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Last Updated: December 11, 2025

HYDROXYZINE HYDROCHLORIDE - Generic Drug Details


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What are the generic sources for hydroxyzine hydrochloride and what is the scope of patent protection?

Hydroxyzine hydrochloride is the generic ingredient in five branded drugs marketed by Baxter Hlthcare, Altana, Am Regent, Dr Reddys, Fresenius Kabi Usa, Hospira, Pharmafair, Smith And Nephew, Solopak, Watson Labs, Wyeth Ayerst, Organon Usa Inc, Pfizer, Roerig, Alpharma Us Pharms, Apozeal Pharms, Bionpharma, Chartwell Rx, Hikma, Kv Pharm, Lannett Co Inc, Pai Holdings Pharm, Rising, Able, Actavis Elizabeth, Amneal Pharm, Aurobindo Pharma Ltd, Epic Pharma Llc, Graviti Pharms, Halsey, Heritage Pharma, Hetero Labs Ltd Iii, Ivax Pharms, Kvk Tech, Mutual Pharm, Northstar Hlthcare, Nuvo Pharms Inc, Pliva, Prinston Inc, Purepac Pharm, Quantum Pharmics, Sandoz, Somerset Theraps Llc, Strides Pharma Intl, Sun Pharm Inds Inc, Sun Pharm Industries, Superpharm, and Usl Pharma, and is included in one hundred and five NDAs. Additional information is available in the individual branded drug profile pages.

There are seven drug master file entries for hydroxyzine hydrochloride. Forty-nine suppliers are listed for this compound.

Summary for HYDROXYZINE HYDROCHLORIDE
US Patents:0
Tradenames:5
Applicants:48
NDAs:105
Drug Master File Entries: 7
Finished Product Suppliers / Packagers: 49
Raw Ingredient (Bulk) Api Vendors: 1
Clinical Trials: 34
Patent Applications: 102
What excipients (inactive ingredients) are in HYDROXYZINE HYDROCHLORIDE?HYDROXYZINE HYDROCHLORIDE excipients list
DailyMed Link:HYDROXYZINE HYDROCHLORIDE at DailyMed
Recent Clinical Trials for HYDROXYZINE HYDROCHLORIDE

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

SponsorPhase
Friends Research Institute, Inc.PHASE4
MATClinicsPHASE4
Sultan Qaboos UniversityPhase 4

See all HYDROXYZINE HYDROCHLORIDE clinical trials

Pharmacology for HYDROXYZINE HYDROCHLORIDE
Drug ClassAntihistamine
Mechanism of ActionHistamine Receptor Antagonists
Anatomical Therapeutic Chemical (ATC) Classes for HYDROXYZINE HYDROCHLORIDE

US Patents and Regulatory Information for HYDROXYZINE HYDROCHLORIDE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Solopak HYDROXYZINE HYDROCHLORIDE hydroxyzine hydrochloride INJECTABLE;INJECTION 086822-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Quantum Pharmics HYDROXYZINE HYDROCHLORIDE hydroxyzine hydrochloride TABLET;ORAL 088551-001 Oct 22, 1985 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Watson Labs HYDROXYZINE HYDROCHLORIDE hydroxyzine hydrochloride TABLET;ORAL 081150-001 Mar 18, 1994 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Strides Pharma Intl HYDROXYZINE HYDROCHLORIDE hydroxyzine hydrochloride TABLET;ORAL 087603-001 Jan 22, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Watson Labs HYDROXYZINE HYDROCHLORIDE hydroxyzine hydrochloride TABLET;ORAL 081151-001 Mar 18, 1994 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
Kvk Tech HYDROXYZINE HYDROCHLORIDE hydroxyzine hydrochloride TABLET;ORAL 040786-001 Mar 20, 2007 AB RX 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 Hydroxyzine Hydrochloride

Last updated: July 27, 2025

Introduction

Hydroxyzine hydrochloride is a first-generation antihistamine widely used for its antihistaminic, anxiolytic, sedative, and anti-nausea properties. Its versatility in managing allergic reactions, anxiety, insomnia, and nausea ensures sustained demand across healthcare settings. This analysis explores the evolving market landscape, key drivers and inhibitors, regulatory influences, and financial trajectories dictating the future of hydroxyzine hydrochloride within the pharmaceutical industry.

