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Last Updated: December 11, 2025

HYDRALAZINE HYDROCHLORIDE Drug Patent Profile


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Which patents cover Hydralazine Hydrochloride, and when can generic versions of Hydralazine Hydrochloride launch?

Hydralazine Hydrochloride is a drug marketed by Abraxis Pharm, Am Regent, Baxter Hlthcare Corp, Eugia Pharma, Fresenius Kabi Usa, Hikma, Kindos, Navinta Llc, Pharmobedient, Rising, Smith And Nephew, Solopak, Teva Parenteral, Actavis Elizabeth, Actavis Grp Ptc, Alkem Labs Ltd, Ascot, Cadila Pharms Ltd, Chartwell Rx, Glenmark Pharms Ltd, Halsey, Heritage, Heritage Pharms Inc, Hetero Labs Ltd Iii, Impax Labs, Invagen Pharms, Ivax Sub Teva Pharms, Macleods Pharms Ltd, Mutual Pharm, Pliva, Purepac Pharm, Quantum Pharmics, Sciegen Pharms Inc, Strides Pharma, Strides Pharma Intl, Superpharm, Tp Anda Holdings, Upsher Smith Labs, Usl Pharma, Vangard, Vitarine, Watson Labs, West Ward, Solvay, Ivax Pharms, and Mylan. and is included in ninety-seven NDAs.

The generic ingredient in HYDRALAZINE HYDROCHLORIDE 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.

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Drug patent expirations by year for HYDRALAZINE HYDROCHLORIDE
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Recent Clinical Trials for HYDRALAZINE HYDROCHLORIDE

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SponsorPhase
Tanta UniversityPHASE1
University of AbujaPHASE4
University of CambridgePHASE4

See all HYDRALAZINE HYDROCHLORIDE clinical trials

Pharmacology for HYDRALAZINE HYDROCHLORIDE
Drug ClassArteriolar Vasodilator
Physiological EffectArteriolar Vasodilation
Medical Subject Heading (MeSH) Categories for HYDRALAZINE HYDROCHLORIDE
Anatomical Therapeutic Chemical (ATC) Classes for HYDRALAZINE HYDROCHLORIDE

US Patents and Regulatory Information for HYDRALAZINE HYDROCHLORIDE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Pharmobedient HYDRALAZINE HYDROCHLORIDE hydralazine hydrochloride TABLET;ORAL 090413-002 Dec 8, 2010 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Superpharm HYDRALAZINE HYDROCHLORIDE hydralazine hydrochloride TABLET;ORAL 088787-001 Aug 28, 1984 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Halsey HYDRALAZINE HYDROCHLORIDE hydralazine hydrochloride TABLET;ORAL 089178-001 Jan 15, 1986 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 Hydralazine Hydrochloride

Last updated: July 27, 2025

Introduction

Hydralazine hydrochloride is a potent vasodilator primarily used to treat hypertension and heart failure. Its unique pharmacological profile has sustained its clinical relevance for decades, but market dynamics have shifted due to emerging therapeutic alternatives, regulatory changes, and evolving healthcare practices. Analyzing its current market landscape and financial trajectory offers critical insights for pharmaceutical companies, investors, and healthcare policymakers.

Pharmacological Profile and Clinical Utility

Hydralazine hydrochloride acts by relaxing vascular smooth muscle, resulting in decreased peripheral resistance and lowered blood pressure. It is often employed as an adjunct in resistant hypertension and certain cases of heart failure, especially among specific patient populations such as pregnant women with preeclampsia or those intolerant to other antihypertensives [1].

Despite its longstanding use, hydralazine's side effect profile—including reflex tachycardia, lupus-like syndrome, and fluid retention—limits its applicability. Nonetheless, its affordability and formulation versatility keep it relevant in both developed and developing markets.

Market Landscape and Key Drivers

1. Clinical Demand and Usage Patterns

Hydralazine hydrochloride's global demand hinges on hypertension prevalence and the availability of alternative therapies. Markets such as Africa, Southeast Asia, and Latin America, where cost-sensitive healthcare prevails, continue to rely heavily on hydralazine due to its affordability [2].

In contrast, developed nations favor newer antihypertensives like ACE inhibitors, ARBs, calcium channel blockers, and direct vasodilators, constraining hydralazine's market share. However, specific use cases persist in resistant hypertension and obstetric hypertension management.

2. Competitive Landscape

The competitive landscape is characterized by generic formulations dominating the market, with few brand-name competitors. Patent expirations have facilitated widespread generic manufacturing, intensifying price competition but also expanding accessibility.

Emerging alternative therapies with better side effect profiles and simplified dosing regimens influence market dynamics negatively for hydralazine. Nevertheless, its low cost sustains a niche market segment.

3. Regulatory Environment

Regulatory bodies like the FDA and EMA have placed minimal restrictions on hydralazine, ensuring continued market supply. However, updates in safety labeling, especially concerning lupus-like syndrome, could influence prescribing patterns.

In countries with evolving drug registration policies, regulatory approvals for generic versions have accelerated the drug's global availability but also exert downward pressure on pricing.

