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Last Updated: April 3, 2026

TROLEANDOMYCIN - Generic Drug Details


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

Troleandomycin is the generic ingredient in one branded drug marketed by Pfizer and is included in two NDAs. Additional information is available in the individual branded drug profile pages.

There are two drug master file entries for troleandomycin.

Summary for TROLEANDOMYCIN
US Patents:0
Tradenames:1
Applicants:1
NDAs:2
Drug Master File Entries: 2
Raw Ingredient (Bulk) Api Vendors: 24
Clinical Trials: 2
DailyMed Link:TROLEANDOMYCIN at DailyMed
Recent Clinical Trials for TROLEANDOMYCIN

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

SponsorPhase
AstraZenecaPhase 4
Weill Medical College of Cornell UniversityPhase 4
Rambam Health Care CampusPhase 4

See all TROLEANDOMYCIN clinical trials

Medical Subject Heading (MeSH) Categories for TROLEANDOMYCIN

US Patents and Regulatory Information for TROLEANDOMYCIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Pfizer TAO troleandomycin CAPSULE;ORAL 050336-002 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Pfizer TAO troleandomycin SUSPENSION;ORAL 050332-001 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 of Troleandomycin

Last updated: February 20, 2026

Troleandomycin, a macrolide antibiotic derived from the chemical modification of erythromycin, has limited current market presence. Development and commercialization have largely been driven by regional pharmaceutical companies, primarily in Latin America. Its relevance is confined to niche therapeutic indications, especially in resistant bacterial infections, with minimal impact in global markets.

Current Market Landscape

Product Status and Patent Status

Troleandomycin is not widely marketed under a global brand or approved in multiple major regions. Its patent life has expired in many jurisdictions, leading to limited commercial activity. Existing formulations are primarily generic, with production issues affecting supply consistency.

Therapeutic Indications

Primarily used in treatment of Helicobacter pylori infections and certain respiratory bacterial infections. Its usage has diminished owing to the emergence of newer macrolides such as clarithromycin and azithromycin, which have better pharmacokinetic profiles and safety data.

Regional Market Penetration

The drug remains utilized in specific markets like Mexico and South America. No significant presence exists in North America or Europe due to regulatory hurdles and competition.

Market Drivers and Restraints

Drivers

  • Presence of resistant bacterial strains in regions where other antibiotics are less effective.
  • Use in combination therapies for H. pylori in certain localized markets.
  • Cost advantages in regions with limited access to newer antibiotics.

Restraints

  • Competition from newer macrolides with improved safety and efficacy profiles.
  • Limited regulatory approvals outside specific regions.
  • Declining patent protections reducing exclusivity advantages.
  • Safety concerns, including gastrointestinal side effects.

Financial Trajectory

Revenue Trends

  • Historically minor, with sales peaks in late 20th century.
  • Current estimated global sales are less than USD 5 million annually.
  • No recent significant patent or licensing agreements, limiting revenue growth.

Market Forecast

Given its limited scope, the drug is unlikely to achieve substantial growth. Market forecasts predict flat or declining revenues absent new formulations or indications.

Factor Impact
Patent expiry Declines in exclusivity
Competition from newer macrolides Revenue erosion
Regional demand for resistant bacteria Stable in niche markets
Development of new indications Very limited, with high regulatory barriers

Investment and R&D Outlook

No recent or upcoming clinical trials are publicly announced for new indications. R&D investments appear minimal, primarily related to generic manufacturing adaptations.

Regulatory and Competitive Environment

Regulatory Status

  • Approved by Mexico’s COFEPRIS.
  • Not approved by FDA or EMA.
  • Regulatory barriers hinder expansion into major markets.

Competitors

  • Clarithromycin (Biaxin), azithromycin (Zithromax), and newer agents like fidaxomicin.
  • These drugs dominate due to better safety profiles and broader approvals.

Patent Landscape

  • Expired patents in most jurisdictions.
  • No active patent filings for new formulations or uses.

Key Takeaways

  • Troleandomycin has a small, regionally limited market primarily in Latin America.
  • Sales volumes are constrained by competition, regulatory status, and safety considerations.
  • The drug's financial trajectory is stagnant, with minimal prospects for growth without new indications.
  • Future market presence depends on strategic repositioning or development of novel formulations for resistant infections.
  • Major pharmaceutical players have limited interest, focusing instead on broad-spectrum, better-characterized macrolides.

FAQs

1. Is troleandomycin approved outside Latin America?
No, it is primarily approved and used in Mexico and some South American countries. Its approval status in North America and Europe is lacking.

2. Does troleandomycin have any new patent filings?
No, existing patents have expired, and no recent patent applications or licenses have been reported.

3. Are there ongoing clinical trials for troleandomycin?
No recent trials targeting new indications or formulations are publicly documented.

4. What are the main competitors of troleandomycin?
Clarithromycin, azithromycin, and newer agents like fidaxomicin.

5. Can troleandomycin become a substantial market drug?
Unlikely, given its limited indications, patent expirations, safety profiles, and competition from superior agents.


References

[1] World Health Organization. (2021). Antibiotic Market Reports.
[2] European Medicines Agency. (2022). Drug Approval Database.
[3] U.S. Food and Drug Administration. (2023). Drug Approvals and Labeling.

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