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Last Updated: December 12, 2025

Gramicidin; neomycin sulfate; polymyxin b sulfate - Generic Drug Details


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What are the generic sources for gramicidin; neomycin sulfate; polymyxin b sulfate and what is the scope of freedom to operate?

Gramicidin; neomycin sulfate; polymyxin b sulfate is the generic ingredient in four branded drugs marketed by Dow Pharm, Bausch And Lomb, Ipharm, Sciegen Pharms Inc, Watson Labs, Pharmafair, and Monarch Pharms, and is included in seven NDAs. Additional information is available in the individual branded drug profile pages.

Two suppliers are listed for this compound.

Summary for gramicidin; neomycin sulfate; polymyxin b sulfate
Recent Clinical Trials for gramicidin; neomycin sulfate; polymyxin b sulfate

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

SponsorPhase
Chulalongkorn UniversityPhase 3

See all gramicidin; neomycin sulfate; polymyxin b sulfate clinical trials

Pharmacology for gramicidin; neomycin sulfate; polymyxin b sulfate
Anatomical Therapeutic Chemical (ATC) Classes for gramicidin; neomycin sulfate; polymyxin b sulfate
A01AB Antiinfectives and antiseptics for local oral treatment
A01A STOMATOLOGICAL PREPARATIONS
A01 STOMATOLOGICAL PREPARATIONS
A Alimentary tract and metabolism
A07AA Antibiotics
A07A INTESTINAL ANTIINFECTIVES
A07 ANTIDIARRHEALS, INTESTINAL ANTIINFLAMMATORY/ANTIINFECTIVE AGENTS
A Alimentary tract and metabolism
A07AA Antibiotics
A07A INTESTINAL ANTIINFECTIVES
A07 ANTIDIARRHEALS, INTESTINAL ANTIINFLAMMATORY/ANTIINFECTIVE AGENTS
A Alimentary tract and metabolism
B05CA Antiinfectives
B05C IRRIGATING SOLUTIONS
B05 BLOOD SUBSTITUTES AND PERFUSION SOLUTIONS
B Blood and blood forming organs
D06AX Other antibiotics for topical use
D06A ANTIBIOTICS FOR TOPICAL USE
D06 ANTIBIOTICS AND CHEMOTHERAPEUTICS FOR DERMATOLOGICAL USE
D Dermatologicals
J01GB Other aminoglycosides
J01G AMINOGLYCOSIDE ANTIBACTERIALS
J01 ANTIBACTERIALS FOR SYSTEMIC USE
J Antiinfectives for systemic use
J01XB Polymyxins
J01X OTHER ANTIBACTERIALS
J01 ANTIBACTERIALS FOR SYSTEMIC USE
J Antiinfectives for systemic use
R02AB Antibiotics
R02A THROAT PREPARATIONS
R02 THROAT PREPARATIONS
R Respiratory system
R02AB Antibiotics
R02A THROAT PREPARATIONS
R02 THROAT PREPARATIONS
R Respiratory system
S01AA Antibiotics
S01A ANTIINFECTIVES
S01 OPHTHALMOLOGICALS
S Sensory organs
S01AA Antibiotics
S01A ANTIINFECTIVES
S01 OPHTHALMOLOGICALS
S Sensory organs
S02AA Antiinfectives
S02A ANTIINFECTIVES
S02 OTOLOGICALS
S Sensory organs
S02AA Antiinfectives
S02A ANTIINFECTIVES
S02 OTOLOGICALS
S Sensory organs
S03AA Antiinfectives
S03A ANTIINFECTIVES
S03 OPHTHALMOLOGICAL AND OTOLOGICAL PREPARATIONS
S Sensory organs
S03AA Antiinfectives
S03A ANTIINFECTIVES
S03 OPHTHALMOLOGICAL AND OTOLOGICAL PREPARATIONS
S Sensory organs

US Patents and Regulatory Information for gramicidin; neomycin sulfate; polymyxin b sulfate

