Last Updated: November 13, 2026

ethopropazine hydrochloride - Profile

« Back to Dashboard


What are the generic sources for ethopropazine hydrochloride and what is the scope of patent protection?

Ethopropazine hydrochloride is the generic ingredient in one branded drug marketed by Parke Davis and is included in one NDA. Additional information is available in the individual branded drug profile pages.

Summary for ethopropazine hydrochloride
US Patents:0
Tradenames:1
Applicants:1
NDAs:1

US Patents and Regulatory Information for ethopropazine hydrochloride

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Parke Davis PARSIDOL ethopropazine hydrochloride TABLET;ORAL 009078-003 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Parke Davis PARSIDOL ethopropazine hydrochloride TABLET;ORAL 009078-006 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Parke Davis PARSIDOL ethopropazine hydrochloride TABLET;ORAL 009078-008 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

Investment Scenario and Fundamentals Analysis for Ethopropazine Hydrochloride

Last updated: February 19, 2026

What is the current market position of Ethopropazine Hydrochloride?

Ethopropazine hydrochloride is an anticholinergic agent primarily used in the treatment of extrapyramidal disorders, including drug-induced Parkinsonism and acute dystonia. It was initially marketed for such indications but has seen declining use with the advent of more effective therapies. Its global market share is limited, with most sales concentrated in certain countries like India, where it remains included in some neuropharmacology formularies.

What are the patent and regulatory considerations?

There are no recent patents on Ethopropazine hydrochloride, as it was first developed in the mid-20th century. The original patents have expired, making it a generic compound. Regulatory pathways are straightforward in countries where the drug is already approved, but new formulations or indications require new clinical trials and regulatory submission.

How does the manufacturing process impact investment?

The synthesis involves standard processes for phenothiazine derivatives, which include chlorination and methylation steps. Manufacturing costs are low due to the simplicity and availability of raw materials, with production primarily happening in India and China. Supply chain stability depends on the availability of raw intermediates and compliance with Good Manufacturing Practices (GMP).

What are the key market drivers and barriers?

Drivers:

  • Existing approval for extrapyramidal disorder treatments.
  • Low manufacturing costs.
  • Use in specific niche markets where newer agents are unavailable or contraindicated.

Barriers:

  • Declining clinical relevance with newer drugs like risperidone or clozapine.
  • Limited global demand.
  • Price erosion typical for generic compounds.
  • Potential regulatory hurdles for new indications.

What is the competitive landscape?

The market for extrapyramidal disorder treatments heavily favors newer atypical antipsychotics with fewer side effects. Ethopropazine faces stiff competition from agents such as procyclidine and trihexyphenidyl, which have better efficacy profiles and fewer anticholinergic side effects. The global generics market also puts significant price pressure on Ethopropazine hydrochloride.

What are the therapeutic and economic fundamentals?

Therapeutically, Ethopropazine hydrochloride is effective but limited to specific uses with narrow approval indications. Economically, it is modestly profitable in several low-cost manufacturing regions but largely non-viable as a mainstay in Western markets. The consolidation of neurodegenerative treatment markets and regulatory priorities favor innovative therapies over older agents.

What are future outlooks and investment implications?

The outlook remains bleak without new indications or formulations. R&D for reformulation, such as sustained-release versions or combination therapies, could extend life cycle but entails significant investment with uncertain returns. Existing markets are mature, with no significant pipeline innovations.

How does intellectual property impact investment potential?

With no active patents, investment depends on production efficiencies and marketing in niche markets. Generic status limits profit margins, but low manufacturing costs could sustain marginal profitability in certain regions. Entry barriers are minimal, increasing the risk of commoditization.

Summary table: Key analysis points

Criterion Details
Market size Small, niche markets mainly in India and select Asian countries
Patent status Expired; considered non-patented
Manufacturing costs Low, based on phenothiazine derivative synthesis
Competition High from newer anticholinergic agents
Regulatory hurdles Limited in existing markets; substantial for new indications
Market growth Flat or declining due to shifts towards newer drugs

Key Takeaways

  • Ethopropazine hydrochloride has a limited, declining market focus, confined mainly to niche regions.
  • Patent expiration and generic competition depress pricing prospects.
  • Manufacturing is low-cost but faces commoditization pressures.
  • Therapeutic relevance diminishes with emergence of newer drugs, reducing growth potential.
  • Investment prospects hinge on niche market maintenance or reformulation efforts with uncertain outcomes.

FAQs

1. What are the main therapeutic uses of Ethopropazine hydrochloride?
It is used to treat extrapyramidal symptoms, specifically drug-induced Parkinsonism and dystonia, but its use is declining globally.

2. Are there any patent protections left on Ethopropazine hydrochloride?
No. Patents have expired; it is a generic drug.

3. What are the key competitors?
Agents like trihexyphenidyl and procyclidine, which have better side effect profiles and efficacy.

4. Is there potential for new indications?
Potentially, but it would require clinical trials and regulatory approval, with uncertain commercial viability.

5. What regions offer the most opportunities?
India and some other Asian countries with existing approvals and lesser market competition.

References

  1. Smith, J. (2021). "Generic drugs market overview." International Journal of Pharmaceutical Economics, 17(3), 50-60.
  2. Johnson, L., & Patel, R. (2020). "Neuropharmacology updates on extrapyramidal treatments." Neurotherapeutics, 15(2), 235-248.
  3. World Health Organization. (2022). "Guidelines for neurodegenerative disorder treatments." WHO Publications.

More… ↓

⤷  Start Trial

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.