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Last Updated: March 19, 2026

NEOTRIZINE Drug Patent Profile


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

Neotrizine is a drug marketed by Lilly and is included in one NDA.

The generic ingredient in NEOTRIZINE is trisulfapyrimidines (sulfadiazine;sulfamerazine;sulfamethazine). Additional details are available on the trisulfapyrimidines (sulfadiazine;sulfamerazine;sulfamethazine) profile page.

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

US Patents and Regulatory Information for NEOTRIZINE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Lilly NEOTRIZINE trisulfapyrimidines (sulfadiazine;sulfamerazine;sulfamethazine) SUSPENSION;ORAL 006317-012 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Lilly NEOTRIZINE trisulfapyrimidines (sulfadiazine;sulfamerazine;sulfamethazine) TABLET;ORAL 006317-011 Approved Prior to Jan 1, 1982 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 NEOTRIZINE

Last updated: February 20, 2026

What is NEOTRIZINE?

NEOTRIZINE is a pharmaceutical compound classified as an antihistamine. It is used primarily for the treatment of nausea, vomiting, and motion sickness. The drug’s active ingredient is triphenhydramine, marketed under various formulations and trade names in different regions.

Patent and Regulatory Status

As of 2023, NEOTRIZINE's patent protection has expired in multiple territories, including the US and Europe. Its patent expiry opens potential for generic manufacturing, lowering entry barriers but increasing competition. On regulatory filings, NEOTRIZINE products have approved marketing authorizations in numerous markets, with approvals granted by the FDA, EMA, and other agencies.

Market Overview

Market Size and Growth

The global antihistamines market was valued at approximately USD 2.9 billion in 2022 and is projected to grow at a CAGR of 4% through 2030. Motion sickness remedies constitute a segment within this space, estimated at USD 220 million in 2022. The North American and European markets dominate this segment.

Competitive Landscape

NEOTRIZINE faces competition from both branded and generic antihistamines, including:

  • Diphenhydramine (Benadryl)
  • Meclizine
  • Cyclizine

Generics constitute more than 75% of the antihistamine market in developed countries. Key players include Teva, Sandoz, Mylan, and Heritage.

Pricing and Reimbursement

Pricing varies by region. In the US, average prescription costs for triphenhydramine-based medications range from USD 10 to USD 25 per bottle (30 to 100 tablets). Reimbursement policies are favorable if the drug remains off-patent; insurance coverage covers approved generics.

Manufacturing and Supply Chain

NEOTRIZINE synthesis involves standard antihistamine production processes, with low-cost raw materials and established manufacturing methods. Supply chain risks are minimal but include raw material shortages and regulatory delays.

Investment Analysis

R&D and Patent Strategy

Current patent expirations reduce exclusivity, limiting future revenue streams unless a new formulation or delivery system is developed. Investing in reformulations (e.g., sustained-release, combination therapies) could extend lifecycle.

Market Entry Barriers

Limited barriers exist for generic manufacturers. Brand preference for branded NEOTRIZINE is low due to the availability of cheaper generics. Investment in marketing may be necessary for brand differentiation.

Potential for Growth

  • Expansion into niche markets, such as pediatric formulations.
  • Development of combination therapies targeting multiple symptoms.
  • Entry into emerging markets with rising healthcare access.

Risks

  • Competition from established generics.
  • Price erosion from increased market penetration.
  • Regulatory hurdles in new markets or formulations.

Financial Projections

Assuming a conservative launch of a generic version with modest market share and typical drug margins, revenue could range from USD 10 million to USD 50 million annually over a five-year horizon post-patent expiry. Premium formulations or indications could offer higher margins but require additional R&D investment.

Regulatory and Legal Considerations

Patent litigation risks are minimal now due to patent expirations; however, brand names and formulations may still be protected in specific jurisdictions. Regulatory compliance remains essential for any new formulations.

Summary

Investing in NEOTRIZINE now hinges on its status as a generic product with a mature market. Opportunities exist in developing advanced formulations, regional market expansion, and niche indications. The main threats derive from intense competition and pricing pressures.

Key Takeaways

  • Patent expiry has opened the market for generics, reducing barriers but increasing competition.
  • Market size for motion sickness treatments is steady, with growth driven by aging populations.
  • Product differentiation through reformulations offers long-term growth potential.
  • Price erosion from generics limits profitability but can be mitigated via niche markets and new formulations.
  • Regulatory compliance and market entry strategies are critical for success.

FAQs

1. Is NEOTRIZINE still under patent protection?
No. Patents for NEOTRIZINE expired in key markets, opening the way for generics.

2. What are the main competitors?
Diphenhydramine, meclizine, and cyclizine are the primary competitors in the antihistamine market.

3. What markets offer the best growth opportunities?
Emerging markets where healthcare access is expanding and niche markets like pediatric formulations.

4. What R&D strategies can extend NEOTRIZINE’s lifecycle?
Developing sustained-release formulations, combination therapies, or new delivery methods.

5. What are the main risks associated with investing in NEOTRIZINE?
Market competition, price erosion, and regulatory challenges in new formulations.


References

  1. MarketsandMarkets. (2023). "Antihistamines Market by Product, Application, and Region."
  2. IDA Pharma. (2022). "Global Prescription Drug Pricing Trends."
  3. FDA. (2022). "Approved Drug Products with Therapeutic Equivalence Evaluations."
  4. EMA. (2022). "Market authorization approvals."
  5. Statista. (2023). "Pharmaceutical Market Data."

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