Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 8/29/2025

Hydroxyurea Dosing in Sickle Cell Disease with Renal Impairment

Introduction to Hydroxyurea Therapy

  • The American Society of Hematology suggests combination therapy with hydroxyurea and erythropoiesis-stimulating agents for SCD patients with chronic kidney disease and worsening anemia 1, 2

Monitoring and Dosing Recommendations

  • For patients receiving combination therapy with erythropoiesis-stimulating agents, hemoglobin levels should not exceed 10 g/dL to reduce the risk of vaso-occlusive complications 2
  • Bone marrow suppression (decreased counts in one or more cell lines) is common with hydroxyurea therapy and requires temporary discontinuation if severe 3