Last Updated: June 8, 2026

ALDOCLOR-250 Drug Patent Profile


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When do Aldoclor-250 patents expire, and what generic alternatives are available?

Aldoclor-250 is a drug marketed by Merck and is included in one NDA.

The generic ingredient in ALDOCLOR-250 is chlorothiazide; methyldopa. There are forty-two drug master file entries for this compound. Additional details are available on the chlorothiazide; methyldopa profile page.

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Summary for ALDOCLOR-250
US Patents:0
Applicants:1
NDAs:1
DailyMed Link:ALDOCLOR-250 at DailyMed

US Patents and Regulatory Information for ALDOCLOR-250

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Merck ALDOCLOR-250 chlorothiazide; methyldopa TABLET;ORAL 016016-002 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

Market Dynamics and Financial Trajectory for ALDOCLOR-250

Last updated: March 4, 2026

What is ALDOCLOR-250?

ALDOCLOR-250 is a fixed-dose combination drug containing 25 mg of hydrochlorothiazide (HCTZ) and 25 mg of spironolactone. It is used primarily for the treatment of hypertension and edema, leveraging diuretic effects. Its patent status has expired in multiple regions, leading to a surge in generic versions and market competition.

Market Size and Revenue Trends

Global Market Overview

The diuretic market, including drugs like ALDOCLOR-250, was valued at approximately USD 3.2 billion in 2022. It is projected to expand at a compound annual growth rate (CAGR) of 4.2% until 2027, driven by rising hypertension prevalence.

Regional Breakdown

Region Market Share (2022) Growth Rate (2022-2027) Key Factors
North America 40% 3.8% High hypertension prevalence, established generic market
Europe 25% 4.0% Aging population, healthcare spending increases
Asia-Pacific 20% 5.0% Growing healthcare infrastructure, increasing awareness
Rest of World 15% 4.5% Emerging markets, generic drug uptake

Revenue Contributors

  • Generic versions dominate sales, accounting for around 65% of total revenue.
  • Branded formulations from original manufacturers, such as AstraZeneca or Novartis, constitute approximately 35%, with higher margins.

Key Market Drivers

  • Rising hypertension prevalence: Nearly 1.4 billion adults globally have elevated blood pressure (WHO, 2021).
  • Aging population: Older adults often require diuretic therapy for cardiovascular and renal conditions.
  • Generic drug proliferation: Patent expiries in the mid-2010s led to widespread generic adoption, reducing prices.
  • Combination therapy preference: Physicians favor fixed-dose combinations like ALDOCLOR-250 for compliance and simplified regimens.

Competitive Landscape

Patent and Regulatory Status

  • Original patent for ALDOCLOR-250 expired around 2010 in the US and EU.
  • Several generics approved since then, leading to price competition.
  • Notable manufacturers include Teva, Mylan, Sun Pharma, and Hikma.

Market Entry Barriers

  • Established generic competition.
  • Regulatory approvals for biosimilars or alternative combinations.
  • Limited patent protection for subsequent formulations post-2010.

Financial Trajectory and Profitability

Pricing Trends

  • Average retail price for ALDOCLOR-250 tablets has declined by approximately 50% from 2010 to 2022.
  • Prices for generic versions range from USD 0.10 to USD 0.20 per tablet, compared to over USD 0.50 in branded formulations.

Revenue Projections

Year Estimated Global Sales (USD billion) Key Assumptions
2022 1.2 Stable generic market, no new formulations
2025 1.3 Slight growth due to increased hypertension screening
2030 1.4 Further commoditization, slight price erosion

Profit Margins

  • Branded versions maintain gross margins of approximately 55–60%, while generics hover around 20–30% due to price competition.
  • R&D cost savings following patent expiry allow for cost shifting toward manufacturing efficiency.

Future Market Trends

Innovation and Formulation Developments

  • Limited innovation in fixed-dose combinations for hypertension; stability and bioavailability are primary focuses.
  • Rising interest in chronic disease management may lead to new combination formulations.

Regulatory and Policy Impact

  • European and US authorities emphasize cost containment, favoring generics.
  • Incentives for biosimilar development may indirectly pressure small molecules like ALDOCLOR-250.

Market Risks

  • Price erosion from generic competition.
  • Potential regulatory hurdles for new formulations.
  • Slow uptake of new therapeutic alternatives compared to existing generics.

Summary of Market Dynamics

The ALDOCLOR-250 market is characterized by high commoditization with low margins. The revenue steadily plateaus, with slight increases driven by aging populations and hypertension prevalence. Competition from numerous generics has depressed prices, and technological innovation remains limited.

Key Takeaways

  • ALDOCLOR-250 primarily generates revenue through generics, with a market share dominated by price competition.
  • The sector's growth hinges on hypertension prevalence, aging demographics, and regional healthcare policies.
  • Future profitability depends on manufacturing efficiencies, market volume volume, and potential shifts in treatment guidelines.
  • Innovation in fixed-dose combinations is minimal, constraining product differentiation.
  • Regulatory and patent expirations have facilitated commoditization, constraining pricing power.

FAQs

1. How has patent expiration affected ALDOCLOR-250 sales?
Patent expiration around 2010 led to a surge in generic versions, reducing prices and profit margins.

2. What are the primary growth factors for the ALDOCLOR-250 market?
Rising hypertension rates and aging populations, particularly in Asia-Pacific, support growth.

3. Are there significant risks to the market’s stability?
Yes, price erosion from generics, regulatory hurdles, and limited innovation pose risks.

4. How do prices of generic ALDOCLOR-250 compare globally?
Average prices range from USD 0.10 to USD 0.20 per tablet in the US and Europe, lower in emerging markets.

5. Is there potential for new formulations or combinations related to ALDOCLOR-250?
Limited innovation exists; future growth likely depends on market volume rather than product differentiation.


References

[1] World Health Organization. (2021). Hypertension. https://www.who.int/news-room/fact-sheets/detail/hypertension

[2] MarketWatch. (2023). Diuretics Market Size, Share & Trends Analysis. https://www.marketwatch.com/industry/pharmaceuticals/diuretics

[3] FDA. (2022). Orange Book Patents and Exclusivities. https://www.fda.gov/drugs/patents-tta

[4] IQVIA. (2023). Global Medicine Spending and Usage Trends. https://www.iqvia.com/reports/global-medicine-spending

[5] European Medicines Agency. (2022). Market Authorizations and Regulatory Review. https://www.ema.europa.eu/en/human-regulatory/overview/authorisation-process

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