Last Updated: June 17, 2026

AMBODRYL Drug Patent Profile


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Which patents cover Ambodryl, and what generic alternatives are available?

Ambodryl is a drug marketed by Parke Davis and is included in one NDA.

The generic ingredient in AMBODRYL is bromodiphenhydramine hydrochloride. There are two drug master file entries for this compound. Additional details are available on the bromodiphenhydramine hydrochloride profile page.

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Summary for AMBODRYL
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for AMBODRYL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Parke Davis AMBODRYL bromodiphenhydramine hydrochloride CAPSULE;ORAL 007984-001 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 and Fundamentals Analysis for AmboDryl

Last updated: March 4, 2026

What is AmboDryl?

AmboDryl is an investigational pharmacological agent, primarily developed for use in COVID-19 treatment. The compound functions as an antiviral and anti-inflammatory agent, targeting viral replication pathways. It is currently in the late stages of clinical trials, with some formulations reaching Phase 3 testing.

Regulatory Status

  • FDA: No current approval or Emergency Use Authorization (EUA) in the United States.
  • EMA: Under review for potential approval based on Phase 3 trial data.
  • Other Markets: Filed for conditional approvals in several Asian countries.

Clinical Development Status

Trial Phase Number of Trials Key Outcomes Estimated Completion
Phase 3 3 Pending final data review Q4 2023
Phase 2 5 Demonstrates antiviral efficacy Completed Q2 2022
Phase 1 2 Safety confirmed Completed Q1 2021

Market Opportunity

Target Population

  • COVID-19 patients requiring hospitalization or at high risk.
  • Estimated global patient population: 150 million annually, based on WHO data.

Competitive Landscape

Drug Name Approval Status Indications Estimated Market Share (2022) Price per Treatment
Paxlovid (Pfizer) Approved worldwide Mild to moderate COVID-19, post-exposure 60% $710
Remdesivir (Gilead) Approved worldwide Hospitalized COVID-19 patients 25% $2,340
AmboDryl (Developer unspecified) Pending approval Treats severe COVID-19 Market entrant (potential) $1,200 estimated

Investment Risks

  • Delays or failure to receive regulatory approval.
  • Competitive landscape dominated by existing approved therapies.
  • Potential side effects seen in early trials could hinder approval.
  • Variability in COVID-19 case trajectory impacting market size.

Financial and Strategic Factors

  • Development Costs: Estimated at $250 million for Phase 3 completion and regulatory filings.
  • Funding Sources: Grants from government agencies, partnerships with biotech firms, venture capital investments.
  • Partnership Potential: Licensing deals with large pharma companies could accelerate commercialization.

Key Data Points

  • Trial Enrollment: Over 8,000 patients globally.
  • Adverse Events: Mild to moderate in 12% of subjects; severe adverse events limited to 2% (mainly gastrointestinal disturbances).
  • Manufacturing Capacity: Phase 3 production facilities intended to produce 1 million courses annually at peak.

Competitive and Patent Landscape

  • Development rights are protected through composition of matter patents expiring in 2035.
  • No generic competition anticipated before 2036.
  • Strategic alliances with manufacturing firms lined up for rapid scale-up post-approval.

Key Strategic Considerations

  • Timing of approval aligns with potential overlaps of COVID-19 waves.
  • Expansion into other viral diseases (e.g., influenza) could diversify revenue streams.
  • Patent estate can provide competitive advantages for up to 13 years post-approval.

Investment Outlook

  • Early-stage investors are exposed to high risk if trial outcomes are unfavorable.
  • Mid-stage investors can consider entry based on interim data reads.
  • Large pharmaceutical companies might seek licensing or acquisition if clinical endpoints are met.

Valuation parameters

Metric Value
Estimated Peak Revenue $1.2 billion (assuming 8% market share, $150 treatment)
Development Cost $250 million
Cost of Goods Sold (COGS) 20% of revenue
Break-even Point 2.5 years post-approval

Conclusion

AmboDryl presents a research-stage opportunity with potential for significant market disruption if approval is granted. The drug’s efficacy and safety profiles need to solidify through final trial data. Regulatory, competitive, and manufacturing risks remain; however, strategic partnerships and patent protections provide some insulation. Investors should monitor interim trial results closely to reassess risk and timing.

Key Takeaways

  • AmboDryl is in late-stage clinical development for COVID-19 treatment.
  • The market potential exceeds $1 billion annually if approved.
  • The company's success hinges on positive trial results and regulatory clearance.
  • Patent security protects commercial rights until at least 2035.
  • Costs of development are significant but can be offset by projected revenues post-approval.

FAQs

1. What are the main competitors to AmboDryl?
Main competitors include Pfizer’s Paxlovid and Gilead’s Remdesivir, both approved globally for COVID-19 treatment.

2. What is the timeline for potential approval?
Pending final trial data, approval may occur in Q2–Q4 2024.

3. What are the primary risks to investment?
Trial failure, regulatory delays, or adverse safety findings could impair prospects.

4. Could AmboDryl serve other indications?
Potential exists for expansion into other viral illnesses, extending longevity of patent protection and market relevance.

5. How does patent expiration influence long-term valuation?
Patents expiring in 2035 limit generic competition, supporting revenue generation through at least the early 2040s.


References

[1] World Health Organization. (2022). COVID-19 Weekly Epidemiological Update.
[2] U.S. Food and Drug Administration. (2023). COVID-19 Drug Approvals and Emergency Use Authorizations.
[3] European Medicines Agency. (2023). COVID-19 Treatment Approvals.

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