Last Updated: July 28, 2026

ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE Drug Patent Profile


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Which patents cover Orphenadrine Citrate, Aspirin, And Caffeine, and what generic alternatives are available?

Orphenadrine Citrate, Aspirin, And Caffeine is a drug marketed by Sandoz and Stevens J and is included in two NDAs.

The generic ingredient in ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE is aspirin; caffeine; orphenadrine citrate. There are twenty-two drug master file entries for this compound. Three suppliers are listed for this compound. Additional details are available on the aspirin; caffeine; orphenadrine citrate profile page.

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Summary for ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE
US Patents:0
Applicants:2
NDAs:2

US Patents and Regulatory Information for ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sandoz ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE aspirin; caffeine; orphenadrine citrate TABLET;ORAL 074654-001 Dec 31, 1996 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Stevens J ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE aspirin; caffeine; orphenadrine citrate TABLET;ORAL 074988-002 Apr 30, 1999 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Sandoz ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE aspirin; caffeine; orphenadrine citrate TABLET;ORAL 074654-002 Dec 31, 1996 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Stevens J ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE aspirin; caffeine; orphenadrine citrate TABLET;ORAL 074988-001 Apr 30, 1999 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
Last updated: February 3, 2026

Investment Scenario and Fundamentals Analysis for ORPHENADRINE CITRATE, ASPIRIN, AND CAFFEINE Combination

Market Overview

The combination of orphenadrine citrate, aspirin, and caffeine (commonly known as Norgesic or Norflex combination) is indicated primarily for muscle pain and tension. It has been available for decades, with a well-established off-label use profile. The drug's market relies heavily on treatment for musculoskeletal conditions, but sales are limited by generic competition, regulatory shifts, and patent expirations.

Core Product Profile

  • Active Components:

    • Orphenadrine citrate: Muscle relaxant with anticholinergic properties
    • Aspirin: Non-steroidal anti-inflammatory drug (NSAID)
    • Caffeine: Stimulant that enhances analgesic effects of aspirin
  • Mechanism of Action:

    • Orphenadrine reduces muscle spasm
    • Aspirin alleviates pain and inflammation
    • Caffeine enhances absorption and potentiates analgesic efficacy
  • Indications: Musculoskeletal pain, tension headaches, muscle spasms


Patent and Regulatory Landscape

The key patents for the combination have mostly expired or are nearing expiration. Regulatory pathways are mature, with approvals established in major markets including the United States (FDA), European Union (EMA), and others. The drug remains generic, with multiple formulations available.

Implication: Limited exclusivity presents challenges for premium pricing and R&D-driven growth.


Market Dynamics and Competitive Landscape

Aspect Details
Market Size Estimated at $100-200 million in US sales annually[1]
Competition Generic formulations dominate; limited branded options
Regulatory Environment Shift toward OTC categorization in some regions[2]
Price Trends Prices have declined 50% over past decade due to generics[3]

The generic status constrains profitability. Volume-driven sales are the primary revenue route, which depends on physician prescribing habits and OTC availability.


R&D and Innovation Opportunities

  • Formulation improvements: Developing extended-release versions
  • Combination therapy: Pairing with other analgesics or muscle relaxants
  • Biomarker-based indications: Exploring new musculoskeletal or pain-related indications

Investment in R&D faces low ROI due to patent limitations and crowded generic markets. Orphan drug designation or new therapeutic uses could provide premium opportunities but are unlikely in this context.


Regulatory Risks and Policy Considerations

  • OTC potential: Some jurisdictions are shifting the combination to OTC, reducing prescription sales but expanding volume.
  • Reformulation restrictions: Changes in FDA or EMA guidelines may restrict regulatory pathways or require costly reformulations.
  • Safety concerns: Aspirin use in certain populations could limit universal application, especially in elderly or bleeding-risk groups.

Financial Outlook

  • Revenue: Stable but declining due to generic erosion.
  • Margins: Compressed, with limited potential for stabilization unless patent or formulation exclusivity is regained.
  • Investments: R&D investments are unlikely to yield profitable breakthroughs, given the market maturity.

Strategic Recommendations

  1. Focus on niche markets: Target specific patient populations where usage is less generic, such as OTC formulations in emerging markets.
  2. Explore new indications: Investigate off-label uses or new combinations for chronic musculoskeletal conditions.
  3. Cost leadership: Compete solely on price, emphasizing low-cost generics.
  4. Partnerships: Collaborate with distributors to improve OTC availability and market penetration.

Risks to Investment

  • Market saturation: High competition and low differentiation.
  • Patent expiration: Further erosion of exclusivity.
  • Regulatory changes: Shifts toward OTC may reduce margins but increase volume.
  • Safety profile: Use restrictions in certain demographics could limit use.

Key Takeaways

  • The drug combination is mature with declining revenues due to generic competition.
  • Market expansion opportunities are limited; innovation faces low ROI.
  • Strategic focus should prioritize niche markets, OTC expansion, or new indications.
  • Oversight of regulatory trends and safety considerations remain critical.
  • Overall investment risks are high relative to potential gains.

FAQs

1. What is the primary revenue source for this drug?
Prescription sales of generic formulations in the US and Europe.

2. Are there patent protections still in place?
Most patents have expired or are nearing expiration, limiting exclusivity.

3. Can OTC sales significantly boost revenues?
Yes, especially in markets where OTC availability is expanding; however, pricing pressure will increase.

4. Are there any recent regulatory developments affecting this drug?
Some jurisdictions consider moving the formulation to OTC, which could impact traditional prescription revenue streams.

5. What are the main R&D avenues for this combination?
Formulation enhancement, exploring new indications, or developing adjunct therapies.


References

[1] MarketWatch, "US Musculoskeletal Pain Market," 2022.
[2] FDA, "OTC Monograph Changes," 2021.
[3] IMS Health, "Price Trends for Generics," 2022.

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