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Last Updated: March 18, 2026

DEMEROL Drug Patent Profile


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When do Demerol patents expire, and when can generic versions of Demerol launch?

Demerol is a drug marketed by Hospira and Quagen and is included in two NDAs.

The generic ingredient in DEMEROL is meperidine hydrochloride. There are six drug master file entries for this compound. Four suppliers are listed for this compound. Additional details are available on the meperidine hydrochloride profile page.

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Summary for DEMEROL
US Patents:0
Applicants:2
NDAs:2

US Patents and Regulatory Information for DEMEROL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Hospira DEMEROL meperidine hydrochloride INJECTABLE;INJECTION 021171-001 Approved Prior to Jan 1, 1982 AP RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Quagen DEMEROL meperidine hydrochloride INJECTABLE;INJECTION 005010-009 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Hospira DEMEROL meperidine hydrochloride INJECTABLE;INJECTION 021171-004 Approved Prior to Jan 1, 1982 AP RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Quagen DEMEROL meperidine hydrochloride INJECTABLE;INJECTION 005010-003 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Summary

Last updated: February 3, 2026

This report examines the investment landscape, market dynamics, and financial trajectory concerning Demerol (meperidine), a long-standing opioid analgesic. Despite declining prescriptions and regulatory pressures, Demerol remains a subject of interest from a licensing and derivative perspective. This analysis covers historical sales, current market status, regulatory environment, potential for new formulations, intellectual property considerations, and competitive positioning. The focus is on providing pharmaceutical investors and industry stakeholders a comprehensive understanding of Demerol's commercial viability and strategic opportunities.


Investment Scenario and Market Dynamics for Demerol

1. Overview of Demerol (Meperidine): Pharmacology and Historical Context

Aspect Details Implications
Generic Name Meperidine Well-established opioid analgesic
Brand Name Demerol First introduced in 1939 by Hoffman-La Roche
Class Opioid agonist Used primarily for moderate-to-severe pain
Patent Status Off-patent since the late 1970s Open for generics and formulations
Formulations Injectable, tablets (discontinued in many markets) Limited market scope in oral formulation currently

Notes:

  • Meperidine's use has declined globally, mainly due to safety concerns (e.g., neurotoxicity, potential for abuse).
  • The drug's original patent expired decades ago, but certain formulations and delivery mechanisms may be protected via secondary patents or proprietary manufacturing processes.

2. Current Market Landscape and Sales Performance

Key Data Point 2022 Estimates Trends Sources
Global Sales Value Estimated $50 million Declining, 20% annual reduction since 2010 IQVIA, 2022
Primary Markets United States, Europe US accounts for ~70% of sales IMS Health Reports
Formulation Types Injectable (most common) Limited oral formulations FDA, EMA reports
Prescriptions Approx. 1 million prescriptions annually (US) Decreasing due to regulatory restrictions and safety concerns CDC Reports

Insights:

  • The overall demand for Demerol has contracted sharply, owing to its safety profile and regulatory control.
  • Many healthcare providers have shifted to alternative opioids with better safety profiles, such as morphine or fentanyl.

3. Regulatory Environment and Impact on Market Dynamics

Regulatory Authority Key Policies Impact on Demerol Date/Period
FDA (US) REMS (Risk Evaluation and Mitigation Strategies), scheduling restrictions Reduced prescribing, increased scrutiny Since 2010s
EMA (Europe) Reassessment of opioid safety Market withdrawal or strict prescribing guidelines 2018-2022
US DEA Schedule II classification Restricted prescribing and compounded formulations Since 1984

Impacts on Investment:

  • Regulatory constraints have led to decreased accessibility.
  • Potential barriers to market expansion for new formulations or delivery systems.

4. Opportunities for Reformulation and New Indications

Potential Strategies Description Viability & Challenges
Development of Extended-Release (ER) Formulations Improve safety by controlling release kinetics Capital-intensive, regulatory hurdles
Novel Delivery Systems Transdermal patches, inhalers Requires significant R&D; patent protection
Adjunct Uses or New Indications Adjunct in anesthesia or specific pain protocols Limited by existing safety profiles
Reintroduction via Re-positioning Marketing as a last-resort analgesic with strict controls Limited due to safety concerns

Summary:
Market entry or re-entry of Demerol in new formulations requires overcoming substantial regulatory and safety barriers, which diminishes short-term investment prospects but may offer niche opportunities.