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Pharmafair NEOMYCIN SULFATE AND POLYMYXIN B SULFATE GRAMICIDIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 062383-001 Aug 31, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Bausch And Lomb NEOMYCIN AND POLYMYXIN B SULFATES AND GRAMICIDIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 064047-001 Jan 31, 1996 AT RX No Yes ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Ipharm NEOMYCIN AND POLYMYXIN B SULFATES AND GRAMICIDIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 062818-001 Oct 11, 1988 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Dow Pharm NEO-POLYCIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 060427-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Sciegen Pharms Inc NEOMYCIN AND POLYMYXIN B SULFATES AND GRAMICIDIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 065187-001 Oct 28, 2005 AT RX No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Monarch Pharms NEOSPORIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 060582-001 Approved Prior to Jan 1, 1982 AT RX No Yes ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Watson Labs NEOMYCIN AND POLYMYXIN B SULFATES AND GRAMICIDIN gramicidin; neomycin sulfate; polymyxin b sulfate SOLUTION/DROPS;OPHTHALMIC 062788-001 Jun 11, 1987 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 Gramicidin, Neomycin Sulfate, and Polymyxin B Sulfate

Last updated: July 30, 2025

Introduction

The global pharmaceutical landscape is continually evolving, driven by advances in antimicrobial agents, regulatory shifts, and market demand. Among antibiotics, drugs like Gramicidin, Neomycin Sulfate, and Polymyxin B Sulfate maintain clinical relevance, particularly amid rising antimicrobial resistance (AMR). This analysis explores the market dynamics and financial outlook for these drugs, emphasizing production trends, regulatory environment, and commercial opportunities.


Market Overview and Clinical Significance

Gramicidin

Gramicidin is a natural polypeptide antibiotic primarily used topically for wound infections and in laboratory research. Its limited systemic use stems from poor oral bioavailability and toxicity concerns. Nonetheless, its niche applications have sustained a low but steady demand in pharmaceutical research and specialized formulations.

Neomycin Sulfate

Neomycin sulfate is a broad-spectrum aminoglycoside antibiotic frequently formulated for topical, ophthalmic, and gastrointestinal indications. It remains vital in treating skin infections, eye conditions, and bowel decontamination, although systemic use wanes due to nephrotoxicity and ototoxicity risks.

Polymyxin B Sulfate

Polymyxin B has regained prominence amid the global crisis of carbapenem-resistant Enterobacteriaceae (CRE). Its renewed importance as a last-line agent, especially for multidrug-resistant Gram-negative infections, drives increased manufacturing and strategic positioning.


Market Dynamics

1. Supply Chain and Production Trends

Global Manufacturing Footprint

  • Neomycin sulfate and Polymyxin B are predominantly produced in India and China, with several multinational pharmaceutical companies sourcing from these regions. Industry reports indicate a consolidation trend, with fewer high-volume producers lowering costs but raising concerns over supply chain resilience.
  • Gramicidin production is limited, mainly deriving from specialized biotechnological processes, with most manufacturing by niche producers focused on research applications.

Raw Material Availability

  • The raw materials for neomycin and polymyxins involve complex fermentation processes using streptomycete strains, sensitive to cultivation conditions and regulatory oversight.
  • Disruptions, such as plant shutdowns or raw material shortages, can influence prices and supply stability, especially in the context of the COVID-19 pandemic's impact on global logistics.

2. Regulatory Landscape

  • Regulatory agencies like the FDA, EMA, and CDSCO in India enforce stringent standards on pharmaceutical manufacturing. Recent policy shifts have increased auditing and quality verification requirements, impacting production costs.
  • Polymyxin B's off-label and unauthorized use have heightened scrutiny, necessitating tighter regulatory controls and, in some cases, batch-specific licensing.
  • For neomycin sulfate and gramicidin, regulatory hurdles revolve around ensuring safety profiles, especially for topical formulations, and complying with evolving pharmaceutical directives.

3. Market Demand and Therapeutic Trends

  • The global need for effective antibiotics sustains moderate demand for neomycin sulfate and polymyxin B; however, growth is tempered by the advent of alternative therapies and concerns over toxicity.
  • Polymyxin B's resurgence is driven by the rise of multidrug-resistant Gram-negative bacteria, with forecasts indicating an optimistic growth trajectory over the next five years.
  • The niche usage of gramicidin limits its market size, though ongoing research, particularly in microbiological studies, sustains a steady flow of demand.

4. Competition and Patent Landscape

  • Increasing generic penetration constrains profit margins. Patent expirations for some formulations have led to commoditization, fueling price competition.
  • However, formulations like polymyxin B are under patent extension or new derivative development, which could influence future market positioning.

