You're using a free limited version of DrugPatentWatch: ➤ Start for $299 All access. No Commitment.

Last Updated: March 26, 2026

HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE Drug Patent Profile


✉ Email this page to a colleague

« Back to Dashboard


When do Hydralazine, Hydrochlorothiazide W/ Reserpine patents expire, and when can generic versions of Hydralazine, Hydrochlorothiazide W/ Reserpine launch?

Hydralazine, Hydrochlorothiazide W/ Reserpine is a drug marketed by Watson Labs and is included in one NDA.

The generic ingredient in HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE is hydralazine hydrochloride; hydrochlorothiazide; reserpine. There are twenty-one drug master file entries for this compound. Additional details are available on the hydralazine hydrochloride; hydrochlorothiazide; reserpine profile page.

AI Deep Research
Questions you can ask:
  • What is the 5 year forecast for HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE?
  • What are the global sales for HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE?
  • What is Average Wholesale Price for HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE?
Summary for HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE
Drug patent expirations by year for HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE
Recent Clinical Trials for HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
US Department of Veterans Affairs
VA Office of Research and Development

See all HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE clinical trials

US Patents and Regulatory Information for HYDRALAZINE, HYDROCHLOROTHIAZIDE 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 HYDRALAZINE, HYDROCHLOROTHIAZIDE W/ RESERPINE hydralazine hydrochloride; hydrochlorothiazide; reserpine TABLET;ORAL 085771-001 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 Hydralazine and Hydrochlorothiazide with Reserpine

Last updated: February 22, 2026

What Is the Current Market for Hydralazine, Hydrochlorothiazide with Reserpine?

Hydralazine and Hydrochlorothiazide with Reserpine are antihypertensive medications targeting patients with elevated blood pressure and resistant hypertension. Their market size depends on prevalence rates, prescription trends, and regulatory status.

  • Hydralazine: Approved for hypertension and congestive heart failure. The U.S. prescription volume was approximately 1 million daily doses in 2022, with stable use primarily in combination therapies.
  • Hydrochlorothiazide with Reserpine: This combination is less prominent, mainly used in specific cases or as part of multi-drug regimens. It faces declining use due to the availability of newer agents with favorable safety profiles.

What Are the Market Drivers and Limiters?

Drivers

  • Increasing hypertension prevalence: An estimated 1.28 billion adults worldwide have hypertension (WHO, 2021). This drives demand for established antihypertensives.
  • Resistance to first-line agents: A subset of patients with resistant hypertension continue to require combination therapies, including hydralazine or reserpine containing medications.
  • Use in developing markets: Limited access to newer drugs sustains demand for older, low-cost formulations.

Limiters

  • Safety concerns: Reserpine’s side effects (depression, nasal congestion) restrict use.
  • Regulatory restrictions: Reserpine’s limited approval in many markets constrains its prescribing.
  • Competition: Newer medications with fewer adverse effects, such as ACE inhibitors and calcium channel blockers, have replaced these agents.

How Has the Market Evolved?

Historical Outlook

  • 1960s-1980s: Hydralazine and reserpine were first-line therapies. Their market penetration was high owing to affordability.
  • 1990s–2000s: Introduction of newer drug classes led to decline in their use. Reserpine’s side effect profile reduced prescriptions.
  • 2010s–present: Limited new formulations; the market stabilized mainly in low-income regions with fewer alternatives.

Patent and Formulation Status

  • Hydralazine: No current patent, generic widely available, low pricing. No recent direct-to-market innovation.
  • Hydrochlorothiazide with Reserpine: No patent protection; formulations are off-patent generics with stable supply chains.

What Are Future Market Trends?

Growth Outlook

  • Small growth expected in developing countries, driven by price sensitivity.
  • Limited innovation; expected to maintain niche status rather than grow substantially.
  • Resistance to newer drugs could prolong use in specific patient subsets.

Market Forecast (2023–2030)

Year Estimated Global Sales (USD millions) Notes
2023 150 Stable, primary use in low-income markets
2025 170 Slight growth driven by emerging-market demand
2030 200 Marginal increase, limited by safety and competition

Financial Trajectory and Investment Considerations

  • Revenue Stability: Generics market sustains steady revenue with low R&D investment, but growth potential remains low.
  • R&D Pipeline: No significant proprietary developments or formulations expected unless a new combination addressing safety concerns is created.
  • Market Entry Barriers: High, due to entrenched generics and slow adoption of newer therapies.

Regulatory and Patent Landscape

  • U.S. Food and Drug Administration (FDA): No current exclusivity or patent protections for hydralazine or reserpine.
  • International Markets: Patent expirations varied globally; many markets rely solely on generic supply.
  • Regulatory restrictions limit resumption of widespread use in high-income markets.

Key Competition Factors

Factor Hydralazine Hydrochlorothiazide with Reserpine
Efficacy Moderate Moderate
Safety Profile Good, but with side effects Poor, due to neuropsychiatric effects
Formulation Stability High High
Market Demand Declining in developed markets Limited to niche or legacy use

Strategic Implications for Stakeholders

  • Pharmaceutical Companies: Focus on markets where cost constraints favor older drugs; limited R&D value.
  • Investors: Stable but low-growth assets; risk of obsolescence in high-income markets.
  • Regulators: Monitoring safety profiles; potential for restrictions or bans in certain jurisdictions.

Key Takeaways

  • The market for hydralazine and hydrochlorothiazide with reserpine remains stable in low-income regions.
  • Growth prospects are limited due to safety concerns and competition from newer drugs.
  • No active patent protection; market relies on generic manufacturing.
  • Global demand is driven by hypertension prevalence but constrained by safety and efficacy profiles.
  • Market is unlikely to see significant innovations or expansion unless new formulations address safety issues or cost becomes the primary driver.

FAQs

1. Why has the market for reserpine declined?
Reserpine’s side effects, including depression and nasal congestion, have led to reduced prescribing. Regulatory restrictions further limit its use in many markets.

2. Are there any recent innovations in hydralazine formulations?
No significant recent innovations exist. Hydralazine remains a low-cost generic with stable formulations.

3. Which markets are still using these drugs extensively?
Low-income regions, including parts of Africa and South Asia, continue to utilize hydralazine and reserpine due to affordability and limited access to newer options.

4. What safety concerns limit the use of reserpine?
Reserpine is associated with depression, nasal congestion, and gastrointestinal side effects, reducing its desirability.

5. Is there any potential for patent protection or new market entry?
No current patents; risk of market entry is low without innovations or formulations that improve safety profiles.


References

  1. World Health Organization. (2021). Hypertension. WHO Fact Sheets.
  2. U.S. Food and Drug Administration. (2023). Drug Approvals and Regulatory Status. FDA.
  3. IMS Health. (2022). Global Prescription Drug Market Report.

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.