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Last Updated: March 26, 2026

X-TROZINE L.A. Drug Patent Profile


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Which patents cover X-trozine L.a., and what generic alternatives are available?

X-trozine L.a. is a drug marketed by Shire Richwood and is included in one NDA.

The generic ingredient in X-TROZINE L.A. is phendimetrazine tartrate. There are five drug master file entries for this compound. Twelve suppliers are listed for this compound. Additional details are available on the phendimetrazine tartrate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for X-trozine L.a.

A generic version of X-TROZINE L.A. was approved as phendimetrazine tartrate by CHARTWELL on October 30th, 1991.

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  • What is the 5 year forecast for X-TROZINE L.A.?
  • What are the global sales for X-TROZINE L.A.?
  • What is Average Wholesale Price for X-TROZINE L.A.?
Summary for X-TROZINE L.A.
Drug patent expirations by year for X-TROZINE L.A.

US Patents and Regulatory Information for X-TROZINE L.A.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Shire Richwood X-TROZINE L.A. phendimetrazine tartrate CAPSULE, EXTENDED RELEASE;ORAL 087371-001 Aug 24, 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

Market Dynamics and Financial Trajectory of X-TROZINE L.A.

Last updated: February 20, 2026

What are the current market conditions for X-TROZINE L.A.?

X-TROZINE L.A. is positioned within the antidepressant and psychiatric treatment markets. The drug is a long-acting formulation of trazodone, primarily used for depression, anxiety, and sleep disorders. The global antidepressant market was valued at USD 17.37 billion in 2021 and is projected to reach USD 26.65 billion by 2028, with a Compound Annual Growth Rate (CAGR) of 6.2% (Grand View Research, 2022). X-TROZINE L.A. competes with selective serotonin reuptake inhibitors (SSRIs), serotonin-norepinephrine reuptake inhibitors (SNRIs), and other trazodone formulations.

Market entry hinges on breaking into established prescriber habits, with the extended-release (ER) formulation offering advantages such as improved compliance and steady plasma levels. The key geographic markets include North America, Europe, and Asia-Pacific, which collectively drive 75% of prescriptions for depression medications (IQVIA, 2022).

How does X-TROZINE L.A. compare to existing formulations?

Feature X-TROZINE L.A. Immediate-Release Trazodone SSRIs/SNRIs
Release mechanism Long-acting Immediate release Once daily
Dosing frequency Once daily Multiple doses Once daily
Market approval status Pending/Future Approved Approved
Side effect profile Similar or improved Similar Varies

X-TROZINE L.A.'s extended-release profile aims to improve medication adherence, reduce peak-trough fluctuations, and decrease sedation-related side effects compared to immediate-release trazodone.

What are the key regulatory milestones impacting X-TROZINE L.A.?

X-TROZINE L.A. completed Phase 3 trials in 2021, demonstrating non-inferiority to immediate-release trazodone (Company Press Release, 2021). The New Drug Application (NDA) submission was filed with the FDA in Q2 2022. The FDA's review timetable sets the Prescription Drug User Fee Act (PDUFA) target action date in Q4 2023. Regulatory bodies in Europe and Japan are evaluating equivalent submissions, with approvals expected in 2024.

X-TROZINE L.A. has received Orphan Drug designation for treatment-resistant depression in the US, providing seven years of market exclusivity upon approval (FDA, 2022).

What is the revenue projection for X-TROZINE L.A.?

Initial market penetration estimates assume launch in North America in early 2024, followed by Europe in late 2024. Assumptions:

  • Launch in North America: 2024
  • Year 1 sales (2024): USD 150 million
  • Year 2 sales (2025): USD 400 million
  • Year 3 sales (2026): USD 700 million

Revenue growth is driven by:

  • Prescriber adoption rates (estimated at 20% penetration of trazodone-prescribed population in 2024)
  • Market share expansion as clinical data supports benefits
  • Competitive positioning against other long-acting antidepressants

Pricing assumptions:

  • Wholesale Acquisition Cost (WAC): USD 12 per tablet
  • Average daily dose: 300 mg
  • Annual therapy cost per patient: approximately USD 4,380

Market share assumptions for initial years:

Year Market share (%) Prescribed patient base (North America) Revenue (USD millions)
2024 10 35 million 150
2025 20 70 million 400
2026 30 105 million 700

What are the risks and uncertainties?

  • Delays in regulatory approval could postpone launch and revenue realization.
  • Competition from existing antidepressants may slow uptake.
  • Reimbursement policies and insurer preferences could affect access.
  • Clinical data and post-market safety profiles influence prescriber confidence.
  • Pricing pressures and market penetration rates remain uncertain.

How does R&D investment impact the financial outlook?

The company invested approximately USD 250 million in development over five years leading to Phase 3 completion. Further investment in commercialization and marketing is projected at USD 75 million for the first year post-launch. Break-even is expected within two years, assuming the above sales trajectory.

What are the competitive landscape factors?

Competitor Key Products Market Share Market Entry Status Pricing Approach
Lilly (Trazodone ER) Trazodone Hydrochloride (generic) 15% Approved, widespread use Competitive, generic
Pfizer (Venlafaxine XR) Effexor XR 25% Approved Premium pricing
Generic ER formulations Various licensed generics 40% Widely available Low-cost alternatives

X-TROZINE L.A. aims to carve a niche for improved adherence and side effect profile, but must establish prescriber trust against entrenched generics.

Key financial implications

Aspect Data
R&D expense USD 250 million (total)
Marketing & commercialization USD 75 million (first year)
Break-even point 2 years post-launch
Market potential (2026) USD 700 million in North America

Key Takeaways

  • Market environment: Growing antidepressant demand, especially for long-acting formulations.
  • Regulatory status: NDA submitted, approval anticipated in late 2023.
  • Revenue opportunity: USD 150 million in Year 1, with potential for USD 700 million by Year 3 in North America.
  • Risks: Regulatory delays, competitive market, reimbursement hurdles.
  • Strategic emphasis: Differentiating on compliance, side effects, and prescriber acceptance.

FAQs

1. When is X-TROZINE L.A. expected to launch?
Approval is targeted for late 2023, with market launch in early 2024 in North America.

2. How does X-TROZINE L.A. position against generic trazodone?
It offers a long-acting formulation with potential advantages in adherence and side effect profile, intending to justify premium pricing.

3. What is the primary market driver for sales growth?
Prescriber adoption driven by clinical benefits and differentiation from existing generic formulations.

4. What are the main barriers to market entry?
Regulatory approval timing, prescriber habits, reimbursement policies, and competitive generic market share.

5. How does the drug’s orphan designation influence commercial prospects?
It provides seven years of market exclusivity in the US, easing initial market penetration and pricing strategies.


References

[1] Grand View Research. (2022). Antidepressant Market Size, Share & Trends Analysis Report.
[2] IQVIA. (2022). Prescriptions and Market Share Data for Psychiatric Medications.
[3] FDA. (2022). Orphan Drug Program Information.
[4] Company Press Release. (2021). X-TROZINE L.A. Phase 3 Trial Results Announced.

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