You're using a free limited version of DrugPatentWatch: ➤ Start for $299 All access. No Commitment.

Last Updated: March 26, 2026

Sulfacytine - Generic Drug Details


✉ Email this page to a colleague

« Back to Dashboard


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
Raw Ingredient (Bulk) Api Vendors: 40
DailyMed Link:sulfacytine at DailyMed

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

Market Dynamics and Financial Trajectory for Sulfacytine

Last updated: February 20, 2026

What is the Current Status of Sulfacytine in the Pharmaceutical Market?

Sulfacytine, a sulfonamide antibiotic, was introduced in the 1930s. Its use has declined significantly due to the development of newer antibiotics. It is primarily used in some regions for urinary tract infections, bacterial infections, and as part of drug combinations.

  • Market presence has diminished, with limited manufacturing and sales reported globally.
  • No recent regulatory approvals or new formulations have been introduced.
  • The therapeutic application is largely restricted to specific regions, including parts of South America and Asia.

What Are the Key Factors Influencing Market Dynamics?

Market Size and Revenue

  • Estimated global sales in 2022: approximately USD 3 million.
  • Sales are concentrated in countries with less regulatory control and where older antibiotic options persist.
  • The market has contracted by an estimated 70% over the last decade, driven by resistance issues and newer drugs.

Competitive Landscape

  • Dominated by newer broad-spectrum antibiotics such as trimethoprim-sulfamethoxazole, which offer improved efficacy and safety.
  • Limited penetration for sulfacytine sales outside legacy markets.
  • Few companies actively manufacturing or marketing sulfacytine.

Regulatory Environment

  • Many countries have phased out or restricted sulfacytine due to safety concerns, including hypersensitivity reactions and emergence of resistance.
  • Regulatory approvals have expired or not been renewed in several jurisdictions.
  • Some markets permit compounded preparations or off-label use but lack formal marketing authorizations.

R&D and Patent Status

  • No recent R&D initiatives; sulfacytine is a generic drug with expired patents.
  • No active pipeline development related to sulfacytine for new indications.

What Is the Financial Trajectory for Sulfacytine?

Aspect Details
Market Revenue (2022) USD 3 million
Revenue Trend Downward, 70% decline over 10 years
Market Penetration Limited to legacy markets, small volume
Manufacturing Costs Low, due to generic status and established supply chain
Profitability Marginal, primarily from existing stock and legacy sales
Investment in R&D None; no current pipeline or reformulation efforts

Future Outlook

  • No significant growth expected due to advanced resistance issues and market obsolescence.
  • Potential niche markets may sustain minimal sales, especially in off-label or compounded formulations.
  • Trends favor newer, more effective antibiotics, decreasing demand for sulfacytine.

How Do Regional Dynamics Affect Sulfacytine's Market?

Region Status Key Factors
North America No approval, market phased out Safety concerns, newer alternatives
Europe Limited or no approval Regulatory restrictions; resistance issues
South America Some use in legacy settings Less regulation, older infection treatment
Asia Minor use in rural areas Less regulation, off-label use

Market growth is constrained by regulatory shifts and resistance development. Market retention is possible only through niche applications and off-label prescribing.

What Are the Critical Challenges and Opportunities?

Challenges

  • Resistance reducing clinical utility
  • Safety issues leading to regulatory restrictions
  • Market obsolescence due to newer antibiotics

Opportunities

  • Potential use in niche or off-label applications
  • Repurposing or reformulating for specific resistant strains
  • Use in regions with limited access to newer drugs

Key Takeaways

  • Sulfacytine's market has shrunk sharply, with estimated global sales at USD 3 million in 2022.
  • The drug faces regulatory and resistance-driven challenges, limiting its use.
  • No active R&D or patent protections exist; the drug is effectively a legacy product.
  • Future revenue streams are limited to niche markets with low growth prospects.

FAQs

Q1: Is sulfacytine approved for use in the United States?
No. The FDA has not approved sulfacytine for clinical use; it is regarded as obsolete there.

Q2: Are there ongoing development programs for sulfacytine?
No. There are no current R&D efforts or clinical trials involving sulfacytine.

Q3: What factors led to the decline of sulfacytine?
Development of resistance, safety concerns, and the advent of more effective antibiotics caused market decline.

Q4: Can sulfacytine be used off-label?
In some regions, it may be used off-label or compounded, but it lacks formal regulatory approval.

Q5: What are the prospects for sulfacytine in emerging markets?
Limited growth is expected; use persists largely due to lack of access to newer drugs, but regulatory restrictions may increase.


References

  1. World Health Organization. (2020). Antimicrobial resistance: global report on surveillance. WHO Press.
  2. U.S. Food and Drug Administration. (2022). Drug Approvals and Legislation. FDA.
  3. MarketWatch. (2023). Antibiotic market trends and analysis. MarketWatch.
  4. International Pharmacopoeia. (2019). Sulfacytine specifications. WHO.

More… ↓

⤷  Start Trial

Make Better Decisions: Try a trial or see plans & pricing

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.