UCD Patients and Families

Caring for a loved one with a urea cycle disorder (UCD) can affect the whole family. Many times, families have to find a "new normal" because a lot of time may be spent caring for the person who has the urea cycle disorder.

Babies born with severe urea cycle disorders usually show symptoms in the first 24 hours of life. Some symptoms that may appear as ammonia levels increase include:

  • Excessive sleepiness
  • Crying often
  • Feeding problems
  • Vomiting
  • Dehydration
  • Floppiness
  • Breathing problems

But sometimes, babies, children, and adults may not show symptoms of a UCD right away. Signs that appear later may include:

  • Disliking meat or other high-protein foods
  • Upset stomach or vomiting
  • Mental confusion or hyper behavior
  • Feeling tired

Who should be tested for a UCD gene?

You can pass a UCD gene to your child without knowing it. Someone who is a "carrier" of a UCD gene has one normal gene and one UCD gene. Some carriers may not know they have a UCD gene until their child is diagnosed because they may not have the symptoms of a UCD. But in the case of mothers who carry a UCD gene that is part of the OTC sub-group, they may have subtle signs and symptoms, which should not be ignored. Subtle signs and symptoms include headaches, confusion, and trouble concentrating. If you experience these symptoms, you should talk with your doctor. Getting the family tested regardless of who experiences symptoms is important, especially the mother of a child with UCD. Talk to your doctor about getting tested. UCD symptoms can appear at any time and can lead to serious health problems if not treated right away.

If you or your child has been diagnosed with a UCD, it's important to pay attention to other relatives, especially children, who may have similar signs and symptoms. A UCD should be considered in any person with unexplained abnormal behavior that may include:

  • Low appetite
  • Irritability
  • Fogginess
  • Low energy
  • Vomiting
  • Heavy or rapid breathing
  • Aggressive behavior

If you or any family members are having these symptoms, talk to your doctor and find out if you should be tested for a UCD.

RAVICTI Liquid syringe icon

About RAVICTI

A liquid medicine that can be taken by mouth that's FDA-approved to treat most types of UCDs for newborns, babies, children, and adults. See approved uses below.

Find out more
RAVICTI Liquid syringe icon
David, UCD caregiver
David, UCD caregiver

Real Patients. Real Stories.

"After my son was diagnosed, we found out that my wife had UCD symptoms, too." – David | Caregiver

Talk to someone who's been there

APPROVED USES and IMPORTANT SAFETY INFORMATION for RAVICTI
What is the most important safety information I should know about RAVICTI?
RAVICTI may cause serious side effects, including: Nervous system side effects (Neurotoxicity).
 The breakdown of RAVICTI produces the byproduct phenylacetate (PAA), which may cause nervous system side effects.

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What is RAVICTI?

RAVICTI (glycerol phenylbutyrate) Oral Liquid is a prescription medicine used for long-term management of high blood levels of ammonia (hyperammonemia) caused by a condition called a urea cycle disorder (UCD). RAVICTI should be used if the UCD cannot be managed with a low-protein diet and dietary supplements alone. RAVICTI must be used along with a low-protein diet and in some cases, dietary supplements.

RAVICTI is not used to treat extremely high levels of ammonia in the blood (hyperammonemic crisis) in people with UCDs.

It is not known if RAVICTI is safe and effective for the treatment ofN-acetylglutamate synthase (NAGS) deficiency.

IMPORTANT SAFETY INFORMATION

What is the most important safety information I should know about RAVICTI?

RAVICTI may cause serious side effects, including:

Nervous system side effects (Neurotoxicity). The breakdown of RAVICTI produces the byproduct phenylacetate (PAA), which may cause nervous system side effects.

Call your doctor or get medical help right away if you have any of these symptoms while taking RAVICTI:

  • sleepiness
  • lightheadedness
  • change in taste
  • problems with hearing
  • confusion
  • problems with memory
  • worsening of numbness, tingling, or burning in your hands or feet
  • headache
  • feeling very tired (fatigue)
  • nausea
  • vomiting

Who should not take RAVICTI?

Do not take RAVICTI if you are allergic to phenylbutyrate. Call your doctor or go to the nearest hospital emergency room if you experience any of the following symptoms of an allergic reaction while taking RAVICTI:

  • wheezing
  • shortness of breath
  • cough
  • low blood pressure
  • flushing
  • nausea
  • skin rash

What should I tell my doctor before taking RAVICTI?

Tell your doctor about any medical conditions and if you:

  • Have liver or kidney problems.
  • Have pancreas or bowel (intestine) problems.
  • Are pregnant or plan to become pregnant. It is not known if RAVICTI will harm your unborn baby.
    • Pregnancy Registry: There is a Pregnancy Registry for women who take RAVICTI just before becoming pregnant or who become pregnant during treatment with RAVICTI. The purpose of this registry is to collect information about the health of you and your baby. Talk to your doctor about how you can join the Pregnancy Registry. For more information about this registry, call 1-855-823-2595 or visit www.ucdregistry.com.
  • Are breastfeeding or plan to breastfeed. It is not known if RAVICTI passes into your breast milk. Breastfeeding is not recommended during treatment with RAVICTI. Talk to your doctor about the best way to feed your baby if you take RAVICTI.

What are possible side effects of RAVICTI?

RAVICTI may cause serious side effects, including:

  • See "What is the most important information I should know about RAVICTI?"

