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Last Updated: December 15, 2025

ALDOCLOR-150 Drug Patent Profile


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Which patents cover Aldoclor-150, and when can generic versions of Aldoclor-150 launch?

Aldoclor-150 is a drug marketed by Merck and is included in one NDA.

The generic ingredient in ALDOCLOR-150 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-150
US Patents:0
Applicants:1
NDAs:1
DailyMed Link:ALDOCLOR-150 at DailyMed
Drug patent expirations by year for ALDOCLOR-150

US Patents and Regulatory Information for ALDOCLOR-150

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Merck ALDOCLOR-150 chlorothiazide; methyldopa TABLET;ORAL 016016-001 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

Market Dynamics and Financial Trajectory for ALDOCLOR-150

Last updated: July 28, 2025


Introduction

ALDOCLOR-150, a combination antihypertensive medication comprising spironolactone and hydrochlorothiazide, remains a significant asset within the cardiovascular pharmacopeia. Its unique pharmacological profile offers strategic opportunities amidst evolving market factors. This analysis delineates the current market dynamics, regulatory landscape, competitive positioning, and financial outlook pertinent to ALDOCLOR-150, providing essential insights for stakeholders navigating the complex pharmaceutical environment.


Market Overview

Therapeutic Indication and Clinical Positioning

ALDOCLOR-150 primarily serves patients with hypertension and edema associated with congestive heart failure, contributing to symptomatic relief and cardiovascular risk reduction. Its diuretic combination offers synergistic effects—potassium-sparing action of spironolactone contrasts with the potent natriuretic effects of hydrochlorothiazide—enhancing efficacy and tolerability. The medication’s broad clinical acceptance underpins its ongoing relevance, especially in resistant hypertension cases.

Global and Regional Market Size

The global antihypertensive drugs market is projected to reach approximately USD 37 billion by 2027, with diuretic agents accounting for a substantial segment due to their established efficacy and cost-effectiveness (Grand View Research, 2022). ALDOCLOR-150’s market share, while historically stable, faces competitive pressures from newer therapeutic classes, including ARBs, ACE inhibitors, and mineralocorticoid receptor antagonists.

In North America, the market for combination diuretics persists robustly, driven by aging populations and increased hypertension prevalence. Europe exhibits similar trends, with a shift towards combination therapies to improve adherence. Emerging markets demonstrate rapid growth contingent on healthcare infrastructure development and regulatory approvals.


Market Dynamics

Regulatory Developments and Patent Landscape

ALDOCLOR-150 has faced minimal patent challenges due to its age and generic availability. Patent expirations have precipitated increased generic competition, compressing profit margins. However, recent regulatory initiatives—such as streamlined approval pathways for biosimilars and generics—accelerate market entry for alternatives but raise concerns over commoditization.

Regulatory adjustments like the FDA’s Drug Label Modernization initiatives can influence formulation variations and combination dosing options. A recent FDA clearance streamlined approval processes for fixed-dose combinations similar to ALDOCLOR-150, potentially impacting its formulary positioning.

Pricing Trends and Reimbursement Policies

Price sensitivity remains acute for diuretic combinations; payers favor low-cost generics. The heightened emphasis on value-based care incentivizes formulary favoritism towards established, cost-effective medications like ALDOCLOR-150. Reimbursement policies favor maintaining treatment affordability, though administrative hurdles vary by region.

Competitive Landscape

ALDOCLOR-150’s principal competitors include generic combinations and newer antihypertensive drugs with similar efficacy profiles. Noteworthy rivals include formulations combining spironolactone with other diuretics or mineralocorticoid receptor antagonists such as eplerenone. The entry of biosimilar agents targeting active ingredients might pressure margins further.

Innovative therapies, such as SGLT2 inhibitors and ARNI agents, increasingly compete in the broader cardiovascular therapeutic space, indirectly affecting traditional diuretic usage.

Market Penetration and Adoption Trends

Physician preference shifts toward personalized medicine and newer agents may marginalize traditional fixed-dose combinations. However, prescribing inertia, formulary preferences, and patient adherence considerations sustain ALDOCLOR-150’s relevance. Digital health tools facilitate improved adherence, positively impacting market retention.


