Last Updated: August 9, 2026

HYTRIN Drug Patent Profile


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When do Hytrin patents expire, and what generic alternatives are available?

Hytrin is a drug marketed by Abbott and is included in two NDAs.

The generic ingredient in HYTRIN is terazosin hydrochloride. There are twenty-four drug master file entries for this compound. Twenty suppliers are listed for this compound. Additional details are available on the terazosin hydrochloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Hytrin

A generic version of HYTRIN was approved as terazosin hydrochloride by SENORES PHARMS on March 30th, 1998.

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Summary for HYTRIN
Recent Clinical Trials for HYTRIN

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

SponsorPhase
University of IowaPhase 1
Michael J. Fox Foundation for Parkinson's ResearchPhase 1
University of Iowa Institute of Clinical and Translational SciencesPhase 1/Phase 2

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US Patents and Regulatory Information for HYTRIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Abbott HYTRIN terazosin hydrochloride CAPSULE;ORAL 020347-001 Dec 14, 1994 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Abbott HYTRIN terazosin hydrochloride TABLET;ORAL 019057-003 Aug 7, 1987 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Abbott HYTRIN terazosin hydrochloride CAPSULE;ORAL 020347-004 Dec 14, 1994 DISCN Yes 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

Expired US Patents for HYTRIN

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Abbott HYTRIN terazosin hydrochloride CAPSULE;ORAL 020347-003 Dec 14, 1994 ⤷  Start Trial ⤷  Start Trial
Abbott HYTRIN terazosin hydrochloride CAPSULE;ORAL 020347-003 Dec 14, 1994 ⤷  Start Trial ⤷  Start Trial
Abbott HYTRIN terazosin hydrochloride TABLET;ORAL 019057-003 Aug 7, 1987 ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

HYTRIN (terazosin) market dynamics and financial trajectory: exclusivity, competitive pressure, and revenue outlook

Last updated: July 29, 2026

HYTRIN is a brand of terazosin, an oral alpha-1 adrenergic blocker used primarily for benign prostatic hyperplasia (BPH) and secondarily for hypertension. The brand’s commercial trajectory is shaped by long-expired primary patent terms, entrenched generic competition, and ongoing low-cost substitution. HYTRIN’s market position is therefore structurally weak versus lower-priced generic terazosin products, with revenue largely dependent on residual brand retention, payer contracting, and channel mix rather than new clinical differentiation.

What is HYTRIN (terazosin) used for, and how do those indications shape demand?

Featured snippet: HYTRIN is terazosin for BPH symptom management and is also used for hypertension; demand tracks prevalence of treated BPH and physician prescribing preferences, then declines as generic terazosin substitutes.

HYTRIN indication mix and prescribing drivers

  • BPH (benign prostatic hyperplasia): Sustained chronic use in a subset of patients, but increasingly substituted with other low-cost alpha blockers (e.g., tamsulosin, doxazosin) and with combination regimens depending on symptom profile and tolerability.
  • Hypertension: Market share depends on how often alpha blockers remain in hypertension treatment lines relative to first-line agents (ACE inhibitors, ARBs, thiazides, calcium channel blockers). Alpha blockers typically remain a later-line option in many formularies.

Why alpha-1 blockers behave like “commodity brands”

  • Class members are substitutable at the payer level.
  • Clinical endpoints overlap for symptom relief.
  • Patent-driven differentiation is limited in an aging, generic-dominated segment.
  • Net price compression is rapid after generic availability.

How big is HYTRIN’s addressable market, and what does competitor structure mean for pricing?

Featured snippet: The BPH alpha-1 blocker market is large but fragmented across multiple generic products; pricing is set by lowest-cost contracting and therapeutic interchangeability, not by brand premiums.

Competitive landscape: brand vs. generic and class competition

  • Direct chemical entity competition: Generic terazosin tablets compete with HYTRIN.
  • Class competition: Other alpha-1 blockers compete indirectly:
    • tamsulosin (commonly preferred for select patients due to dosing/tolerability patterns)
    • doxazosin
    • alfuzosin
  • Class competition affects utilization even when terazosin remains available as a generic.

Payer dynamics that compress brand pricing

  • Formularies frequently list multiple alpha blockers with tiered copays that drive substitution.
  • PBM rebates and contracting reduce the usable “spread” for brands.
  • Pharmacy channel behavior favors the product with the best contracted economics.

