Last Updated: May 3, 2026

DANTRIUM Drug Patent Profile


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

Dantrium is a drug marketed by Ph Health and is included in two NDAs.

The generic ingredient in DANTRIUM is dantrolene sodium. There are five drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the dantrolene sodium profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Dantrium

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

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Summary for DANTRIUM
US Patents:0
Applicants:1
NDAs:2

US Patents and Regulatory Information for DANTRIUM

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Ph Health DANTRIUM dantrolene sodium CAPSULE;ORAL 017443-001 Approved Prior to Jan 1, 1982 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Ph Health DANTRIUM dantrolene sodium INJECTABLE;INJECTION 018264-001 Approved Prior to Jan 1, 1982 AP RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Ph Health DANTRIUM dantrolene sodium CAPSULE;ORAL 017443-003 Approved Prior to Jan 1, 1982 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Ph Health DANTRIUM dantrolene sodium CAPSULE;ORAL 017443-002 Approved Prior to Jan 1, 1982 AB RX Yes Yes ⤷  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

International Patents for DANTRIUM

See the table below for patents covering DANTRIUM around the world.

Country Patent Number Title Estimated Expiration
France 1550961 ⤷  Start Trial
Switzerland 483446 Verfahren zur Herstellung von 1-((5-substituierten)-Furfurylidenamino)-hydantoinen und -imidazolidinonen ⤷  Start Trial
Sweden 303758 ⤷  Start Trial
Israel 26182 1-((5-SUBSTITUTED)FURFURYLIDENE-AMINO)-HYDANTOINS AND IMIDAZOLIDINONES ⤷  Start Trial
Belgium 686434 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Investment Scenario, Market Dynamics, and Financial Trajectory for DANTRIUM (Dantrolene Sodium)

Last updated: February 3, 2026

Summary

Dantrolene sodium, marketed as DANTRIUM, is a well-established drug used primarily for malignant hyperthermia (MH) and spasticity management. Despite its long market presence, emerging therapeutic applications and rehabilitation of existing formulations position DANTRIUM as a candidate for strategic investments. This analysis explores its current market landscape, growth potential, and financial outlook, with emphasis on patent status, regulatory environment, and competitive landscape.


What Is DANTRIUM and Its Approved Uses?

Attribute Details
Active Ingredient Dantrolene sodium
Therapeutic Indications Malignant hyperthermia, spasticity (multiple sclerosis, cerebral palsy)
Approval Body FDA (United States), EMA (European Union), other global regulators
Market-Approved Formulations Intravenous (IV), oral capsules, powders
Commercial Name DANTRIUM (per FDA approval)

Market Composition and Dynamics

Current Market Size and Segments

Market Segment Estimated Global Sales (2022) Growth Rate (CAGR, 2023-2028) Notes
Malignant Hyperthermia (MH) ~$150 million 4% Predominantly US, EU regions
Spasticity Management ~$450 million 3.5% MS, cerebral palsy indications
Total ~$600 million

Source: Market Research Future (MRFR), 2023 estimates.

Key Market Drivers

  • Awareness of malignant hyperthermia: Increasing anesthesia safety protocols highlight the need for rapid-acting MH treatments.
  • Growing prevalence of neurological disorders: Multiple sclerosis and cerebral palsy drive demand for spasticity management.
  • Aging global population: This demographic shift raises incidence of neurodegenerative and spasticity-related conditions.
  • Regulatory approvals and off-label uses: Potential for expanding indications.

Market Challenges

  • Limited pipeline: Structurally, DANTRIUM remains the dominant formulation.
  • Existing competition: Generic versions and other spasticity agents like baclofen.
  • Side effect profile: Hepatotoxicity risks constrain broader adoption.

Patent and Regulatory Status

Aspect Details
Patent Status Expired (original patents expired around 1995)
Market Exclusivity No patent protection, open to generics
Regulatory Pathways Orphan drug designation for certain indications (e.g., MH in some regions) provides some exclusivity benefits

Implication: The absence of patent barriers permits competitive pricing and generic entry, potentially compressing margins but increasing volume.


Financial Trajectory and Investment Opportunities

Revenue Trends and Forecasts

Year Estimated Revenue (USD millions) Growth Commentary
2022 ~$600 Stable base with slight growth
2023 ~$630 Assumes 5% growth driven by demand increases and stable generics pricing
2024 ~$660 Introduction of new formulations or indications could boost sales
2025 ~$700 Potential uptake in off-label uses and expanded indications

Projection Methodology: Revenue projections are built on historical data, adjusted for pipeline developments, regulatory changes, and competitive landscape shifts.

Key Revenue Drivers

  • Market penetration in emerging markets: Greater access could drive volume.
  • Potential new formulations: Extended-release versions or injectable options.
  • Off-label uses: Skeletal muscle disorders, neuroleptic malignant syndrome (NMS), and research applications.

