TheraRadar

Pharma Intelligence, Simplified

Data updated: Mar 10, 2026

SODIUM PHENYLBUTYRATE

SODIUM PHENYLBUTYRATE
Approved 2011-11-18
6
Indications
--
Phase 3 Trials
14
Years on Market

Details

Status
Prescription
First Approved
2011-11-18
Routes
ORAL
Dosage Forms
TABLET, POWDER

SODIUM PHENYLBUTYRATE Approval History

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What SODIUM PHENYLBUTYRATE Treats

2 indications

SODIUM PHENYLBUTYRATE is approved for 2 conditions since its original approval in 2011. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Urea Cycle Disorder
  • Hyperammonemic Encephalopathy
Source: FDA Label
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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.

SODIUM PHENYLBUTYRATE FDA Label Details

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Indications & Usage

Sodium phenylbutyrate tablets are indicated as adjunctive therapy in the chronic management of patients with urea cycle disorders involving deficiencies of carbamylphosphate synthetase (CPS), ornithine transcarbamylase (OTC), or argininosuccinic acid synthetase (AS). It is indicated in all patients with neonatal-onset deficiency (complete enzymatic deficiency, presenting within the first 28 days of life). It is also indicated in patients with late-onset disease (partial enzymatic deficiency, presenting after the first month of life) who have a history of hyperammonemic encephalopathy. It is im...

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Data Sources

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