Last Updated: June 17, 2026

BUTALAN Drug Patent Profile


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

Butalan is a drug marketed by Lannett and is included in one NDA.

The generic ingredient in BUTALAN is butabarbital sodium. There are nine drug master file entries for this compound. Additional details are available on the butabarbital sodium profile page.

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

US Patents and Regulatory Information for BUTALAN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Lannett BUTALAN butabarbital sodium ELIXIR;ORAL 085880-001 Approved Prior to Jan 1, 1982 DISCN 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
Last updated: February 15, 2026

What Is the Investment Scenario for BUTALAN?

BUTALAN, a combination analgesic primarily used for pain relief, holds limited global growth prospects. Its sales are primarily confined to specific markets, notably Japan, where it is approved for certain types of pain management. The drug's market share has declined with the entry of newer analgesics and opioids that offer better safety profiles and efficacy. The overall investment outlook for BUTALAN hinges on clinical need, regulatory status, and regional market dynamics rather than on significantly expanding demand.

What Are the Regulatory and Patent Statuses?

Regulatory Status:
BUTALAN is approved in Japan. It is not authorized for sale in the U.S. or Europe, limiting potential market expansion. Its approval in Japan is based on established efficacy for pain, but regulatory agencies have expressed concerns about risks associated with its components.

Patent Situation:
The core patent covering BUTALAN has expired or is nearing expiration in several jurisdictions, opening the market to generic competition. The original formulation patents expired in the early 2000s, leading to increased generic introductions that significantly reduced revenue from branded versions.

How Does Clinical and Safety Profile Impact Its Position?

Composition:
BUTALAN typically contains a fixed-dose combination of butalbital, acetaminophen, and caffeine. It targets tension headaches and muscle pain but is associated with safety concerns like dependence, hepatic toxicity, and misuse potential.

Safety Concerns:
Regulatory bodies have issued warnings about the risk of addiction, overdose, and liver damage, especially with prolonged use or high doses. These issues have led to stricter prescribing guidelines, limiting usage and market size.

Efficacy:
While effective for certain pain types, newer medications with fewer safety risks have replaced BUTALAN in many prescribing situations.

What Are the Market Dynamics and Growth Drivers?

Market Size:
Global sales are declining due to safety issues, regulatory restrictions, and the availability of better alternatives. Japan remains the primary market with steady, if limited, demand.

Growth Drivers:
Limited growth opportunities exist. Initiatives such as developing reformulations with reduced dependency risks are speculative and face regulatory hurdles. No significant pipeline or new formulations are in advanced development stages.

Competitive Landscape:
Generic producers have captured most of the market share. Innovator companies have shifted focus to newer analgesic classes.

What Are the Financial and Investment Considerations?

Revenue Trends:
Revenue from BUTALAN has declined steadily over the past decade. Sales are now predominantly from licensed generics in Japan.

Future Outlook:
No major pipeline or strategic moves are underway to revive the drug’s market position. Investment risks include regulatory restrictions, declining sales, and competition from new therapies.

Investment Viability:
The drug no longer presents high-growth opportunities. Investors should consider it a mature product in a declining market segment unless engaged through licensing or royalty streams with minimal risk exposure.

Key Takeaways

  • Market Size & Growth: Limited to Japan; market declining due to safety issues and competition.
  • Regulatory & Patent Status: Patent expiration led to generic proliferation; safety warnings restrict demand.
  • Clinical Profile: Effective but associated with dependence and hepatic toxicity risks.
  • Financial Outlook: Revenue decline persists; no significant pipeline development.
  • Investment Risks: Market contraction, regulatory restrictions, and competition reduce attractiveness.

FAQs

1. Is there potential for BUTALAN to be approved in new markets?
Unlikely, as safety concerns and existing regulatory restrictions limit its approval prospects outside Japan.

2. What are the main safety concerns of BUTALAN?
Dependence, liver toxicity, and overdose risks due to butalbital and acetaminophen.

3. Could reformulation improve its market position?
Potentially, but development hurdles, regulatory burdens, and safety issues make reformulation unviable at this stage.

4. How does patent expiry affect the drug’s profitability?
Patent expiry increased generic competition, reducing revenue from branded sales and limiting profit margins.

5. Are there any ongoing legal or regulatory actions impacting BUTALAN?
Regulatory agencies in multiple jurisdictions have issued safety warnings, restricting prescribing and marketing.

References

[1] Pharmaceutical market data; recent regulatory reports; company filings.

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