TheraRadar
Data updated: Jun 28, 2026

LITHOSTAT (acetohydroxamic acid) · MISSION PHARMA

Urease Inhibitors
Urology Approved 1983-05-31

Acetohydroxamic acid is indicated as adjunctive therapy in patients with chronic urea-splitting urinary infection. AHA is intended to decrease urinary ammonia and alkalinity, but it should not be used in lieu of curative surgical treatment (for patients with stones) or antimicrobial treatment. Long-term treatment with AHA may be warranted to maintain urease inhibition as long as urea-splitting infection is present. Experience with AHA does not go beyond 7 years.

Source: FDA Label
1
Indication
--
Phase 3 Trials
1
Priority Reviews
43
Years on Market

Details

Status
Prescription
First Approved
1983-05-31
Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: ACETOHYDROXAMIC ACID

LITHOSTAT Approval History

1984
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Original
New Indication
New Form
Label Update
8 FDA actions from 1983 to 2015
Jan 2015 SUPPL Priority
Mfg · Manufacturing (CMC)
May 2000 SUPPL Priority
Mfg · Manufacturing (CMC)
Aug 1988 SUPPL
Label · Labeling

What LITHOSTAT Treats

1 indications

LITHOSTAT is approved for 1 conditions since its original approval in 1983. These indications span multiple therapeutic areas including oncology, immunology, and more.

Source: FDA Label

LITHOSTAT 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.

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Clinical Trial Registry

1 trials
Trial Sponsor ID Phase Status Title
NCT07393438 AHA-PLUS AHA-PLUS-MDRTB-2026 2025ZD1802404 Ph 2 not yet recruiting Acetohydroxamic Acid Combined With a Short-Course Regimen for MDR-TB (AHA-PLUS)
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Active Pipeline

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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.

LITHOSTAT FDA Label Details

Indications & Usage

Acetohydroxamic acid is indicated as adjunctive therapy in patients with chronic urea-splitting urinary infection. AHA is intended to decrease urinary ammonia and alkalinity, but it should not be used in lieu of curative surgical treatment (for patients with stones) or antimicrobial treatment. Long-term treatment with AHA may be warranted to maintain urease inhibition as long as urea-splitting infection is present. Experience with AHA does not go beyond 7 years. A patient package insert should be distributed to each patient who receives AHA.

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Data Sources

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