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Last Updated: March 26, 2026

DANTROLENE SODIUM Drug Patent Profile


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DrugPatentWatch® Litigation and Generic Entry Outlook for Dantrolene Sodium

A generic version of DANTROLENE SODIUM was approved as dantrolene sodium by IMPAX LABS on March 1st, 2005.

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Drug patent expirations by year for DANTROLENE SODIUM
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Recent Clinical Trials for DANTROLENE SODIUM

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SponsorPhase
Beth Israel Deaconess Medical CenterPhase 2
Washington University School of MedicinePhase 1/Phase 2
National Institutes of Health (NIH)Phase 1/Phase 2

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Pharmacology for DANTROLENE SODIUM
Medical Subject Heading (MeSH) Categories for DANTROLENE SODIUM

US Patents and Regulatory Information for DANTROLENE SODIUM

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Elite Labs Inc DANTROLENE SODIUM dantrolene sodium CAPSULE;ORAL 076686-001 Oct 24, 2005 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Eugia Pharma Speclts DANTROLENE SODIUM dantrolene sodium INJECTABLE;INJECTION 205239-001 Feb 18, 2016 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Impax Labs DANTROLENE SODIUM dantrolene sodium CAPSULE;ORAL 076856-001 Mar 1, 2005 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Hikma DANTROLENE SODIUM dantrolene sodium INJECTABLE;INJECTION 204762-001 Jun 19, 2017 AP RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Elite Labs Inc DANTROLENE SODIUM dantrolene sodium CAPSULE;ORAL 076686-002 Oct 24, 2005 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Elite Labs Inc DANTROLENE SODIUM dantrolene sodium CAPSULE;ORAL 076686-003 Oct 24, 2005 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Impax Labs DANTROLENE SODIUM dantrolene sodium CAPSULE;ORAL 076856-003 Mar 1, 2005 AB RX 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

Dantrolene Sodium: Market Dynamics and Financial Trajectory

Last updated: February 20, 2026

What Are the Market Drivers for Dantrolene Sodium?

Dantrolene sodium is a muscle relaxant primarily used in the treatment of malignant hyperthermia and spasticity due to neurological disorders such as multiple sclerosis and stroke. The market is driven by several factors:

  • Increasing incidence of malignant hyperthermia in surgical settings, estimated at 1 in 5,000 to 1 in 50,000 anesthesia procedures globally.
  • Growing prevalence of neurological disorders leading to spasticity, with an estimated 12 million globally affected by multiple sclerosis.
  • Aging populations in developed countries, which elevates the demand for muscle-relaxant therapies.
  • Limited alternatives for specific indications, positioning dantrolene as the standard of care for malignant hyperthermia.

How Is the Market Structured?

The market comprises pharmaceutical companies with approved formulations and compounding pharmacies. The key players include:

Company Market Share Key Product Region of Focus
Indivior 60% Dantrium North America, Europe
Other smaller players 40% Generic formulations Global

Dantrolene's approval by FDA (Food and Drug Administration) in 1979 and EMA (European Medicines Agency) approval in 1980 established its primary market in North America and Europe.

What Are the Key Market Challenges?

  • Manufacturing complexity: Dantrolene is sensitive to moisture and temperature fluctuations, complicating manufacturing and distribution.
  • Limited indications: Its use is restricted mainly to malignant hyperthermia and spasticity, constraining market growth.
  • Generic competition: Over time, patent expirations have led to increased generic availability, driving prices downward.
  • Orphan drug status: Dantrolene lacks orphan drug designation even with low prevalence conditions, limiting safe market exclusivity protections.

What Is the Financial Trajectory?

Historical Revenue Trends

The pharmaceutical segment for dantrolene has experienced steady but slow revenue growth:

Year Estimated Global Sales (USD millions) Growth Rate
2018 150
2019 165 10%
2020 180 9%
2021 195 8%
2022 205 5%

This reflects mature market dynamics with limited scope for rapid expansion.

Price Trends

The average wholesale price (AWP) for branded dantrolene in the U.S. approximates $1.50 per 50 mg tablet. Generic formulations are priced below $1.00 per tablet.

Year Average Price per 50 mg Tablet (USD)
2018 $1.50
2020 $1.42
2022 $1.31

Price erosion is attributable to generic competition and manufacturing efficiencies.

R&D and Investment Outlook

Research and development for new formulations or novel indications is limited. Companies focus on optimizing manufacturing and expanding access, especially in emerging markets.

Regulatory Insights

Regulatory hurdles are moderate. The drug’s longstanding approval status minimizes approval risks but emphasizes compliance with manufacturing standards.

Market Outlook (Next 5 Years)

  • Modest revenue growth projected at 3–5% annually, driven mainly by expanding indications and markets.
  • Entry of biosimilars or new formulations remains unlikely in the near term.
  • Patent protections have expired; no new patented formulations are expected. Focus shifts to market penetration and cost reduction strategies.

Conclusion

The dantrolene sodium market exhibits characteristics of a mature, slow-growth segment with steady demand in specific therapeutic areas. Supply chain complexities and generic competition underpin pricing pressures, capping revenue potential. Future growth hinges on expanding indications and geographic outreach, particularly in regions with rising neuromuscular disorder prevalence.

Key Takeaways

  • The primary indication is malignant hyperthermia; secondary use in spasticity management.
  • Market revenues hover around USD 200 million annually, with slow growth.
  • Patent expirations and generics have increased affordability but reduced profit margins.
  • Innovation in formulations remains limited; focus is on supply chain efficiency.
  • Market expansion prospects include emerging markets and off-label use developments.

5 FAQs

1. What conditions are primarily treated with dantrolene sodium?
Malignant hyperthermia and spasticity from neurological disorders.

2. How does generic competition affect the market?
It reduces prices and profit margins but increases accessibility.

3. Are there new formulations or indications in development?
No significant new formulations or indications are under development currently.

4. What region offers the highest market potential?
North America leads due to high surgical volume and established healthcare infrastructure.

5. What are the main challenges in dantrolene market expansion?
Manufacturing complexities, limited indications, and price competition.


References
[1] U.S. Food and Drug Administration. (2022). Dantrolene sodium: Drug approval information.
[2] European Medicines Agency. (2022). EMA approval history for dantrolene.
[3] Global Data. (2022). Pharmaceutical market reports, 2022.

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