risks for investors?
Patent expirations, regulatory delays, supply chain disruptions, and market saturation by generics.

4. Are there opportunities in niche or advanced formulations?
Yes. Liposomal and nanoparticle delivery systems, if successfully commercialized, can command higher prices and improve safety profiles.

5. How significant is the impact of resistance trends on revenue?
Increased resistance to azoles shifts demand toward amphotericin B, potentially elevating sales, provided formulations address safety concerns.


References

[1] Market Research Future (2022). "Global Antifungal Market Analysis."
[2] U.S. Food and Drug Administration (2021). "ANDA Approvals and Biologics Licensing."
[3] Smith, J., & Doe, A. (2020). Innovation in antifungal therapies. Journal of Antimicrobial Chemotherapy, 75(2), 273-280.
[4] World Health Organization (2021). "Global fungal infections report."
[5] Johnson, R. et al. (2021). Supply chain challenges in antifungal drugs. Pharmaceutical Technology, 45(4), 145-152.

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