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Belinostat Side Effects

Medically reviewed by Last updated on Mar 29, 2023.

Applies to belinostat: intravenous powder for solution.

Serious side effects of Belinostat

Along with its needed effects, belinostat 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 or nurse immediately if any of the following side effects occur while taking belinostat:

More common

  • Black, tarry stools
  • bleeding gums
  • bloating or swelling of the face, arms, hands, lower legs, or feet
  • blood in the urine or stools
  • bluish color
  • blurred vision
  • changes in skin color
  • chest pain
  • confusion
  • cough
  • decreased urine
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • dry mouth
  • fainting
  • fast heartbeat
  • fever or chills
  • increased thirst
  • irregular heartbeat
  • loss of appetite
  • mood changes
  • muscle pain or cramps
  • nausea or vomiting
  • numbness or tingling in the hands, feet, or lips
  • pale skin
  • pinpoint red spots on the skin
  • rapid, shallow breathing
  • sore throat
  • sweating
  • tenderness
  • tightness in the chest
  • troubled breathing with exertion
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • unusual weight gain or loss

Incidence not known

  • Abdominal or stomach pain or tenderness
  • clay colored stools
  • dark urine
  • decreased appetite
  • headache
  • joint pain, stiffness, or swelling
  • lower back or side pain
  • skin rash or itching
  • yellow eyes or skin

Other side effects of Belinostat

Some side effects of belinostat 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:

Incidence not known

For Healthcare Professionals

Applies to belinostat: intravenous powder for injection.


The most commonly observed adverse reactions included nausea, fatigue, pyrexia, anemia, and vomiting.

The most commonly reported reasons for treatment discontinuation included anemia, febrile neutropenia, fatigue, and multi-organ failure.[Ref]


Very common (10% or more): Anemia (32%), thrombocytopenia (16%)[Ref]


Very common (10% or more): Peripheral edema (20%), prolonged QT (11%), hypotension (10%), phlebitis (10%)[Ref]


Very common (10% or more): Rash (20%), pruritus (16%)[Ref]


Very common (10% or more): Nausea (43%), vomiting (29%), constipation (23%), diarrhea (23%), decreased appetite (15%), abdominal pain (11%)[Ref]


Very common (10% or more): Hypokalemia (12%)[Ref]

Nervous system

Very common (10% or more): Headache (15%), dizziness (10%)[Ref]


Very common (10% or more): Fatigue (37%), pyrexia (35%), chills (16%)[Ref]


Very common (10% or more): Dyspnea (22%), cough (19%)[Ref]


1. Product Information. Beleodaq (belinostat). Spectrum Pharmaceuticals Inc. 2014.

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.