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Olpruva (Sodium phenylbutyrate): Uses, Side Effects and Dosage

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Facts
Status:
Prescription (Rx)
Strength:
2 g, 3 g, 3.67 g
Other brand names:
Active ingredient:

Patient information: uses, side effects, how to take - Olpruva

What is OLPRUVA?

  • OLPRUVA is a prescription medicine used along with certain therapy, including changes in diet, for the long-term management of adults and children weighing 44 pounds (20 kg) or greater and with a body surface area (BSA) of 1.2 m 2or greater, with urea cycle disorders (UCDs), involving deficiencies of carbamylphosphate synthetase (CPS), ornithine transcarbamylase (OTC) or argininosuccinic acid synthetase (AS).
  • Episodes of rapid increase of ammonia in the blood (acute hyperammonemia) may happen in people during treatment with OLPRUVA. OLPRUVA is not for the treatment of acute hyperammonemia, which can be life-threatening and requires emergency medical treatment.
  • OLPRUVA is not approved in children weighing less than 44 pounds (20 kg) or in children weighing 44 pounds (20 kg) or greater with a BSA of less than 1.2 m 2.

Before taking OLPRUVA, tell your or your child's healthcare provider about all of your medical conditions, including if you:

  • have heart problems
  • have kidney or liver problems
  • are pregnant or plan to become pregnant. It is not known if OLPRUVA will harm your unborn baby.

  • are breastfeeding or plan to breastfeed. It is not known if OLPRUVA passes into breastmilk. Talk to your healthcare provider about the best way to feed your baby during treatment with OLPRUVA.

Tell your healthcare provider about all the medicines you or your child take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Certain medicines may increase the level of ammonia in your blood or cause serious side effects when taken during treatment with OLPRUVA. Especially tell your healthcare provider if you or your child take:

  • corticosteroids
  • valproic acid
  • haloperidol
  • probenecid

Know the medicines you take. Keep a list of them to show your or your child's healthcare provider and pharmacist when you get a new medicine.

How should I or my child take OLPRUVA?

Read the detailed Instructions for Use that comes with OLPRUVA for information about the right way to prepare and take a dose of OLPRUVA.

  • Take OLPRUVA exactly as prescribed by your healthcare provider.
  • Your healthcare provider may change your dose if needed. Do not change your dose unless your healthcare provider tells you to.
  • Your healthcare provider will prescribe OLPRUVA based on your or your child's weight.
  • Take your OLPRUVA dose with food.
  • If you miss a dose of OLPRUVA, take it as soon as possible that same day.
  • Do notgive or take OLPRUVA through a gastrostomy or nasogastric tube.
  • If you take too much OLPRUVA, call your healthcare provider or go to the nearest hospital emergency room right away.

What are the possible side effects of OLPRUVA?

OLPRUVA can cause serious side effects, including:

  • Nervous system problems (neurotoxicity).Call your healthcare provider right away if you or your child get any of the following symptoms during treatment with OLPRUVA:
  • sleepiness
  • tiredness
  • lightheadedness
  • vomiting
  • nausea
  • headache
  • confusion
  • Low potassium levels in your blood (hypokalemia).Your healthcare provider will monitor your blood potassium levels during treatment with OLPRUVA and treat if needed.
  • Conditions related to swelling (edema).OLPRUVA contains salt (sodium), which can cause swelling from salt and water retention. Your healthcare provider will decide if OLPRUVA is right for you if you have certain medical conditions that cause edema, such as heart failure, liver problems or kidney problems.

The most common side effects of OLPRUVA include:

  • absent or irregular menstrual periods
  • decreased appetite
  • body odor
  • bad taste or avoiding foods that you ate prior to getting sick (taste aversion)

Your healthcare provider may do certain blood tests to check you or your child for side effects during treatment with OLPRUVA.

These are not all of the possible side effects of OLPRUVA. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store OLPRUVA?

  • Store OLPRUVA at room temperature between 68°F and 77°F (20°C and 25°C).
  • Keep OLPRUVA and all medicines out of the reach of children.

General information about the safe and effective use of OLPRUVA.

Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use OLPRUVA for a condition for which it was not prescribed. Do not give OLPRUVA to other people, even if they have the same symptoms that you have. It may harm them. You can ask your pharmacist or healthcare provider for information about OLPRUVA that is written for health professionals.

What are the ingredients in OLPRUVA?

Active ingredient: sodium phenylbutyrate

Inactive ingredients: amino methacrylate copolymer, hypromellose, microcrystalline cellulose, polyethylene glycol 6000, silicon dioxide, and talc.

Manufactured for:

Acer Therapeutics Inc.