Market structure implication for financial trajectory

  • With generic penetration, HYTRIN’s revenue tends to decline toward a floor tied to:
    • brand persistence in certain accounts,
    • narrow differences in pill strength coverage or historical formulary position,
    • patient-specific tolerability history.
  • Net revenue growth becomes unlikely; the more realistic pattern is a continued drift downward unless the brand is re-channeled into niche segments.

When did HYTRIN lose exclusivity, and how does that timing typically impact revenue decay?

Featured snippet: HYTRIN is a mature, long-genericized product; loss of exclusivity means revenue primarily follows generic substitution cycles rather than patent cliffs.

Patent and exclusivity impact on commercial slope

For older small-molecule brands like HYTRIN, revenue decay usually follows a sequence:

  1. Generic entry (first ANDA launches)
  2. Payer switching to lower net cost
  3. Channel liquidation or re-contracting
  4. Further erosion as additional generic manufacturers enter

Expected trajectory post-exclusivity

  • A steep decline during initial generic launches is typical.
  • Subsequent years often show slower linear declines as:
    • formularies stabilize,
    • “last remaining brand” accounts persist temporarily,
    • pharmacists substitute at the margin.

What is the Orange Book status of HYTRIN, and how does that translate into generic entry risk?

Featured snippet: HYTRIN’s Orange Book-protected period is functionally over; generic competition is already entrenched, so marginal risk is now mainly about continued manufacturing entry and price settlement, not first-to-market exclusivity.

Orange Book mechanics that matter now

Even without a live Orange Book pull embedded here, the commercial logic is:

  • Once listing protections expire, ANDAs can launch without paragraph IV leverage.
  • For a long-standing product, the market usually reaches a multi-manufacturer equilibrium quickly.
  • Remaining brand revenue becomes a function of contract retention, not legal barriers.

How do HYTRIN’s dosage forms and strengths affect competitive substitution?

Featured snippet: HYTRIN’s tablet strengths and dosing schedules influence how easily prescribers and pharmacies switch between generic versions and alternative alpha blockers.

Practical substitution barriers

  • Tablets: dosing flexibility can reduce friction, since generics match standard strengths closely.
  • Retitration practices in BPH can lead to continuity of a patient’s existing product when tolerability is stable.
  • If certain strengths are unevenly supplied, temporary switching can occur, but that tends to benefit whichever generic is in stock and contracted.

Financial impact of formulation parity

  • When generics are bioequivalent and formulation differences are minimal, brand pricing power disappears.
  • Revenue becomes highly sensitive to:
    • wholesaler inventory patterns,
    • PBM formulary list position,
    • brand-specific supply reliability.

What generic and biosimilar threats exist for HYTRIN?

Featured snippet: HYTRIN faces generic threats (ANDA-driven) and not biosimilar threats, because terazosin is a small molecule.

Generic threat profile

  • ANDA-driven competition: ongoing, incremental erosion as more manufacturers compete.
  • First-to-market ANDA dynamics: early launchers may secure longer share before others undercut.

What is not relevant

  • Biosimilar competition is not applicable to terazosin.
  • “Patent thickets” can affect launch timing for older products, but in practice HYTRIN’s launch has already been competed away.

What patent litigation mattered for HYTRIN, and what does “litigation-free” imply for current market dynamics?

Featured snippet: For legacy small molecules like HYTRIN, the key litigation period typically preceded generic entry; today the market dynamic is dominated by settled generic supply and pricing.

How litigation history translates into current financials

  • If major patent battles ended years ago, the current environment is post-settlement and post-injunction.
  • The remaining drivers become commercial:
    • contracting, inventory, and supply,
    • class substitution and shifts to other alpha blockers.

Practical implication

If HYTRIN is not tied to active, blocking litigation now, the revenue trajectory is dominated by:

  • generic unit share,
  • net price deterioration,
  • formulary displacement by other alpha blockers.

How does HYTRIN compare with other alpha blockers on market and prescribing momentum?

Featured snippet: Compared with tamsulosin-heavy pathways, terazosin products tend to face stronger substitution pressure for routine BPH symptom management, limiting brand durability.

Comparative positioning: why tamsulosin often wins share in practice

  • Tamsulosin is frequently preferred for BPH symptom relief in typical prescribing patterns.
  • Differential tolerability and dosing convenience can influence real-world persistence.
  • Even where terazosin generics are cheap, prescribers may prefer class members with better perceived patient experience.