Financial Trajectory

Revenue Analysis

Prior to patent expiry-driven generic competition, ALDOCLOR-150 generated steady revenues, with estimates exceeding USD 300 million annually in key markets (IQVIA, 2021). Post-patent expiration, sales shifted predominantly to generic manufacturers, leading to significant price erosion (estimated decline of 20-30% annually).

The introduction of biosimilars or new fixed-dose combinations may challenge existing revenue streams. However, established brand loyalty and extensive clinician familiarity serve as barriers to immediate displacement.

Profitability and Cost Structure

Profit margins are influenced substantially by generic competition and manufacturing costs. Economies of scale from large production volumes mitigate some margin erosion. The cost of regulatory compliance and quality assurance remains a key expense category.

Forecasted Financial Trends

Assuming no major formulation innovations, revenues are expected to decline marginally over the next five years, stabilizing at lower levels due to sustained demand in specific patient subsets. Conversely, strategic repositioning—such as reformulation with extended-release features or combination with novel agents—could rejuvenate revenue streams.

Strategic Opportunities

  • Line Extensions: Developing alternative dosing forms or fixed-dose combinations targeting resistant hypertension can diversify revenue (e.g., ALDOCLOR-200).
  • Partnerships and Licensing: Collaborations with biosimilar firms or new entrant companies may optimize market reach.
  • Cost Optimization: Streamlining manufacturing and distribution enhances profitability amidst pricing pressures.

Regulatory and Market Risks

Potential regulatory changes—such as price controls, formulary restrictions, or reimbursement cuts—pose risks to profitability. Market risks include rapid technological obsolescence and shifting clinician preferences favoring newer therapies. Supply chain disruptions or raw material shortages can impair production continuity.


Concluding Perspective

ALDOCLOR-150’s market dynamics reflect a mature therapeutic class confronting a landscape shaped by patent expirations, competitive generics, and emerging treatment modalities. Despite declining revenues, its entrenched clinical utility and formulary presence afford strategic resilience. Partnerships, innovation, and operational efficiencies will determine its financial trajectory amid ongoing healthcare reforms and evolving standards of care.


Key Takeaways

  • Market Position: ALDOCLOR-150 retains a vital niche, supported by longstanding clinical efficacy and formulary stability, but faces sustained pricing pressures from generic competition.
  • Revenue Outlook: Anticipate gradual revenue decline over the next five years unless strategic opportunities—such as new formulations or combination therapies—are pursued.
  • Strategic Focus: Investment in reformulation, biosimilar collaborations, and targeted marketing can augment market share and profitability.
  • Regulatory Landscape: Navigating evolving policies on generic approvals and pricing is critical to maintaining financial health.
  • Market Risks: Clinician preference shifts and regulatory constraints necessitate proactive adaptation to sustain relevance.

Frequently Asked Questions

Q1: What factors have most significantly impacted ALDOCLOR-150's market share recently?
A1: Patent expirations led to increased generic competition, exerting downward pressure on prices and market share. Additionally, the advent of newer antihypertensive classes has shifted clinician prescribing habits.

Q2: Are there opportunities for reformulating ALDOCLOR-150 to extend its market life?
A2: Yes. Developing extended-release formulations or combination therapies integrating newer agents can enhance adherence and address resistant hypertension, providing new revenue streams.

Q3: How do regulatory policies influence the future of ALDOCLOR-150?
A3: Policies favoring rapid approval of generics and biosimilars can accelerate market saturation, while reimbursement reforms emphasizing cost-effectiveness can sustain demand for established, low-cost options.

Q4: What competitive threats does ALDOCLOR-150 face from emerging therapies?
A4: Newer agents with improved efficacy and tolerability, such as mineralocorticoid receptor antagonists or SGLT2 inhibitors, may supplant traditional diuretics in some indications, reducing its overall utilization.

Q5: What strategic actions can companies undertake to maximize ALDOCLOR-150’s financial trajectory?
A5: Focus on formulation innovation, licensing, strategic partnerships, and targeted marketing can help sustain revenues and margins despite competitive pressures.


References

  1. Grand View Research. (2022). Hypertension Drugs Market Size, Share & Trends Analysis Report.
  2. IQVIA. (2021). Global Pharmaceutical Market Report.
  3. U.S. Food and Drug Administration. (2022). Regulatory Policy Updates.

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