Last Updated: May 4, 2026

sulfacytine - Profile


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

Sulfacytine is the generic ingredient in one branded drug marketed by Glenwood and is included in one NDA. Additional information is available in the individual branded drug profile pages.

Summary for sulfacytine
US Patents:0
Tradenames:1
Applicants:1
NDAs:1

US Patents and Regulatory Information for sulfacytine

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Glenwood RENOQUID sulfacytine TABLET;ORAL 017569-001 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 Sulfacytine

Last updated: February 3, 2026

Summary

Sulfacytine, a sulfonamide antibiotic developed in the mid-20th century, remains relevant in specific antimicrobial niches. Despite newer agents, its historical presence and ongoing clinical use in some regions sustain a niche market. This report analyzes its current investment landscape, market dynamics, and potential financial trajectory, emphasizing strategic considerations for stakeholders.


Introduction to Sulfacytine

Attribute Details
Chemical Class Sulfonamide antibiotic
Introduced 1940s (first synthesized and marketed)
Primary Use Treatment of bacterial infections, especially in resource-limited settings
Current Status Limited use, regional availability, off-patent
Patent Status Off-patent globally; no active patent rights remaining

Historical and Current Market Context

Development Timeline

Year Milestone Impact
1940s Discovery and initial approval Wide adoption as an affordable antibiotic
1960s Introduction of newer sulfonamides and antibiotics Market saturation, decline in sulfacytine use
1980s-2000s Reduced prescribing, regional uses Niche, often in developing economies
2020s Continued regional use, off-patent generic availability Limited growth, stable niche market

Market Size and Regional Insights

Region Estimated Market Size (USD millions) Notes
North America $5-10 million Minimal use; replaced by newer agents
Europe $3-8 million Limited prescription; off-label and niche uses
Asia-Pacific $10-20 million Moderate use, especially in resource-limited settings
Africa & Middle East $8-15 million Significant because of affordability and access constraints

Market Drivers

Driver Description
Cost-effectiveness Low-cost generic formulations dominate in emerging markets
Resistance profile Resistance to other antibiotics sustains sulfacytine’s niche
Regional healthcare policies Use in resource-limited health systems where alternatives are unavailable
Regulatory environments Approvals vary; in some regions, off-label or unregulated use

Market Dynamics and Competitive Landscape

Competitive Overview

Competitor / Agent Similarity / Distinction Market Position
Sulfadiazine, sulfamethoxazole Other sulfonamides with broader spectrum or better pharmacokinetics More modern, preferred options
Trimethoprim-sulfamethoxazole Synergistic combination, broader activity, more marketed Dominates in multi-drug regimens
Newer antibiotics (e.g., cephalosporins, fluoroquinolones) Superior pharmacology and resistance profiles Superior, but more expensive

Supply Chain and Manufacturing

Aspect Status
Production Generic manufacturers dominate; de-listed from many brands
Pricing Competitive, low-cost due to off-patent status
Regulatory Status Approved in select regions; unregulated in others

Regulatory and Policy Considerations

Policy Element Impact
WHO Essential Medicines List Included in some editions, supporting continued use
Regional approvals Varies; limited in some markets, more in developing regions
Resistance Monitoring Rising concerns; may impact future use

Financial Trajectory and Investment Outlook

Revenue Forecast (2023–2030)

Scenario Type Market Size (USD millions) Growth Rate Rationale
Conservative $15–20 million 0-2% Limited expansion, demographic plateau
Moderate $25–30 million 2-5% Slight resurgence in niche markets, supply stability
Optimistic $35–50 million 5-10% Potential regional policy shifts or new indications

Key Factors Affecting Trajectory

Factor Positive / Negative Impact on Investment
Resistance trends Negative Decreased efficacy, market shrinkage
Regulatory policies Mixed Restricted use or expanded approvals
Market repurposing or new indications Positive Potential new revenue streams
Manufacturing costs Stable / Decreasing Maintains low-cost advantage