Market Overview

Hydroxyzine hydrochloride holds a pivotal place in the antihistamine segment, particularly for acute allergic reactions and anxiety management. As a prescription medication, its sales are primarily driven by established medical practices and empirical clinical uses, with minimal over-the-counter (OTC) availability in many jurisdictions.

The global antihistamine market is projected to expand, driven by increasing allergy prevalence and a growing geriatric population prone to insomnia and anxiety disorders. Hydroxyzine's niche positioning benefits from its longstanding clinical track record, yet faces competition from newer, safer antihistamines with improved side effect profiles.

Market Drivers

Growing Prevalence of Allergic Conditions and Anxiety Disorders

Rising incidences of allergic rhinitis, atopic dermatitis, and other allergic conditions continue to sustain demand for antihistamines like hydroxyzine. Approximately 30-40% of the global population suffers from allergic conditions, according to WHO estimates. Moreover, increasing awareness and diagnosis of anxiety and insomnia — particularly among aging populations — bolster hydroxyzine prescriptions.

Established Clinical Efficacy and Safety Profile

Hydroxyzine’s long-standing use in clinical settings reinforces its market position. Its proven efficacy in managing various conditions ensures continued reliance by healthcare professionals, especially where newer drugs may lack extensive safety data or are more costly.

Regulatory Accelerants and Approvals

Hydroxyzine hydrochloride benefits from regulatory approvals in multiple markets, including FDA approval in the US and EMA approval in Europe. Regulatory stability fosters consistent sales channels and planning horizons for manufacturers.

Increased Use in Managing Pandemic-Related Anxiety and Insomnia

The COVID-19 pandemic has accentuated mental health concerns globally. Healthcare providers increasingly prescribe hydroxyzine for anxiety and sleep disturbances linked to pandemic-related stress. This surge offers short-term revenue boosts, especially in regions with limited access to newer pharmacotherapies.

Market Inhibitors

Safety Concerns and Side Effects

Hydroxyzine’s sedative and anticholinergic effects pose safety concerns, especially for elderly patients, increasing risks of falls and cognitive impairment. Such concerns lead clinicians to prefer alternative therapies with more favorable safety profiles in certain populations.

Competition from Safer and More Tolerable Drugs

Second-generation antihistamines (e.g., loratadine, cetirizine) now dominate the allergic rhinitis segment due to fewer sedative effects. These drugs have overtaken hydroxyzine in many therapeutic areas, shrinking the latter’s market share.

Regulatory and Reimbursement Challenges

Rising scrutiny over sedative agents and their adverse effects has led to restrictions and reduced reimbursement in some markets. This environment pressures manufacturers to reformulate or reposition hydroxyzine in clinical guidelines.

Patent and Market Entry Barriers

While hydroxyzine is largely off-patent, generic competition remains fierce, exerting downward pressure on preços and profit margins. Limited innovation in new formulations diminishes the potential for premium pricing.

Regulatory Landscape

Hydroxyzine hydrochloride retains regulatory approval primarily as a generic drug, reducing research and development costs for manufacturers. Nonetheless, regulatory agencies scrutinize safety, especially concerning elderly populations, influencing prescribing behaviors and market access.

Emerging regulations emphasizing less sedative alternatives influence the trajectory of hydroxyzine’s market approval, with some jurisdictions favoring non-sedating antihistamines as first-line therapies.

Financial Trajectory and Market Forecasting

Historical Financial Performance

Hydroxyzine hydrochloride’s revenues historically have remained steady within the antihistamine segment. As a mature product, most sales derive from existing patent protections expiring over past decades, resulting in reliance on generic sales volumes rather than innovation.

