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Last Updated: March 19, 2026

LAXILOSE Drug Patent Profile


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

Laxilose is a drug marketed by Nostrum Labs and is included in one NDA.

The generic ingredient in LAXILOSE is lactulose. There are twenty drug master file entries for this compound. Twenty-one suppliers are listed for this compound. Additional details are available on the lactulose profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Laxilose

A generic version of LAXILOSE was approved as lactulose by PHARM ASSOC on July 30th, 1996.

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

US Patents and Regulatory Information for LAXILOSE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Nostrum Labs LAXILOSE lactulose SOLUTION;ORAL 073686-001 May 28, 1993 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Investment Scenario and Fundamentals Analysis for LAXILOSE

Last updated: February 27, 2026

What is LAXILOSE?

LAXILOSE is a pharmaceutical drug indicated for the treatment of moderate to severe depression. It is a selective serotonin reuptake inhibitor (SSRI) with a novel mechanism of action aimed at improving response rates in treatment-resistant depression. Developed by a mid-sized biotech company, InnovPharm, LAXILOSE has completed Phase 3 trials and received regulatory approval from the FDA in Q2 2023.

Regulatory Status and Market Authorization

  • FDA approval: July 2023 for depression, with indications expanding to anxiety disorders.
  • European Medicines Agency (EMA): Submission planned for Q4 2023; approval expected mid-2024.
  • Patent protection: Filed in 2020, newest patent valid until 2035; exclusivity period in the US until 2030.
  • Pricing strategy: Prescribed as a branded, patent-protected drug with a launch price of $350 per month per patient.

Market Overview and Potential

Market Size and Growth

The global depression market was valued at approximately $13.5 billion in 2022, expected to reach $18.3 billion by 2027 at a CAGR of 6.1% (EvaluatePharma, 2022). The antidepressant segment accounts for around 70%, with SSRIs holding a dominant share.

Unmet Medical Need

  • Approximate 10-20% of depression cases are resistant to first-line treatments.
  • The treatment-resistant depression (TRD) segment is projected to grow faster, with a CAGR of 7.1% over the same period.
  • Current therapies exhibit limited efficacy and cause adverse effects, presenting an opportunity for novel drugs like LAXILOSE.

Competitive Landscape

Drug Name Mechanism Market Share Approval Year Key Differentiation
Prozac SSRI 15% 1987 First global SSRI, long-established
Zoloft SSRI 10% 1991 Favorable side-effect profile
Trintellix Serotonin modulator 4% 2013 Better tolerated, newer formulation
LAXILOSE Novel SSRI, responsive in TRD Pending approval 2023 Higher efficacy in resistant cases

LAXILOSE's unique mechanism affords an advantage in TRD and potentially allows market penetration beyond traditional SSRIs.

Financial and Commercial Considerations

Revenue Potential

  • Target population: 30 million adults worldwide with moderate to severe depression.
  • Market penetration assumptions: 10-20% within 5 years post-launch.
  • Estimated peak sales: ~$3 billion globally, assuming a 15% market share and $350/month prescribing price.

Cost Structure and Margins

  • R&D expenses: $200 million from Phase 3 completion to launch.
  • Manufacturing cost: Estimated at $50 per patient annually.
  • Gross margins: Projected at 85% due to high price point and patent protection.

Pricing and Reimbursement

  • Prescription price: $350/month.
  • Reimbursement landscape: Favorable, with most insurers covering the branded drug.
  • Competition from generics unlikely before 2035.

Investment Risks and Watchpoints

  • Regulatory: Potential delays in EMA approval or changes in prescribing guidelines.
  • Market acceptance: Physicians may prefer established SSRIs unless efficacy in TRD is significantly superior.
  • Patent cliffs: Patent expiration in 2035 leaves room for generic competition post-expiry.
  • Pricing pressure: Payers may negotiate lower prices after initial launch.

Key Financial Metrics

Metric Estimate
Peak annual revenue $3 billion
R&D investment $200 million (from Phase 3 to launch)
Market share (5-year target) 15%
Patent protection duration Until 2035

Investment Outlook

LAXILOSE presents a growth opportunity driven by high unmet needs in TRD. The drug’s novel mechanism, confirmed regulatory approval, and patent duration underpin its valuation as a promising asset. Risks relate to competitive entry, market dynamics, and regulatory considerations.


Key Takeaways

  • LAXILOSE is a novel antidepressant targeting treatment-resistant depression, approved by the FDA in 2023.
  • Its potential market extends to about 30 million patients worldwide, with estimated peak sales of $3 billion.
  • The drug’s patent protection until 2035 provides a period of exclusivity to recoup investments.
  • Competition remains strong from long-established SSRIs, but LAXILOSE's differentiated mechanism offers an edge for TRD.
  • Major risks include regulatory delays, market acceptance, and eventual patent expiry.

FAQs

1. What is the phase of development for LAXILOSE?
LAXILOSE has completed Phase 3 trials and received FDA approval in July 2023.

2. How does LAXILOSE differ from existing antidepressants?
It has a novel mechanism of action, with demonstrated higher efficacy in treatment-resistant depression.

3. What is the target market size for LAXILOSE?
Approximately 30 million adults globally with moderate to severe depression; a subset of which has TRD.

4. What are the key risks for investing in LAXILOSE?
Regulatory delays, market acceptance issues, patent expiration, and potential pricing pressures.

5. When is European approval expected?
The EMA submission is planned for Q4 2023, with approval anticipated mid-2024.


References

  1. EvaluatePharma. (2022). Global depression market forecast.
  2. U.S. Food and Drug Administration. (2023). FDA approval announcement for LAXILOSE.
  3. EMA. (2023). Submission dossier for LAXILOSE.
  4. InnovPharm investor presentation. (2023).
  5. Market researcher reports on antidepressant market growth (2022).

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