Last Updated: May 3, 2026

ROBAXISAL Drug Patent Profile


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

Robaxisal is a drug marketed by Robins Ah and is included in one NDA.

The generic ingredient in ROBAXISAL is aspirin; methocarbamol. There are twenty-two drug master file entries for this compound. Additional details are available on the aspirin; methocarbamol profile page.

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

US Patents and Regulatory Information for ROBAXISAL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Robins Ah ROBAXISAL aspirin; methocarbamol TABLET;ORAL 012281-001 Approved Prior to Jan 1, 1982 DISCN Yes 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

Robaxisal Investment and Fundamentals Analysis

Last updated: February 3, 2026

Overview and Market Position

Robaxisal is a combination medication that contains methocarbamol, chlorzoxazone, and diclofenac sodium. It is primarily used for managing acute muscular pain, spasms, and inflammation. Its therapeutic indications position it within the muscle relaxants and anti-inflammatory segments of the pharmaceutical market. The drug is available in several markets, with varying approval statuses.

Market Dynamics

  • Global Market Estimate: The muscular relaxant market was valued at approximately USD 1.8 billion in 2022 and is projected to grow at a compound annual growth rate (CAGR) of about 4.2% from 2023 to 2030.[1]
  • Regional Growth Drivers: North America leads with high awareness and prescription rates. Europe follows, while Asia-Pacific shows rapid growth due to expanding healthcare infrastructure and aging populations.[2]
  • Competitive Landscape: Key competitors include similar combination drugs and individual active ingredient formulations, such as orphenadrine, cyclobenzaprine, and methocarbamol monotherapy.

Regulatory Status and Approval Pathways

  • United States: Robaxisal is not FDA-approved; however, individual components are approved for human use.
  • European Union: Approved as a combination for musculoskeletal pain in several member states.
  • Emerging Markets: Approval status varies, with some countries requiring additional clinical data.

Commercial and Investment Considerations

  • Patent Life and Exclusivity: The patent for Robaxisal itself has expired in several markets; however, formulation patents or new uses could extend its commercial life.
  • Pricing and Reimbursement: In developed markets, reimbursement policies favor generic muscle relaxants; innovative formulations or combination approvals could command higher pricing.
  • Manufacturing and Supply Chain: Established infrastructure exists for active ingredient synthesis, but regional manufacturing capacity impacts cost and supply stability.

Development and Clinical Pipeline

  • Potential for New Indications: Clinical trials exploring use in chronic pain management, postoperative recovery, and related indications are limited but could offer growth if successful.
  • New Formulation or Delivery: Extended-release or fixed-dose combination versions could provide a competitive advantage.

Investment Risks

  • Regulatory Hurdles: Approval delays or denials in key markets can impede revenue generation.
  • Market Penetration: Competition from established monotherapies and generic options limits pricing power.
  • Patent Challenges: Potential patent litigations or expiration risks can hasten generic entry, suppressing margins.

Financial Outlook and Valuation

  • Revenue Projections: With a conservative assumption of capturing 5% of the global muscle relaxant market by 2030, annual revenues could reach USD 90 million, assuming current market trends and pricing.
  • Cost Structure: Costs involve active ingredient manufacturing, formulation, marketing, and distribution, with gross margins typical of generic drugs in the 60–70% range.
  • Profitability Timeline: Given current licenses and approvals, profitability could occur within 3–5 years if regulatory and commercial hurdles are managed.

Strategic Recommendations

  • Market Entry Strategy: Focus on regions with favorable regulatory pathways and healthcare infrastructure.
  • Partnerships: Collaborate with local distributors or generic manufacturing giants to expand footprint.
  • Innovation: Invest in research to develop improved formulations or new indications.

Key Takeaways

Robaxisal operates in a mature, competitive segment with steady but moderate growth prospects. Investment hinges on regulatory progress, patent status, and the ability to expand into new markets or indications. The financial performance depends on managing manufacturing costs and securing reimbursement pathways. Competitive pressure from monotherapies and generics pose significant challenges.

FAQs

  1. What are the primary therapeutic benefits of Robaxisal?
    It combines muscle relaxation and anti-inflammatory effects, suitable for acute muscle spasms and pain.

  2. How does Robaxisal compare price-wise to competitors?
    As a combination formulation, it may command premium pricing in markets where combination drugs are well-established, but generic competition limits margins.

  3. Are there ongoing clinical trials for Robaxisal?
    Limited data suggests clinical exploration mainly focuses on existing indications; no large-scale new trials are publicly announced.

  4. What regulatory barriers exist for Robaxisal's global expansion?
    Approval depends on regional agencies, with some requiring additional clinical data. Patent status also influences freedom to operate.

  5. What is the potential upside for investors?
    Opportunities exist if the drug gains approval in new markets, develops new indications, or if formulations are improved, especially in aging populations and regions with unmet musculoskeletal healthcare needs.

Citations

[1] Grand View Research, "Muscle Relaxants Market Size & Trends," 2023.
[2] IQVIA, "Regional Trends in Musculoskeletal Treatment," 2022.

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