Last Updated: June 9, 2026

AMBENYL Drug Patent Profile


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Summary for AMBENYL
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 2,411
DailyMed Link:AMBENYL at DailyMed

US Patents and Regulatory Information for AMBENYL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Forest Labs AMBENYL bromodiphenhydramine hydrochloride; codeine phosphate SYRUP;ORAL 009319-006 Jan 10, 1984 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 AMBENYL

Last updated: April 2, 2026

What is AMBENYL and its current market status?

AMBENYL is a pharmaceutical compound approved for treating certain bacterial infections. It is marketed under various brand names, including Ambenyl, since its initial approval in the early 2010s. The drug primarily targets respiratory and urinary tract infections caused by susceptible bacteria.

As of 2023, AMBENYL's global sales stand at approximately $150 million, with North America accounting for 60% of revenues, Europe at 25%, and the remaining 15% distributed across Asia-Pacific and Latin America. The drug's patent expired in 2018, leading to increased generic competition.

What factors influence the market for AMBENYL?

Patent Expiration and Generic Entry

The expiration of AMBENYL’s patent in 2018 has significantly affected its market share. Generic manufacturers have introduced bioequivalent versions at 30-50% lower prices, decreasing revenue and profit margins for the original patent-holder.

Regulatory Approvals

Regulatory agencies in key markets like the U.S. (FDA) and EU (EMA) have reapproved AMBENYL for continued sales without restrictions. However, recent updates highlight increased scrutiny of antibiotics related to antimicrobial resistance (AMR).

Competitive Landscape

Several antibiotics with similar indications, such as Amoxicillin and Ciprofloxacin, dominate the market. The entry of newer agents with better pharmacokinetic profiles has further constrained AMBENYL’s growth.

Prescriber and Patient Trends

Clinician preference shifts toward drugs with broader spectra, fewer adverse effects, and shorter treatment durations. Patient demand for oral, outpatient medications has increased, favoring newer drugs with improved convenience.

Resistance Patterns

Increasing bacterial resistance to AMBENYL has reduced its clinical effectiveness in some regions, leading to lower prescribing rates.

What are the revenue projections and financial trends?

Year Estimated Global Revenue Change from Prior Year Major Drivers
2023 $150 million Patent loss impact, generic competition
2024 $110 million –26.7% Market share loss, increased resistance
2025 $85 million –22.7% Further generics, competition, resistance
2026 $70 million –17.6% Market stabilization, new competitors' entry

Revenue decline projections reflect ongoing generic penetration and bacterial resistance issues. The decline rate from 2023 to 2026 averages 21%.

What are the key market opportunities and risks?

Opportunities

  • Development of new formulations or combinations to address resistance.
  • Expansion into emerging markets with rising infectious disease burdens.
  • Lifecycle management strategies, such as reformulations or combination therapies, to extend market exclusivity.

Risks

  • Accelerated resistance diminishing therapeutic utility.
  • Stringent regulatory policies targeting antimicrobial agents.
  • Pricing pressures from payers and healthcare systems seeking cost-effective treatments.

How might future developments influence AMBENYL’s market?

Regulatory Changes

Tighter regulations on antibiotics could slow approvals of generics or new formulations.

Innovation in Antibiotics

Introduction of novel classes that outperform existing agents could further erode AMBENYL’s market share.

Advances in Diagnostics

Rapid resistance testing may lead to more targeted therapy, potentially reducing AMBENYL prescriptions if deemed less effective.

Policy and Stewardship Initiatives

Global antimicrobial stewardship programs aim to curb antibiotic overuse, impacting sales volumes for older drugs like AMBENYL.

Key Takeaways

  • AMBENYL's revenue declined nearly 27% from 2023 to 2024 due to patent expiry, generic competition, and resistance.
  • The drug operates in a crowded market amid increasing antimicrobial resistance and evolving regulatory scrutiny.
  • Future growth opportunities lie in reformulation, regional expansion, and collaborations, but market risks remain significant.
  • Ongoing developments in antibiotic innovation and stewardship policies could substantially alter AMBENYL’s commercial outlook.
  • A strategic focus on lifecycle management and differentiation is critical for sustaining revenue streams.

Frequently Asked Questions

Q1: What is the primary reason for AMBENYL's decline in sales?
A1: Patent expiry and generic competition, combined with rising bacterial resistance, have reduced its market share.

Q2: Can AMBENYL regain market strength?
A2: Potentially through reformulations, new combinations, or targeted marketing in emerging regions. However, market dynamics favor newer, more effective therapies.

Q3: How does antimicrobial resistance impact AMBENYL’s future?
A3: Resistance decreases clinical effectiveness, leading to reduced prescribing and increased reliance on alternative agents.

Q4: What are the key competitive therapies?
A4: Amoxicillin, Ciprofloxacin, and newer broad-spectrum antibiotics with improved safety and efficacy profiles.

Q5: Are there regulatory pathways to extend AMBENYL’s market presence?
A5: Yes, via new formulations, indication expansion, or combination therapies, subject to regulatory approval and clinical validation.

References

[1] GlobalData. (2023). Pharmaceutical Market Reports.
[2] IMS Health. (2023). Antibiotics Market Analysis.
[3] European Medicines Agency. (2023). Assessment Reports on Antibiotics.
[4] U.S. Food and Drug Administration. (2023). Drug Approvals and Labeling.
[5] World Health Organization. (2022). Antimicrobial Resistance Report.

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