What should you expect when starting Hydrea (hydroxyurea)?
Hydrea works by decreasing the number of blood cells your bone marrow produces, which helps manage myeloproliferative neoplasms. Since you've just started, it's important to know what to watch for during these early weeks.
Common side effects include:
- Digestive Show Full Answer
What should you expect when starting Hydrea (hydroxyurea)?
Hydrea works by decreasing the number of blood cells your bone marrow produces, which helps manage myeloproliferative neoplasms. Since you've just started, it's important to know what to watch for during these early weeks.
Common side effects include:
- Digestive issues like nausea, diarrhea, or constipation
- Mild stomach upset
- Skin darkening in some areas
- Fatigue or weakness
Managing side effects:
Many myMPNteam members find taking Hydrea with food or at bedtime helps reduce nausea. One member shared: "Early on, hydroxyurea gave me an upset stomach, but once I started to take it before bed, I didn't notice."
Some members also take medications like Pepcid to help with stomach upset, especially when taking their meds with food.
Important monitoring:
Your doctor will likely check your blood counts regularly to ensure the medication isn't lowering them too much. This is normal and helps your doctor adjust your dose if needed.
Sun protection:
Hydrea can increase skin cancer risk, so use strong sunscreen and limit sun exposure.
If you experience severe side effects or feel unwell, contact your doctor. Everyone responds differently, and your care team can adjust your treatment plan if needed.
November 1, 2025
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