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Onureg (Azacitidine): Uses, Side Effects and Dosage

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200 mg, 300 mg
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Source: FDA drug labeling via NLM DailyMed · About this document

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

What is ONUREG?

ONUREG is a prescription medicine used for continued treatment of adults with acute myeloid leukemia (AML) who:

  • had a first complete remission (CR) following intensive induction chemotherapy with or without recovery of your blood cell counts, and
  • who are not able to complete intensive curative therapy.

It is not known if ONUREG is safe and effective in children under 18 years of age.

Do not take ONUREG if you:

  • are allergic to azacitidine or any of the ingredients in ONUREG. See the end of this leaflet for a complete list of ingredients in ONUREG.

Before taking ONUREG, tell your healthcare provider about all of your medical conditions, including if you:

  • have kidney or liver problems.

  • are pregnant or plan to become pregnant. ONUREG can harm your unborn baby.

    Females who are able to become pregnant:

    • Your healthcare provider should perform a pregnancy test before you start treatment with ONUREG.
    • You should use effective birth control (contraception) during treatment and for at least 6 months after your last dose of ONUREG.
    • Tell your healthcare provider right away if you become pregnant during treatment with ONUREG.

  • Males with a female sexual partner who can become pregnant:

    1. o You should use effective birth control (contraception) during treatment and for at least 3 months after your last dose of ONUREG.
  • are breastfeeding or plan to breastfeed. It is not known if ONUREG passes into your breast milk. Do not breastfeed during treatment and for 1 week after your last dose of ONUREG.

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

How should I take ONUREG?

  • Take ONUREG exactly as your healthcare provider tells you to take it.

  • Your healthcare provider will prescribe an anti-nausea medicine for you to take to help prevent nausea and vomiting during your treatment with ONUREG.

    • Take the anti-nausea medicine 30 minutes before each dose of ONUREG.
    • Your healthcare provider may decide to stop the anti-nausea medicine after your second cycle of ONUREG, if you do not have any nausea or vomiting.
  • Take ONUREG by mouth 1 time each day beginning on Day 1 through Day 14 of each 28-day cycle.

  • Take ONUREG with or without food at about the same time each day.

  • Swallow ONUREG tablets whole. Do not cut, crush, or chew the tablets.
  • If the powder from ONUREG tablets comes in contact with your skin, wash the area well right away with soap and water.
  • If the powder from ONUREG tablets comes in contact with your eyes or mouth (mucous membranes), flush the area right away with water.
  • If you miss a dose of ONUREG, or if you do not take your dose at the usual time, take the dose as soon as possible that day. Take your next dose at the regular time the next day. Do not take 2 doses on the same day to make up for a missed dose.
  • If you vomit after taking a dose of ONUREG, do not take another dose on the same day. Take your next dose at the regular time the next day.

What are the possible side effects of ONUREG?

ONUREG can cause serious side effects, including:

  • New or worsening low white blood cell counts (neutropenia). New or worsening low white blood cell counts can be severe during treatment with ONUREG. If your white blood cell counts become very low, you are at increased risk for infections, including a severe infection of the blood called sepsis that can lead to death. Your healthcare provider will check your white blood cell counts before and during treatment with ONUREG. Your healthcare provider may prescribe a medicine to help increase your white blood cell count if needed.

    Tell your healthcare provider right away if you get any of the following symptoms:

  • fever
  • chills
  • body aches
  • shortness of breath
  • fast heartbeat
  • feeling very tired or weak
  • unusual headaches
  • lightheadedness or dizziness
  • confusion or grogginess
  • New or worsening low platelet counts (thrombocytopenia). Low platelet counts are common but can also be severe during treatment with ONUREG. Your healthcare provider will check your platelet counts before and during treatment with ONUREG. Tell your healthcare provider right away if you have any unusual bruising or bleeding. Your healthcare provider may change your dose or tell you to stop taking ONUREG if you have low blood cell counts.

ONUREG may cause fertility problems in males and females, which may affect your ability to have children. Talk with your healthcare provider if you have concerns about fertility.

The most common side effects of ONUREG include:

  • nausea and vomiting. See "How should I take ONUREG?"
  • diarrhea. You may need to be treated with anti-diarrheal medicines.
  • tiredness or weakness
  • constipation
  • sore throat and runny nose
  • pneumonia
  • stomach area (abdominal) pain
  • joint pain
  • decreased appetite
  • low white blood cell counts
  • dizziness
  • skin infection
  • pain in arms or legs

These are not all of the possible side effects of ONUREG.

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 ONUREG?

  • Store blisters of ONUREG tablets at room temperature between 68°F to 77°F (20°C to 25°C).
  • Store ONUREG tablets in the original aluminum-aluminum blisters.
  • Talk to your healthcare provider about how to safely throw away (dispose of) any unused or expired ONUREG.

Keep ONUREG and all medicines out of the reach of children

General information about the safe and effective use of ONUREG.

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

What are the ingredients in ONUREG?

Active ingredient: azacitidine

Inactive ingredients:

Each core tablet contains: croscarmellose sodium, magnesium stearate, mannitol, and silicified microcrystalline cellulose.

The pink 200 mg tablet coating contains: hypromellose, iron oxide red, lactose monohydrate, polyethylene glycol, titanium dioxide, and triacetin.

The brown 300 mg tablet coating contains: black iron oxide, hypromellose, iron oxide red, iron oxide yellow, lactose monohydrate, polyethylene glycol, titanium dioxide, and triacetin.

Marketed by: Bristol-Myers Squibb Company, Princeton, NJ 08543 USA

ONUREG® is a trademark of Celgene Corporation, a Bristol-Myers Squibb company.

ONUPPI V6 6/2026

For more information, go to www.ONUREG.com or call 1-800-721-5072.

This Patient Information has been approved by the U.S. Food and Drug Administration. Revised: June 2026

About this document

Source: FDA drug labeling via NLM DailyMed · Application number: NDA 214120 · View the label on DailyMed

Revision date stated in the text: June 2026

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 Onureg

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Drug class Nucleoside Metabolic Inhibitor
Active ingredient Azacitidine
Dosage form Tablet, film coated
Route Oral
Marketing status listed in the FDA NDC Directory
Company (applicant) BRISTOL
FDA approval NDA 214120New Drug Application (NDA) Approved September 1, 2020
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
200 mg – 14 in 1 bottle NDC 59572-730-14
200 mg – 7 in 1 blister pack NDC 59572-730-07
300 mg – 14 in 1 bottle NDC 59572-740-14
300 mg – 7 in 1 blister pack NDC 59572-740-07

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.