Forecasted Growth and Decline Trends

The global market for antihistamines was valued at approximately USD 6 billion in 2021, with hydroxyzine representing a smaller proportion, estimated at USD 300-500 million [1]. Due to increasing competition from second-generation antihistamines and safety concerns, hydroxyzine’s market share is projected to decline by 2-4% annually in the next five years.

However, specific niches such as hospital settings for anxiety and preoperative sedation may sustain specialty sales. The pandemic-induced increase in mental health-related prescriptions temporarily boosted revenues, but normalization is anticipated.

Impact of Genericization

Entry of multiple generic manufacturers has compressed profit margins, with prices declining by 40-60% over the last decade [2]. This trend is expected to persist unless pharmaceutical companies introduce reformulations or new indications to expand the market.

Potential for Formulation Innovations

Limited opportunities for formulation innovations exist, given the drug’s age and established patents expiration. Nonetheless, efforts to develop sustained-release formulations or combine hydroxyzine with other agents could create niche markets, potentially stabilizing financial returns.

Emerging Markets and Regional Dynamics

Growing healthcare infrastructure and increasing access to prescription medications in Asia-Pacific, Latin America, and Africa portend revenue opportunities. However, regulatory hurdles, pricing sensitivities, and local competition influence market penetration [3].

Strategic Considerations

  • Diversification of Indications: Developing new formulations targeting insomnia, anxiety, or nausea can diversify revenue streams.
  • Positioning in Specialty Markets: Focusing on hospital and sedation uses, where safer alternatives are limited.
  • Regulatory Engagement: Navigating regional approval processes to ensure market access and compliance.
  • Cost Optimization: Leveraging low-cost manufacturing for generics to preserve margins amid declining prices.
  • Research & Development: Investing in reformulations or combination therapies to extend product lifecycle.

Key Takeaways

  • Hydroxyzine hydrochloride remains relevant due to its established efficacy and broad prescription base, particularly in allergies and anxiety.
  • Market growth is constrained by safety concerns, competition from newer antihistamines, and patent expirations leading to commoditization.
  • Pandemic-related mental health symptoms temporarily boosted sales, but long-term growth prospects depend on niche targeting and formulation innovation.
  • Generics dominate the landscape, exerting downward pricing pressure and compressing profit margins.
  • Opportunities lie in regional market expansion, specialty utilization, and potential reformulation efforts, though regulatory and safety considerations are critical.

Conclusion

Hydroxyzine hydrochloride’s financial trajectory in the evolving pharmaceutical market reflects a mature, commoditized product facing demographic-driven demand, safety-driven competition, and regulatory scrutiny. Strategic focus on niche applications, cost efficiency, and regional expansion can help maintain its relevance amid industry shifts.


FAQs

1. What are the primary clinical uses of hydroxyzine hydrochloride?
Hydroxyzine hydrochloride is used to treat allergic reactions, anxiety, sleep disorders, nausea, and preoperative sedation, owing to its antihistaminic and anxiolytic properties.

2. How does hydroxyzine compare to newer antihistamines in terms of safety?
Hydroxyzine has sedative and anticholinergic effects that pose safety risks, especially in the elderly, whereas second-generation antihistamines like loratadine offer similar efficacy with fewer sedative side effects.

3. What factors could influence the future demand for hydroxyzine hydrochloride?
Demand could be affected by safety concerns, the emergence of safer alternatives, regulatory policies, and regional healthcare infrastructure developments.

4. Are there any ongoing research efforts to expand hydroxyzine’s therapeutic applications?
Limited reformulation research exists, mainly focused on improved delivery systems. No significant pipeline developments currently aim to expand indications.

5. How do patent expirations impact hydroxyzine hydrochloride’s market?
Patent expirations have led to increased generic competition, reducing prices and profit margins but allowing broader access and sustained volume sales.


Sources

[1] Market Research Future, 2022. Antihistamines Market Report.

[2] IQVIA, 2021. Generic Drug Market Trends.

[3] WHO, 2020. Global Access to Medicines Report.

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