Financial consequence for HYTRIN

  • HYTRIN must retain share against:
    • generic terazosin, and
    • non-terazosin alpha blockers.
  • That double pressure accelerates revenue erosion compared with a product that is isolated within one molecule’s competitive set.

What are the key financial trajectory drivers for HYTRIN?

Featured snippet: HYTRIN’s financial trajectory is driven by net price compression, generic share capture, payer contracting, and class-level switching for BPH.

Revenue drivers

  • Net price: declines with PBM and payer contracting.
  • Volume: declines as prescribers switch to other alpha blockers and as generic terazosin captures remaining share.
  • Channel mix: can swing quarterly based on wholesaler orders and inventory true-ups.
  • Formulary position: determines whether patients experience automatic substitution at the pharmacy counter.

Cost and margin structure implications

  • Brands in generic competition typically have:
    • higher relative selling costs,
    • margin pressure from discounting,
    • reduced ability to invest in demand capture.

Forward-looking business impact

  • Without fresh exclusivity or meaningful differentiation, HYTRIN’s revenue is typically in a mature decline phase.
  • The most plausible upside cases are narrow:
    • brand retention in specific accounts,
    • supply-driven temporary share gains,
    • payer contracts that delay generic switching.

What launch/settlement scenarios could still affect HYTRIN’s future revenues?

Featured snippet: With exclusivity expired, incremental revenue volatility comes mostly from generic supply changes and contracting shifts, not new legal outcomes.

Scenarios that can move revenue up or down

  • Generic market re-pricing due to entry or exit of manufacturers.
  • Supply constraints (temporary shortages) can cause brand spikes or generic share shifts.
  • PBM formulary list changes for alpha-1 blockers.
  • Class competition shifts due to guideline updates or formulary revisions.

What’s unlikely

  • Material new premium pricing versus generic terazosin.
  • Meaningful growth from clinical breakthroughs unless a new branded product or reformulation is introduced.

How should investors and commercial teams model HYTRIN’s remaining revenue exposure?

Featured snippet: Model HYTRIN as a declining mature brand with limited upside; sensitivity should focus on net price and prescription share loss.

Modeling framework

  • Use a base case of:
    • low/no volume growth,
    • continued net price compression,
    • gradual share loss to generics and alternative alpha blockers.
  • Stress cases:
    • accelerated share loss if a stronger contracted competitor enters or becomes preferred,
    • slower decline if HYTRIN maintains niche formulary or supply preference.

Key KPIs to track

  • Prescription share by strength and NDC.
  • Net price (WAC to net realization) trends by major channels.
  • PBM tier placement and formulary removals/additions.
  • Total class prescriptions for BPH alpha blockers.

Key takeaways

  • HYTRIN (terazosin) is in a generic-dominated alpha-1 blocker category where net price compression and formulary substitution drive financial outcomes more than differentiation.
  • The exclusivity-driven phase is already over; current market dynamics are primarily contracting, generic supply, and class-level switching (not patent barriers).
  • Revenue trajectory is structurally biased toward continued decline, with any volatility linked to payer contracting, channel inventory, and competitive preference shifts among alpha blockers.
  • Commercial modeling should weight net price and prescription share decline as the main sensitivities, with limited probability of sustained upside.

FAQs

1) Is HYTRIN still prescribed for BPH, or did generic terazosin replace it?

HYTRIN is largely exposed to generic substitution within terazosin and to class-level switching to other alpha blockers, so its prescribing presence depends on local formulary and payer contracting rather than exclusivity.

2) What happens to HYTRIN revenue if formulary preferences shift from terazosin to tamsulosin?

Revenue typically declines as share moves to the preferred alpha blocker; net price pressure compounds the impact because contracted pricing for the displaced product drops.

3) Are there biosimilar risks for HYTRIN?

No. Terazosin is a small molecule and does not have biosimilar pathways.

4) What could cause a short-term uptick in HYTRIN sales despite generic competition?

Supply interruptions, temporary wholesaler buying cycles, or short-term formulary reinstatement in certain accounts can produce short-term spikes, usually followed by return to trend.

5) Does patent litigation still matter for HYTRIN’s competitive position?

For a legacy product, litigation effects are mostly historical; current competitive position is driven by established generic presence and contracting rather than active blocking litigation.

References (APA)

  1. FDA. Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cder/daf/ (accessed 2026-07-29).

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