TheraRadar
Data updated: May 26, 2026

HIPREX (methenamine hippurate)

Trial Activity: Mature 1 active trials
Infectious Disease Approved 1976-09-09

HIPREX is indicated for the treatment of Urinary Tract Infection.

Source: FDA Label • ESJAY PHARMA

Development Insights

University of Texas Southwestern Medical Center conducting 1 trials (33%)
4 indications explored (Focused)
urinary tract infections (1 trials)
overactive bladder (oab) (1 trials)
urinary tract infection (diagnosis) (1 trials)
1
Indication
--
Phase 3 Trials
49
Years on Market

Details

Status
Prescription
First Approved
1976-09-09
Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: METHENAMINE HIPPURATE

HIPREX Approval History

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Original
New Indication
New Form
Label Update
17 FDA actions from 1976 to 2021
Dec 2021 SUPPL
Mfg · Manufacturing (CMC)
Dec 2017 SUPPL
Label · Labeling
Aug 2016 SUPPL
Mfg · Manufacturing (CMC)

What HIPREX Treats

1 indications

HIPREX is approved for 1 conditions since its original approval in 1976. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Urinary Tract Infection
Source: FDA Label

HIPREX Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to HIPREX

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Shared indications:
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AMPICILLIN SODIUM
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WATSON LABS INC
Shared indications:
ANCOBON
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1 shared
BAUSCH
Shared indications:
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Clinical Trial Registry

3 trials
Trial Sponsor ID Phase Status Title
NCT04709601 results posted STU-2020-0725 Ph 4 terminated Efficacy and Mechanism of Action of Methenamine Hippurate (Hiprex™) in Women With Recurring Urinary Tract Infections.
NCT06953271 META 2265134 Ph 4 not yet recruiting Methenamine Hippurate Following Intradetrusor OnabotulinumtoxinA Injection
NCT03077711 results posted EH16-216 Ph 4 completed Methenamine Hippurate Versus Trimethoprim in the Prevention of Recurrent UTIs
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

HIPREX FDA Label Details

Indications & Usage

FDA Label (PDF)

HIPREX is indicated for the treatment of Urinary Tract Infection.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.

How We Calculate These Metrics

Trial Activity Stage

Measures the current development activity pattern based on trial phases, status, and trends. Important: This measures R&D activity, not commercial lifecycle.

Trial statuses: "Active" means recruiting or ongoing. "Completed" means reached planned endpoint. "Terminated" means stopped early—often due to safety, efficacy, or business reasons.

  • Growth: High proportion of early-phase trials (Phase 1/2), active development
  • Expansion: Significant Phase 3 activity, approaching or pursuing approvals
  • Mature: Substantial Phase 4 post-marketing studies
  • Stable: Mixed phase distribution, steady development
  • Declining: Low active trial ratio, reduced R&D investment