Major Expense Considerations

Category Examples Implications
Manufacturing Raw material costs, scale efficiencies Margins depend on production scale and sourcing
Regulatory Compliance GMP, safety monitoring Ongoing, especially in new markets
Research & Development New indications, formulations Historically limited, but necessary for growth

Market Entry and Competition Analysis

Player Market Share Strategic Focus Strengths Weaknesses
Pfizer (DANTRIUM) Leading established manufacturer Maintaining market share Established product, wide distribution Patent expiry suspects, generic competition
Geneva Pharmaceuticals Generic producer Cost leadership Lower prices Less brand recognition
Potential Entrants Biotech firms and startups Reformulation, new indications Innovation potential Regulatory hurdles

Key Competitive Factors

  • Price elasticity in institutional procurement.
  • Safety profile and side effect management.
  • Access to regulatory approvals.
  • Patent and exclusivity strategies.

Potential for Future Growth and Innovation

Strategy Opportunities Risks
Indication Expansion NMS, autism spectrum disorder (off-label), research applications Regulatory delays, safety concerns
Formulation Improvements Extended-release tablets, injectable gels Development costs, uncertain market acceptance
Global Expansion Emerging markets (Asia, Latin America) Market access barriers, pricing pressures

Deep Dive: Regulatory and Policy Environment Impact

Region Policy Notes Impact on DANTRIUM Investment
United States FDA orphan drug designation Potential for orphan benefits and fast track approvals
European Union Centralized approval pathway; reimbursement policies vary Impacted by national health policies
Emerging Markets Price controls, regulatory variability Can limit profit margins but expand volume

SWOT Analysis

Strengths Weaknesses Opportunities Threats
Long-established safety profile Patent expiry, generic competition Expanding indications Patent challenges, generic erosion
Proven efficacy Limited innovation pipeline Market expansion in underserved regions Regulatory delays, side effects

Comparison with Alternative Therapies

Drug/Intervention Market Share Advantages Limitations
Baclofen Dominates spasticity market Oral, inexpensive Side effects, tolerance issues
Tizanidine Emerging competitor Shorter half-life Sedation, hypotension risk
Botulinum toxins Niche, higher-cost Targeted relief Cost, administration complexity

Implication: DANTRIUM maintains relevance due to its proven efficacy, but competition pressures emphasize the need for innovation or indication expansion.


Key Performance Metrics for Investors

Metric Current (2022) Projected (2025) Notes
Market Share >60% in MH treatment Stable or increasing Slight decline expected amid generic entry
Profit Margins ~25-30% (gross) Decline due to price competition Cost control necessary
R&D Investment Minimal historically Potential for targeted R&D To enable new indications

Key Takeaways

  • Market stability: DANTRIUM commands a mature and stable market, with current revenues around $600 million globally.
  • Growth potential: Opportunities exist through indication expansion, particularly for off-label uses such as neurodegenerative disorders and neurological research.
  • Competitive landscape: The absence of patent protection invites generics, compressing margins but expanding volume and access, especially in emerging markets.
  • Regulatory environment: Favorable in regions with orphan drug designations, though markets with price controls pose risks.
  • Innovation avenues: Development of new formulations, such as extended-release tablets, can diversify revenue streams.
  • Investment considerations: A strategic approach targeting indication expansion and formulation enhancement, coupled with cost management, can optimize returns.

FAQs

1. Is DANTRIUM still patent-protected?

No, original patents for Dantrolene sodium expired around 1995. The generic market has since been established, which influences pricing and market dynamics.

2. What are the primary off-label opportunities for DANTRIUM?

Potential off-label uses include neuroleptic malignant syndrome, certain neurodegenerative diseases, and research applications in muscle spasticity beyond approved indications.

3. How does competition from generics affect DANTRIUM's profitability?

The presence of numerous generics exerts downward pressure on prices, which can erode margins but allows for broader geographic access and increased sales volume.

4. What regulatory incentives are available for DANTRIUM development?

In some regions, orphan drug designations provide market exclusivity and incentives that can be advantageous for expanding indications.

5. Are there ongoing research efforts to develop new formulations or indications?

Limited R&D has historically focused on maintenance of existing formulations, but emerging interest in extended-release versions and new indications could generate additional revenue streams.


References

[1] Pharmaceutical Market Research, 2023. "Global Pharmaceutical Market Size & Forecast."
[2] U.S. Food and Drug Administration (FDA). "Dantrolene Sodium (DANTRIUM) Prescribing Information," 2022.
[3] European Medicines Agency (EMA). "Market Authorization for Dantrolene," 2021.
[4] MarketWatch. "Malignant Hyperthermia Treatment Market Size, Share & Trends," 2022.
[5] GlobalData Healthcare. "Neuro Muscular Spasticity Therapeutics Insights," 2023.

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