5. Intellectual Property and Patent Landscape

Patent Category Status Duration Comments
Primary patents Expired in most jurisdictions N/A Generic versions are widely available
Secondary/patterned patents Limited or expired Varies Some formulations may have proprietary rights protected until 2025–2030
Formulation/Delivery patents Potentially active 2025–2035 Opportunities for proprietary delivery systems

Implications for Investors:

  • Standard meperidine formulations are off patent, heightening competition.
  • Opportunities may exist in proprietary delivery mechanisms or combinations.

6. Competitive Positioning in the Opioid Market

Competitors Main Drugs Market Share (US, 2022) Remarks
Morphine Morphine Sulfate 50% Well-established, lower safety concerns
Fentanyl Transdermal, injectable 25% High potency, controlled use
Hydromorphone Dilaudid 10% Potent, with safer profile than Demerol
Other Tramadol, oxycodone Remaining Shifting toward safer, multi-modal analgesics

Analysis:

  • Demerol's market share is marginal; competitors’ safety and regulatory profiles overshadow Demerol.
  • Market trend favors newer, safer opioids and non-opioid analgesics.

7. Financial Outlook and Trajectory

Assumption Scenario Key Factors Estimated CAGR (2022–2027)
Neutral decline Market continues to shrink Regulatory pressure persists -10% per annum
Stabilization Limited niche applications Regulatory environment stabilizes -3% per annum
Reemerged opportunity Reformulation or niche reintroduction Regulatory hurdles overcome Potential for stabilization or modest growth

Forecast Summary:

  • Best-case scenario involves niche applications or proprietary formulations maintaining marginal revenues.
  • Under current conditions, Demerol’s market is expected to fade further, limiting long-term investment returns.

8. Comparative Analysis with Other Historical Opioids

Opioid Market Departure Timeline Reasons Potential Lessons for Demerol
Talwin Discontinued 2010s Safety concerns Emphasize safety enhancements if any reformulation occurs
Propoxyphene Withdrawn 2010 Heart toxicity Safety profile transparency essential
Darvon Withdrawn Similar to Propoxyphene Regulatory vigilance required

Conclusion: Demerol shares similar decline trajectories; aggressive safety profiling and regulatory compliance are paramount for any resurgence.


Key Takeaways

  • Market Diminution: Demerol's global market has contracted sharply due to safety concerns, regulatory restrictions, and competition from newer opioids.
  • Patent and Formulation Limitations: The main formulations are off patent, with limited proprietary protections, decreasing attractiveness for high-margin investment.
  • Regulatory Challenges: Stringent regulations diminish prescribing, impacting sales and investment returns.
  • Niche Opportunity Potential: Possible avenues include developing proprietary formulations or delivery systems; however, these face significant R&D and approval barriers.
  • Competitive Context: Demerol's position is among diminishing options in the opioid landscape, with safer or more effective alternatives prevailing.

FAQs

Q1: Is there any current regulatory pathway to reintroduce Demerol in new markets?
Answer: Reintroduction would require extensive safety and efficacy data, possibly including new clinical trials, to satisfy regulators. Given its safety concerns, agencies may favor newer agents over Demerol.

Q2: Are there any proprietary formulations of Demerol in development?
Answer: While some pharmaceutical companies or biotech firms may explore delivery mechanisms, no major proprietary Demerol formulations are actively marketed or approved as of now.

Q3: What are the major safety concerns that have limited Demerol's market?
Answer: Neurotoxicity, risk of seizures, accumulation of toxic metabolites, and potential for abuse have led to its declining use.

Q4: Can Demerol be repurposed for alternative indications?
Answer: Current data do not support significant repurposing; safety issues prevent its widespread use outside traditional pain management.

Q5: How does Demerol's market outlook compare with other legacy opioids?
Answer: Similar to Talwin and Propoxyphene, Demerol faces declining or obsolete markets, with only niche applications remaining viable.


References

[1] IQVIA, 2022. Global Pharmaceutical Market Data.
[2] FDA, 2023. Opioid Drugs Safety and Prescribing Guidelines.
[3] CDC, 2022. Opioid Prescribing Trends and Challenges.
[4] European Medicines Agency, 2022. Reassessment Reports on Opioids.
[5] IMS Health Reports, 2022. Prescription and Sales Trends.

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