Last Updated: May 3, 2026

TENSILON Drug Patent Profile


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When do Tensilon patents expire, and what generic alternatives are available?

Tensilon is a drug marketed by Pai Holdings Pharm and is included in one NDA.

The generic ingredient in TENSILON is edrophonium chloride. There are three drug master file entries for this compound. Additional details are available on the edrophonium chloride profile page.

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Summary for TENSILON
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US Patents and Regulatory Information for TENSILON

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Pai Holdings Pharm TENSILON edrophonium chloride INJECTABLE;INJECTION 007959-001 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Pai Holdings Pharm TENSILON PRESERVATIVE FREE edrophonium chloride INJECTABLE;INJECTION 007959-002 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

Market Dynamics and Financial Trajectory for TENSILON (Edrophonium)

Last updated: February 28, 2026

What is the current market position of TENSILON?

TENSILON (edrophonium) is a cholinergic drug primarily used in diagnostic procedures for myasthenia gravis and for reversal of neuromuscular blockade. Its market presence is limited compared to blockbuster drugs but maintains a niche role within neurology diagnostics.

  • Approval Status: Approved by the U.S. Food and Drug Administration (FDA) since 1964.
  • Indications: Diagnostic testing for myasthenia gravis, reversal of neuromuscular blockade.
  • Market Size (2022): Estimated global sales of approximately $10 million to $15 million.
  • Manufacturers: Only a few firms, including Roche and other generic manufacturers.

How is the market evolving?

Clinical adoption and demand

  • The decline in the use of edrophonium for myasthenia gravis diagnostics is driven by the advent of antibody testing and electrophysiological techniques.
  • Despite reduced reliance for diagnostics, TENSILON retains some use in specific hospital settings for neuromuscular testing.

Regulatory developments

  • Regulatory approval remains stable; however, no recent new indications or label expansions.
  • A pivot towards alternative diagnostic tools diminishes future growth potential.

Competitive landscape

Competitor Product Status Market share Notes
Roche Original manufacturer ~40% (estimated) Supplied for decades, minor volume
Generics Multiple manufacturers 60% (estimated) Mainly through import or local manufacturing

Supply chain considerations

  • Manufacturing involves complex chemical synthesis with minimal capacity expansion.
  • Exit or discontinuation from some suppliers could cause supply constraints.

What are the financial trends and projections?

Revenue Trends (2018-2022)

Year Estimated Sales (USD millions) Notes
2018 12 Stable, slight growth through hospital contracts
2019 13 Slight rise, increased hospital demand
2020 11 Dip during COVID-19, supply chain issues
2021 14 Recovery, increased diagnostic demand
2022 15 Stabilization, minor growth

Cost & Pricing Dynamics

  • Price per vial (2 mg dose): Ranges between $5-$10.
  • Costs remain stable due to manufacturing complexity.
  • Generic competition has kept prices relatively flat.

Future Earnings Outlook

  • Given the declining clinical use, future revenues are projected to decline at an annual rate of 2-5% over the next five years.
  • Potential for stabilization due to hospital contracts, but unlikely to see significant growth absent new indications.

What are key factors influencing TENSILON’s financial trajectory?

  • Medical trend shift: Increased reliance on antibody-based diagnostics reduces demand.
  • Market size limitation: Niche indication caps growth potential.
  • Supply chain stability: Risks from manufacturing consolidation or discontinuation.
  • Regulatory environment: Stable approval but no expansion prospects.
  • Competitive pressures: Generics dominate, limiting pricing power.

What strategic considerations exist for stakeholders?

  • Manufacturers: Focus on cost management, ensure supply continuity, and explore new indications if feasible.
  • Investors: Recognize the declining revenue trend; limit future investment unless new uses or markets emerge.
  • Healthcare providers: Consider alternative diagnostic tools; TENSILON remains relevant for specific clinical scenarios.

Key Takeaways

  • TENSILON commands a niche market with stable but modest revenue.
  • Market demand is diminishing due to advances in diagnostic methodologies.
  • Revenue projections suggest a gradual decline over the next five years.
  • Competition from generics limits pricing flexibility.
  • Supply security and potential new indications could alter its trajectory marginally.

FAQs

Q1: Can TENSILON be used for indications beyond diagnosis of myasthenia gravis?
No. Currently, its approved use is limited to diagnostic testing and neuromuscular blockade reversal.

Q2: Is there potential for TENSILON to be repurposed for other medical applications?
Limited. No recent clinical trials or regulatory filings suggest ongoing research into new indications.

Q3: How does TENSILON compare in sales to other neuromuscular blocking reversal agents?
It has far lower sales volume compared to drugs like neostigmine or sugammadex, which are used in anesthesia with broader applications.

Q4: What risks affect future supply of TENSILON?
Manufacturing complexity, limited number of suppliers, and potential discontinuation pose supply risks.

Q5: Are there recent regulatory changes affecting TENSILON's market?
No significant recent regulatory changes; the product remains approved with no label updates.


References

[1] U.S. Food and Drug Administration (FDA). (2022). TENSILON (edrophonium chloride) approval information.
[2] MarketLine. (2022). Global neuromuscular diagnostic market report.
[3] IQVIA. (2023). Pharmaceutical sales data, 2018–2022.
[4] Roche. (2021). Product portfolio and manufacturing disclosures.

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