300 Washington St.

Newton, MA 02458

For more information, go to www.OLPRUVA.com or call Acer Therapeutics Inc. at 1-844-600-2237.

© 2022 Acer Therapeutics Inc. All rights reserved.

INSTRUCTIONS FOR USE

OLPRUVA™ (ol proo vah)

(sodium phenylbutyrate)

for oral suspension

Read this Instructions for Use before taking OLPRUVA oral suspension and each time you get a refill. There may be new information. This Instructions for Use does not take the place of talking to your healthcare provider about your medical condition or treatment. Talk to your healthcare provider or pharmacist if you have any questions about how to take a dose of OLPRUVA.

This Instructions for Use contains information on how to prepare and take 1 dose of OLPRUVA.

Supplies needed to take 1 dose of OLPRUVA as prescribed:

  • One dosage envelope containing OLPRUVA and Mix-Aid packets. The contents of 1 envelope equals 1 full dose.
  • An open drinking cup
  • A spoon
  • Water
Step 1:Get an open drinking cup and spoon (See Figure A).
Step 2:Add about 4 ounces of water to an open drinking cup (See Figure B).

Step 3:Remove 1 dosage envelope from the kit (See Figure C).

Note:Each kit is divided into 30 individual sections. Each section contains 3 dosage envelopes for a total of 90 dosage envelopes.

Step 4:Open the dosage envelope and remove all packets (1 packet of Mix-Aid and 1 or 2 packets of OLPRUVA) (See Figure D).

Note:All packets in the dosage envelope must be used for 1 full dose.

Step 5:To open the Mix-Aid packet, tear or cut with scissors, straight across from the notch (See Figures E and F).

Step 6:Add the full contents of the Mix-Aid packet to the water (in the open drinking cup) and stir with the spoon for at least 30 seconds (See Figure G).

Note:The contents will not dissolve but will make the water thicker so that OLPRUVA does not sink to the bottom of the cup.

Do not drink yet.

Step 7:To open the OLPRUVA packet(s), fold at the notch and tear or cut with scissors. Add the full contents of the OLPRUVA packet(s) to the open drinking cup containing the mixture from Step 6 (the water and Mix-Aid) and stir for 15 seconds (See Figure H).

Drink the entire contents of the open drinking cup within 5 minutes to help prevent the coating from dissolving (See Figure I).

Note:The entire contents of each packet must be used for 1 full dose.

Step 8:

To make sure that you get the full dose, pour another 4 ounces of water in the open drinking cup, stir (See Figure J) and drink the entire contents (See Figure K).

OLPRUVA suspension is taken by mouth only.

Do nottake or give OLPRUVA suspension in a gastrostomy or nasogastric tube.

The mixed OLPRUVA suspension should be thrown away (discarded) after 30 minutes, if not used right away.

How should I store OLPRUVA?

  • Store OLPRUVA at room temperature between 68°F and 77°F (20°C and 25°C).
  • Keep OLPRUVA and all medicines out of the reach of children.

Manufactured for:

Acer Therapeutics Inc.

300 Washington St.

Newton, MA 02458

For more information, go to www.OLPRUVA.com or call Acer Therapeutics Inc. at 1-844-600-2237.

© 2022 Acer Therapeutics Inc. All rights reserved.

This Instructions for Use has been approved by the U.S. Food and Drug Administration. Issued: 12/2022

About this document

Source: FDA drug labeling via NLM DailyMed · Application number: NDA 214860 · View the label on DailyMed

Revision date stated in the text: December 2022

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for Olpruva

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Drug class Nitrogen Binding Agent
Active ingredient Sodium phenylbutyrate
Dosage form Kit
Route Oral
Marketing status not in the current FDA NDC Directory
Company (applicant) ACER
FDA approval NDA 214860New Drug Application (NDA) Approved December 22, 2022
Reference listed drug This is the reference listed drug (RLD) that generics are compared with.
Manufacturers 1 labelers list this drug on DailyMed
Packages (NDC)
Package
2 g – 1 in 1 box / 90 in 1 carton NDC 72542-200-02
2 g – 1 in 1 box / 90 in 1 carton NDC 72542-400-02
3 g – 1 in 1 box / 90 in 1 carton NDC 72542-300-02
3 g – 1 in 1 box / 90 in 1 carton NDC 72542-600-02
2 g, 3 g – 1 in 1 box / 90 in 1 carton NDC 72542-500-02
3 g, 3.67 g – 1 in 1 box / 90 in 1 carton NDC 72542-667-02

Source: FDA drug labeling via NLM DailyMed, data as of October 31, 2026. FDA data (DailyMed, Orange Book, Drug Shortages, enforcement reports). Not a substitute for the advice of a doctor or pharmacist.