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Crenessity

Crenessity Side Effects

Mae-Mae Han, PharmD CandidateCydnee Ng, PharmD
Reviewed by Mae-Mae Han, PharmD Candidate, Cydnee Ng, PharmD, Daisy Chau, PharmD
Last reviewed on April 11, 2025

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

Adults:

  • Tiredness (25%)
  • Headache (16%)
  • Low white blood cell count (14%)
  • Dizziness (8%)
  • Joint pain (7%)
  • Back pain (6%)

Children:

  • Low white blood cell count (37%)
  • Headache (25%)
  • Stomach pain (13%)
  • Tiredness (7%)
  • Nasal congestion (7%)

Less Common Side Effects

Adults:

  • Low appetite
  • Muscle pain

Children:

  • Nosebleed

Crenessity serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • Severe allergic reaction: throat tightness, difficulty breathing, swelling of your face, skin rash
  • Low hormone levels due to not taking enough steroids: severe tiredness, low blood pressure, low blood sugar, nausea, vomiting

Source: DailyMed

The following Crenessity side effects have also been reported

Side effects that you should report to your care team as soon as possible:

Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):

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