Ravicti

Glycerol phenylbutyrate · Horizon Therapeutics USA, Inc.
PRESCRIPTION ONLY (USA)

Ravicti ingredients

Active ingredientStrength
Glycerol Phenylbutyrate1.1 g/mL

What Ravicti is used for

The FDA lists the approved uses on the official label (below). In the EU, glycerol phenylbutyrate is approved as Ravicti for:

Ravicti is indicated for use as adjunctive therapy for chronic management of patients with urea cycle disorders (UCDs) including deficiencies of carbamoyl phosphate-synthase-I (CPS), ornithine carbamoyltransferase (OTC), argininosuccinate synthetase (ASS), argininosuccinate lyase (ASL), arginase I (ARG) and ornithine translocase deficiency hyperornithinaemia-hyperammonaemia homocitrullinuria syndrome (HHH) 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).

EU wording from the European Medicines Agency; US approved uses can differ.

Key facts

Brand
Ravicti
Generic name
Glycerol phenylbutyrate
Made by
Horizon Therapeutics USA, Inc.
Forms
Liquid
Given
Oral
Drug class
Nitrogen Binding Agent
FDA approval
New drug application (NDA) NDA203284
On the US market since
2013

Official information

Specialist medicine: started and supervised by a specialist doctor or hospital. This page is a plain-language summary of public official information, not medical advice; follow your doctor and the official product information.

Common questions

What is Ravicti?

Ravicti (Glycerol phenylbutyrate) is a specialist medicine made by Horizon Therapeutics USA, Inc., approved by the US FDA.

What are the ingredients of Ravicti?

Ravicti contains Glycerol Phenylbutyrate (1.1 g/mL).

Is Ravicti approved in Europe?

The same active substance is approved in the EU as Ravicti.

From the FDA National Drug Code directory (open.fda.gov, public domain) and the European Medicines Agency medicines list. Page made 5 November 2026 by Satya Babu.

← All specialty medicines, USA

For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.