TheraRadar
Data updated: Mar 29, 2026

RAVICTI

GLYCEROL PHENYLBUTYRATE
Approved 2013-02-01

RAVICTI is a nitrogen-binding agent indicated for the chronic management of patients with urea cycle disorders (UCDs) who cannot be managed by dietary protein restriction or amino acid supplementation alone. It must be used in combination with dietary protein restriction and, in some cases, additional dietary supplements such as essential amino acids or arginine. The drug is not intended for the treatment of acute hyperammonemia because more rapidly acting interventions are required to reduce plasma ammonia levels. Furthermore, the safety and efficacy of RAVICTI have not been established for the treatment of N-acetylglutamate synthase (NAGS) deficiency.

Source: FDA Label • HORIZON THERAP US

How RAVICTI Works

RAVICTI is a triglyceride containing phenylbutyrate (PBA), which is metabolized into the active moiety phenylacetic acid (PAA). PAA conjugates with glutamine in the liver and kidneys to form phenylacetylglutamine (PAGN), which is then excreted by the kidneys. Because PAGN contains two molecules of nitrogen, this process provides an alternative vehicle for the excretion of waste nitrogen. This pathway helps prevent the accumulation of toxic levels of ammonia that occur when the enzymes or transporters necessary for the urea cycle are deficient.

5
Indications
--
Phase 3 Trials
13
Years on Market

Details

Status
Prescription
First Approved
2013-02-01
Routes
ORAL
Dosage Forms
LIQUID

Companies

Active Ingredient: GLYCEROL PHENYLBUTYRATE

RAVICTI Approval History

Loading approval history...

What RAVICTI Treats

3 indications

RAVICTI is approved for 3 conditions since its original approval in 2013. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Urea Cycle Disorder
  • Hyperammonemia
  • N-Acetylglutamate Synthase Deficiency
Source: FDA Label
🔬

Active Pipeline

Pro

Ongoing clinical trials by development phase

Loading...

Key Completed Trials

Pro

Completed studies with published results, ranked by significance

Loading...
📊

Trial Timeline

Full development history with FDA approval milestones

|
Loading...
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.

RAVICTI FDA Label Details

Pro

Indications & Usage

FDA Label (PDF)

RAVICTI is indicated for use as a nitrogen-binding agent for chronic management of patients with urea cycle disorders (UCDs) who cannot be managed by dietary protein restriction and/or amino acid supplementation alone. RAVICTI must be used with dietary protein restriction and, in some cases, dietary supplements (e.g., essential amino acids, arginine, citrulline, protein-free calorie supplements). Limitations of Use: RAVICTI is not indicated for the treatment of acute hyperammonemia in patients with UCDs because more rapidly acting interventions are essential to reduce plasma ammonia levels. Th...

RAVICTI Patents & Exclusivity

Latest Patent: Sep 2030

Patents (14 active)

US9962359 Expires Sep 22, 2030
US9561197 Expires Sep 22, 2030
US10183003 Expires Sep 22, 2030
US10183002 Expires Sep 22, 2030
US10183004 Expires Sep 22, 2030
US8642012 Expires Sep 22, 2030
US10045959 Expires Sep 22, 2030
US9999608 Expires Sep 22, 2030
US9326966 Expires Sep 22, 2030
US10668040 Expires Sep 22, 2030
+ 4 more patents
Source: FDA Orange Book

Want competitive intelligence?

See who's developing similar drugs and track their progress

View Pipeline Dashboard

Data Sources

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