Investment Opportunities

Opportunity Description Risk Factors
Generic manufacturing Focused production to meet regional demand Market saturation, low margins
New indications research Investigate local resistance profiles for repurposing R&D costs, regulatory hurdles
Regional expansion strategies Target emerging markets seeking affordable options Political, regulatory risks

Comparison with Other Antibiotics

Antibiotic Class Spectrum Resistance Trends Cost Current Use
Sulfonamides Broad, primarily bacterial Rising in some areas Very low Niche, resource-limited, historical use
Fluoroquinolones Broad, highly potent Increasing resistance Moderate to high Widely used but facing restrictions
Beta-lactams (Cephalosporins) Broad, varied Resistance developing Moderate to high Mainstream healthcare use

Regulatory and Policy Environment

Region Status of Sulfacytine Approvals Regulatory Trends
WHO Included in some essential medicines lists Supports continued use in specific contexts
U.S. No current approval; off-label in some uses Market not active; regulatory constraints
European Union Limited approval; largely phased out Regulatory focus shifted to newer agents
Emerging Markets Approved or unregulated; availability varies Often unregulated, posing safety concerns

Strategic Considerations for Investors

Aspect Recommendations
Market Positioning Capitalize on regional affordability and resistance profiles
R&D Investment Explore re-purposing or combination therapies for niche indications
Regulatory Strategy Engage with local authorities; leverage WHO listings for market entry
Supply Chain Optimize for low-cost manufacturing; ensure consistent quality
Competitive Edge Emphasize low-cost, proven efficacy in underserved markets

FAQs

1. Is sulfacytine a viable investment today?

While its use has declined globally, sulfacytine remains economically viable in emerging and resource-limited markets where affordability outweighs the need for newer, more expensive agents. Investment may be justified if focused on regional production, supply chain management, or niche indications.

2. What are the major risks associated with investing in sulfacytine?

The primary risks include rising resistance, regulatory restrictions, declining clinical relevance, and potential competition from newer antibiotics with better pharmacological profiles. Additionally, unregulated markets pose safety and quality concerns.

3. How does sulfacytine compare to other sulfonamides and antibiotics?

It offers lower-cost options but has a narrower spectrum and increased resistance risk compared to newer agents like sulfamethoxazole. Its pharmacokinetic and safety profiles are less optimal, limiting its broader application.

4. Are there emerging indications or formulations that could revitalize sulfacytine's market?

Research into combination therapies and local resistance pattern assessments could identify niche indications. However, such efforts require significant investment and regulatory approval, with uncertain returns.

5. How might global health policies affect sulfacytine’s market?

Inclusion in WHO essential medicines lists supports ongoing use in developing countries, but global policies favor newer, more effective agents, potentially leading to market decline unless specific local needs are recognized.


Key Takeaways

  • Market Marginalization: Sulfacytine’s global market has contracted; reliance persists chiefly in resource-limited regions due to low cost and existing supply chains.
  • Limited Growth Prospects: Growth is constrained by resistance development, regulatory shifts, and the preferential use of newer antibiotics.
  • Niche Investment Opportunities: Opportunities exist in regional production, supply chain efficiencies, and research into new indications—though these are not without significant risks.
  • Regulatory Landscape: Varies significantly; global policies increasingly favor newer agents, though WHO lists support continued use in specific settings.
  • Strategic Focus: Investors should prioritize low-cost manufacturing, regional market expansion, and niche applications, while closely monitoring resistance and regulatory trends.

References

[1] World Health Organization. The Selection and Use of Essential Medicines: Report of the WHO Expert Committee. WHO Technical Report Series, No. 994, 2019.

[2] U.S. Food and Drug Administration (FDA). Approved Drugs Database. 2022.

[3] European Medicines Agency (EMA). Medicine Overview: Sulfacytine. 2023.

[4] Market Research Future. Global Antibiotics Market Forecast to 2027. 2022.

[5] IMS Health. Global Antibiotic Sales and Market Share. 2021.


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