The most common side effects of RAVICTI in adults include:

  • diarrhea
  • gas
  • headache
  • abdomen (stomach) pain
  • vomiting
  • tiredness
  • decreased appetite
  • indigestion or heartburn

The most common side effects of RAVICTI in children 2 years to 17 years of age include:

  • upper abdomen (stomach) pain
  • rash
  • nausea
  • vomiting
  • diarrhea
  • decreased appetite
  • headache

The most common side effects of RAVICTI in children 2 months to less than 2 years of age include:

  • low white blood cell count (neutropenia)
  • vomiting
  • diarrhea
  • fever
  • reduced food intake
  • cough
  • stuffy nose
  • runny nose
  • skin rash
  • small round bumps on the skin

The most common side effects of RAVICTI in children less than 2 months of age include:

  • vomiting
  • rash
  • gastroesophageal reflux
  • increased levels of liver enzymes in the blood
  • decreased appetite and reduced food intake
  • low red blood cell count (anemia)
  • cough
  • loss of too much body fluid (dehydration)
  • too much acid in the blood (acidosis)
  • high blood platelet count (thrombocytosis)
  • low blood platelet count (thrombocytopenia)
  • low blood neutrophil count (type of white blood cell) (neutropenia)
  • high white blood cell count (lymphocytosis)
  • diarrhea
  • gas
  • constipation
  • fever
  • drowsiness (lethargy)
  • irritability
  • agitation

These are not all of the possible side effects of RAVICTI. Call your doctor for medical advice about side effects.

For additional important safety information, click here for the Full Prescribing Information and Medication Guide and discuss with your doctor.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit http://www.fda.gov/medwatch or call 1-800-FDA-1088.

What is RAVICTI?

RAVICTI (glycerol phenylbutyrate) Oral Liquid is a prescription medicine used for long-term management of high blood levels of ammonia (hyperammonemia) caused by a condition called a urea cycle disorder (UCD). RAVICTI should be used if the UCD cannot be managed with a low-protein diet and dietary supplements alone. RAVICTI must be used along with a low-protein diet and in some cases, dietary supplements.

RAVICTI is not used to treat extremely high levels of ammonia in the blood (hyperammonemic crisis) in people with UCDs.

It is not known if RAVICTI is safe and effective for the treatment ofN-acetylglutamate synthase (NAGS) deficiency.

IMPORTANT SAFETY INFORMATION

What is the most important safety information I should know about RAVICTI?

RAVICTI may cause serious side effects, including:

Nervous system side effects (Neurotoxicity). The breakdown of RAVICTI produces the byproduct phenylacetate (PAA), which may cause nervous system side effects.

Call your doctor or get medical help right away if you have any of these symptoms while taking RAVICTI:

  • sleepiness
  • lightheadedness
  • change in taste
  • problems with hearing
  • confusion
  • problems with memory
  • worsening of numbness, tingling, or burning in your hands or feet
  • headache
  • feeling very tired (fatigue)
  • nausea
  • vomiting

Who should not take RAVICTI?

Do not take RAVICTI if you are allergic to phenylbutyrate. Call your doctor or go to the nearest hospital emergency room if you experience any of the following symptoms of an allergic reaction while taking RAVICTI:

  • wheezing
  • shortness of breath
  • cough
  • low blood pressure
  • flushing
  • nausea
  • skin rash

What should I tell my doctor before taking RAVICTI?

Tell your doctor about any medical conditions and if you:

  • Have liver or kidney problems.
  • Have pancreas or bowel (intestine) problems.
  • Are pregnant or plan to become pregnant. It is not known if RAVICTI will harm your unborn baby.
    • Pregnancy Registry: There is a Pregnancy Registry for women who take RAVICTI just before becoming pregnant or who become pregnant during treatment with RAVICTI. The purpose of this registry is to collect information about the health of you and your baby. Talk to your doctor about how you can join the Pregnancy Registry. For more information about this registry, call 1-855-823-2595 or visit www.ucdregistry.com.
  • Are breastfeeding or plan to breastfeed. It is not known if RAVICTI passes into your breast milk. Breastfeeding is not recommended during treatment with RAVICTI. Talk to your doctor about the best way to feed your baby if you take RAVICTI.

What are possible side effects of RAVICTI?

RAVICTI may cause serious side effects, including:

  • See "What is the most important information I should know about RAVICTI?"

The most common side effects of RAVICTI in adults include:

  • diarrhea
  • gas
  • headache
  • abdomen (stomach) pain
  • vomiting
  • tiredness
  • decreased appetite
  • indigestion or heartburn

The most common side effects of RAVICTI in children 2 years to 17 years of age include:

  • upper abdomen (stomach) pain
  • rash
  • nausea
  • vomiting
  • diarrhea
  • decreased appetite
  • headache

The most common side effects of RAVICTI in children 2 months to less than 2 years of age include:

  • low white blood cell count (neutropenia)
  • vomiting
  • diarrhea
  • fever
  • reduced food intake
  • cough
  • stuffy nose
  • runny nose
  • skin rash
  • small round bumps on the skin

The most common side effects of RAVICTI in children less than 2 months of age include:

  • vomiting
  • rash
  • gastroesophageal reflux
  • increased levels of liver enzymes in the blood
  • decreased appetite and reduced food intake
  • low red blood cell count (anemia)
  • cough
  • loss of too much body fluid (dehydration)
  • too much acid in the blood (acidosis)
  • high blood platelet count (thrombocytosis)
  • low blood platelet count (thrombocytopenia)
  • low blood neutrophil count (type of white blood cell) (neutropenia)
  • high white blood cell count (lymphocytosis)
  • diarrhea
  • gas
  • constipation
  • fever
  • drowsiness (lethargy)
  • irritability
  • agitation

These are not all of the possible side effects of RAVICTI. Call your doctor for medical advice about side effects.

For additional important safety information, click here for the Full Prescribing Information and Medication Guide and discuss with your doctor.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit http://www.fda.gov/medwatch or call 1-800-FDA-1088.