5. Impact of COVID-19 and AMR on Market Trajectory

  • The COVID-19 pandemic heightened awareness of bacterial superinfections, intensifying demand for potent antibiotics.
  • The global rise in antimicrobial resistance underscores the necessity of drugs like polymyxin B, possibly influencing increased procurement and research investment.

Financial Trajectory and Outlook

1. Revenue Expectations

  • Polymyxin B is poised for substantial growth, with CAGR estimates projecting a 7-10% increase over the next five years, driven by global AMR mitigation strategies.
  • Neomycin sulfate faces a plateau or slight decline in mature markets but maintains steady sales in emerging economies owing to low-cost formulations.
  • Gramicidin’s niche applications restrict significant revenue growth, but continued research interest sustains modest financial inflow.

2. Investment and R&D Trends

  • Rising investment in combating AMR influences research into polymyxin B derivatives and combination therapies, offering lucrative licensing and partnership opportunities.
  • Companies investing in process optimization for neomycin and gramicidin aim to reduce manufacturing costs and extend product lifecycles.

3. Market Challenges and Opportunities

  • Challenges include regulatory barriers, toxicity profiles (notably for neomycin), and public perception.
  • Opportunities lie in developing safer, targeted formulations, expanding into new therapeutic areas, and leveraging biosynthetic advances to secure supply chains.

4. Pricing Dynamics

  • Prices are generally declining due to increased generic competition, but strategic supply chain management and regulatory compliance can stabilize margins.
  • Premium pricing might be attainable for formulations with improved safety profiles or novel indications, especially in resistant infections.

Conclusion: Strategic Outlook

The market for Gramicidin, Neomycin Sulfate, and Polymyxin B Sulfate exhibits divergent trajectories rooted in clinical relevance and market forces:

  • Polymyxin B stands out as the most promising with substantial growth potential, bolstered by the global emphasis on combating antimicrobial resistance.
  • Neomycin sulfate remains a staple in topical and ocular formulations, with its market driven by emerging economies and applications.
  • Gramicidin, with limited systemic utility, maintains niche demand but faces stiff competition from newer agents.

Manufacturers should prioritize supply chain resilience, invest in R&D for safer, more effective formulations, and adapt to evolving regulatory landscapes to capitalize on emerging opportunities within this segment.


Key Takeaways

  • Polymyxin B is the fastest-growing antibiotic in this group, with a forecasted CAGR of 7-10% driven by the global AMR crisis.
  • Neomycin sulfate retains steady demand, especially in developing markets, but faces pricing pressures due to widespread generic availability.
  • Gramicidin’s niche applications sustain limited but stable demand; innovation remains key for market expansion.
  • Industry players must navigate complex regulatory frameworks and raw material vulnerabilities to ensure supply and compliance.
  • Emerging research and the strategic positioning of drugs targeting resistant infections are critical for future financial success.

Frequently Asked Questions

1. What factors are driving increased demand for Polymyxin B Sulfate?
The surge in multidrug-resistant Gram-negative bacterial infections, notably CRE, has made Polymyxin B a critical last-line therapy, fostering increased manufacturing and strategic procurement.

2. How does antimicrobial resistance influence the market trajectory of these drugs?
AMR heightens the need for potent antibiotics like Polymyxin B, leading to increased research, regulatory scrutiny, and market demand, while diminishing the use of older, toxic agents like Neomycin when safer alternatives emerge.

3. What are the primary challenges faced by manufacturers of these antibiotics?
Challenges include raw material supply disruptions, stringent regulatory standards, toxicity profiles influencing formulations, and price competition among generics.

4. Are there ongoing innovations in the formulations or derivatives of these drugs?
Yes, especially for Polymyxin B, with efforts focusing on improved safety, pharmacokinetics, and combinatorial therapies to address resistance and toxicity issues.

5. What strategic moves should companies consider to capitalize on this market?
Investing in supply chain robustness, R&D for safer/improved formulations, navigating regulatory pathways effectively, and forming strategic partnerships for differentiated products will be vital.


Sources

[1] MarketsandMarkets. "Antimicrobial Resistance Market by Product, Application, and Region." 2022.
[2] Grand View Research. "Antimicrobial Drugs Market Analysis." 2022.
[3] World Health Organization. "Global antimicrobial resistance and containment strategies." 2021.
[4] IQVIA. "The Impact of COVID-19 on the Global Pharmaceutical Supply Chain." 2022.

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.