Skip to main content

Ravicti Side Effects

Generic name: glycerol phenylbutyrate

Medically reviewed by Last updated on Oct 5, 2023.

Note: This document contains side effect information about glycerol phenylbutyrate. Some dosage forms listed on this page may not apply to the brand name Ravicti.

Applies to glycerol phenylbutyrate: oral solution.

Serious side effects of Ravicti

Along with its needed effects, glycerol phenylbutyrate (the active ingredient contained in Ravicti) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking glycerol phenylbutyrate:

More common

Other side effects of Ravicti

Some side effects of glycerol phenylbutyrate may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Less common

Incidence not known

For Healthcare Professionals

Applies to glycerol phenylbutyrate: oral liquid.


The most frequently reported side effects included diarrhea, flatulence, and headache.[Ref]

Nervous system

Very common (10% or more): Headache (14%), dizziness[Ref]


Very common (10% or more): Diarrhea (16%), flatulence (14%), upper abdominal pain (pediatric patients), nausea , vomiting

Common (1% to 10%): Abdominal pain (adults), dyspepsia

Postmarketing reports: Retching, gagging, burning sensation in mouth[Ref]


Very Common (10% or more): Decreased appetite, hyperammonemia[Ref]


Common (1% to 10%): Fatigue[Ref]


Very common (10% or more): Rash (pediatric patients)

Postmarketing reports: Abnormal body odor, including from skin, hair, and urine[Ref]


1. (2013) "Product Information. Ravicti (glycerol phenylbutyrate)." Hyperion Therapeutics Inc

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.