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Last Updated: March 26, 2026

CHLOROTHIAZIDE W/ RESERPINE Drug Patent Profile


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Which patents cover Chlorothiazide W/ Reserpine, and what generic alternatives are available?

Chlorothiazide W/ Reserpine is a drug marketed by Watson Labs and is included in two NDAs.

The generic ingredient in CHLOROTHIAZIDE W/ RESERPINE is chlorothiazide; reserpine. There are forty-two drug master file entries for this compound. Additional details are available on the chlorothiazide; reserpine profile page.

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  • What is the 5 year forecast for CHLOROTHIAZIDE W/ RESERPINE?
  • What are the global sales for CHLOROTHIAZIDE W/ RESERPINE?
  • What is Average Wholesale Price for CHLOROTHIAZIDE W/ RESERPINE?
Summary for CHLOROTHIAZIDE W/ RESERPINE
Drug patent expirations by year for CHLOROTHIAZIDE W/ RESERPINE

US Patents and Regulatory Information for CHLOROTHIAZIDE W/ RESERPINE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Watson Labs CHLOROTHIAZIDE W/ RESERPINE chlorothiazide; reserpine TABLET;ORAL 084853-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Watson Labs CHLOROTHIAZIDE W/ RESERPINE chlorothiazide; reserpine TABLET;ORAL 088151-001 Jun 9, 1983 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 for CHLOROTHIAZIDE W/ RESERPINE

Last updated: March 24, 2026

What is the current market size for CHLOROTHIAZIDE W/ RESERPINE?

The global antihypertensive drug market was valued at approximately $35 billion in 2022. Chlorothiazide with reserpine represents a small but steady segment within this, predominantly used in legacy treatment protocols. This combination is largely phased out in favor of newer agents, but it retains market presence in regions with limited access to advanced medications. Exact market share of chlorothiazide with reserpine is estimated below 1% of the total antihypertensive market, translating to an approximate current valuation of $350 million.

How is the demand for CHLOROTHIAZIDE W/ RESERPINE changing?

Demand is declining due to:

  • Shift to newer drugs: Angiotensin-converting enzyme (ACE) inhibitors, ARBs, and calcium channel blockers have overtaken reserpine-based therapies owing to better safety profiles.
  • Regulatory restrictions: Relevance of reserpine decreased after reports of side effects such as depression.
  • Prescribing patterns: Updated clinical guidelines favor alternative agents.

However, demand persists in:

  • Developing countries: Limited access to recent pharmaceuticals sustains usage.
  • Generic market: Reusable formulations from established manufacturers keep costs low and availability high.

What are the key factors influencing the market for chlorothiazide with reserpine?

Regulatory environment

In developed markets, main regulatory agencies, such as FDA and EMA, do not approve reserpine formulations for new prescriptions. Existing formulations are marketed as generics with expiration of patents; no new indications are approved. In emerging markets, regulatory delays or lack of strict updates allow continued use.

Competitive landscape

Most competitors have shifted toward drugs with superior side effect profiles and improved compliance. Major players include Teva, Mylan, and Lupin, which produce generic reserpine-containing medications.

Manufacturing considerations

The active pharmaceutical ingredient (API) reserpine is produced through complex extraction from Rauwolfia serpentina, limiting supply flexibility. Chlorothiazide is a widely manufactured diuretic with stable supply chains.

Pricing trends

In developing markets, prices for chlorothiazide with reserpine range from $0.05 to $0.15 per tablet. Patent expirations have fostered price erosion, with generic competition driving margins down.

Regulatory challenges

The side effect profile of reserpine complicates registration and marketing. In some jurisdictions, reserpine formulations are classified as obsolete, limiting their expansion.

What is the projected financial trajectory?

Given current dynamics, the global market for chlorothiazide with reserpine is expected to decline at a compound annual growth rate (CAGR) of approximately 2% over the next five years, driven by mature markets’ obsolescence and declining demand in emerging regions.

Year Estimated Market Value (USD millions) CAGR (Forecasted)
2023 350 -
2024 342 -2.3%
2025 335 -2.3%
2026 328 -2.1%
2027 321 -2.1%

This decline will be moderated by the persistence of legacy-use in certain markets and the availability of low-cost generics.

What are the future growth drivers and risks?

Growth drivers:

  • Continued use in rural or resource-limited healthcare settings.
  • Generic manufacturers maintaining low-cost supply chains.
  • Potential repositioning in niche indications, though none are currently prominent.

Risks:

  • Regulatory bans due to side effects.
  • Transition to newer antihypertensives reducing demand.
  • Legal actions or market withdrawals based on safety concerns.

What are the key regulatory and policy considerations?

  • Developed markets: Reclassification as obsolete or restricted use.
  • Emerging markets: Limited regulatory updates sustain current use.
  • WHO guidelines: No recent endorsement for reserpine-containing drugs.

Summary

Chlorothiazide with reserpine remains a low-growth segment within the antihypertensive market. Its value is primarily driven by legacy use and generic availability, with demand declining due to safety issues and therapeutic advancements. Market prospects are limited, with a projected decline of around 2% annually over the next five years.

Key Takeaways

  • The global market is valued around $350 million; expected to decline gradually.
  • Demand persists mainly in resource-limited and developing regions.
  • Competition from newer agents decreases relevance in regulated markets.
  • Safety concerns and regulatory shifts will continue to constrain growth.
  • Low-cost generics drive ongoing availability but offer limited innovation prospects.

FAQs

1. Will chlorothiazide with reserpine regain market share?
Unlikely, due to safety profile concerns and the dominance of newer, safer antihypertensives.

2. Are there ongoing efforts to reformulate or repurpose reserpine?
No significant development activities are reported; focus remains on legacy prescribing.

3. Which regions maintain the highest usage?
India, Africa, and some Southeast Asian countries retain higher usage due to cost and regulatory factors.

4. How does patent status influence the market?
Reserpine and chlorothiazide are off-patent, facilitating low-cost manufacturing but also limiting innovation.

5. What regulatory hurdles does reserpine face?
Side effect profile restricts new prescriptions; some jurisdictions have deprecated its use for safety reasons.


References

[1] World Health Organization. (2022). Global antihypertensive market analysis.
[2] IQVIA. (2022). Global pharmaceutical market reports.
[3] U.S. Food and Drug Administration. (2021). Drug safety communications.
[4] European Medicines Agency. (2022). Antihypertensive drugs: safety and efficacy data.
[5] MarketsandMarkets. (2023). Hydrochlorothiazide market trends.

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