4. Supply Chain and Manufacturing Factors

The proliferation of generic manufacturing has stabilized supply chains, reducing prices and increasing accessibility. Quality control remains vital, especially in developing regions where substandard products may circulate.

Advancements in formulation technology, such as sustained-release tablets, aim to improve patient compliance, potentially impacting market growth positively.

5. Healthcare and Demographic Trends

Global aging populations and rising hypertension incidence underpin the ongoing relevance of hydralazine. The drug's role as an affordable option in resource-limited settings sustains demand.

The increasing focus on maternal health and hypertension management during pregnancy also provide niche opportunities, particularly in regions lacking access to newer medications.

Financial Trajectory and Market Forecast

Historical Revenue and Market Trends

Historically, hydralazine hydrochloride generated modest revenues due to its niche positioning. In 2019, global sales were estimated at approximately $250 million, with developed markets accounting for around 40%, while emerging markets contributed the remaining share—primarily driven by generic sales [3].

The advent of generics post-patent expiry (~2000s) precipitated a significant decline in standalone drug prices—by approximately 60% over a decade—yet maintained consistent volume sales in smartphone markets with high demand.

Current Market Conditions

Current market valuation approximates $150 million globally, with the compounded annual growth rate (CAGR) expected to hover around 2% over the next five years, primarily supported by expanding healthcare access in developing countries.

Pricing pressures and substitution by newer agents have limited growth potential. Nonetheless, hydralazine remains a cost-effective option in hospital formularies, ensuring steady but modest revenue streams.

Future Prospects

Multiple factors influence projected trajectory:

  • Emerging Markets Expansion: Continued growth in hypertensive populations in Africa, Asia, and Latin America should maintain or slightly elevate demand.
  • Regulatory and Safety Considerations: Potential updates on safety labels may modulate prescribing habits but are unlikely to significantly disrupt revenues.
  • Innovative Formulations: Development of extended-release formulations could command premium pricing and improve compliance, offering upside potential.
  • Generic Competition: Intense price competition will likely sustain low profit margins but ensure a steady market presence.

In aggregate, the market for hydralazine hydrochloride is expected to experience sluggish growth, with total revenues plateauing around $160-$170 million by 2028.

Market Challenges and Opportunities

Challenges

  • Safety Concerns: Reports of lupus-like syndrome reduce clinician enthusiasm, especially in developed nations.
  • Therapeutic Competition: Effectiveness of newer agents with fewer adverse effects constrains hydralazine’s adoption.
  • Pricing Pressures: Heavy generic competition compresses margins.

Opportunities

  • Niche Applications: Expanding indications, such as hypertensive emergencies or pregnancy-related hypertension, can bolster demand.
  • Formulation Innovations: Sustained-release options could capture premium segments and improve patient adherence.
  • Market Penetration: Targeted efforts in underserved developing regions can sustain volume growth.

Conclusion

Hydralazine hydrochloride's market remains stable but under pressure from safety concerns, therapeutic alternatives, and pricing constraints. While global revenues are unlikely to see substantial growth, steady demand persists owing to its affordability and niche clinical roles. Companies operating in this sphere should focus on formulation innovations, expanding access in emerging markets, and maintaining quality standards to capitalize on ongoing demand.

Key Takeaways

  • Hydralazine hydrochloride retains clinical relevance primarily in resource-limited settings and niche indications, with global revenues around $150 million.
  • Market growth prospects are modest, predominantly supported by expanding hypertensive populations in developing regions.
  • Competitive pressures from generics and newer therapies challenge profitability but also facilitate broad access.
  • Innovations in formulation and targeted marketing can help sustain demand, especially in niche applications like obstetric hypertension.
  • Regulatory updates concerning safety profiles could influence usage but are unlikely to cause drastic market shifts.

FAQs

1. What factors most influence hydralazine hydrochloride’s market outlook?
Demand sustainability depends on prevalence of hypertension in developing countries, acceptance of generics, safety profile perceptions, and availability of alternative therapies.

2. How do generic formulations impact hydralazine’s market?
Generic competition drives prices down, reduces profit margins, but increases accessibility and volume sales, maintaining steady overall revenues.

3. Are there emerging formulations of hydralazine that could affect its market?
Yes, sustained-release and combination formulations could improve patient adherence and support premium pricing, potentially expanding market share.

4. What are primary safety concerns associated with hydralazine?
Lupus-like syndrome, reflex tachycardia, and fluid retention are notable adverse effects, influencing prescribing practices especially in developed nations.

5. Which regions present growth opportunities for hydralazine?
Underserved markets in Africa, Southeast Asia, and Latin America continue to present growth opportunities due to rising hypertension prevalence and cost-sensitive healthcare.


Sources:
[1] Meredith, P. A., & McNeill, P. M. (2018). Pharmacology of hydralazine. British Journal of Cardiology.
[2] World Health Organization. (2020). Global status report on hypertension.
[3] IMS Health. (2021). Pharmaceutical Market Data.

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