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🏅 FDA Orphan Designation

Siklos

hydroxycarbamide (hydroxyurea)

Manufacturer: Theravia Pharma

Indicated for:
Hereditary persistence of fetal hemoglobin-sickle cell disease syndromeOrphanHyperimmunoglobulinemia D with periodic fever
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Black Box Warning (Boxed Warning)

A Boxed Warning is the FDA's strongest safety warning — it indicates serious or life-threatening risks identified during clinical trials or post-market surveillance. It does not mean the medication is unsafe for all patients; your prescriber weighs these risks against the benefits for your specific situation. Source: FDA-approved prescribing information.

View full prescribing information on DailyMed (NLM) ↗

FDA-Approved Indications (2)

To reduce the frequency of painful crises and to reduce the need for blood transfusions in pediatric patients, 2 years of age and older, with sickle cell anemia with recurrent moderate to severe painf

indicated to reduce the frequency of painful crises and to reduce the need for blood transfusions in adult and pediatric patients, 2 years of age and older, with sickle cell anemia with recurrent mode

Population: adult and pediatric patients ≥2 years

Indications & Usage

1 INDICATIONS AND USAGE SIKLOS ® is indicated to reduce the frequency of painful crises and to reduce the need for blood transfusions in adult and pediatric patients, 2 years of age and older, with sickle cell anemia with recurrent moderate to severe painful crises SIKLOS is an antimetabolite, indicated to reduce the frequency of painful crises and to reduce the need for blood transfusions in adult and pediatric patients, 2 years of age and older, with sickle cell anemia with recurrent moderate to severe painful crises. ( 1 )

Medical disclaimer: This information is for educational purposes only. Always consult a qualified healthcare provider before making treatment decisions. Data sourced from FDA and current as of our last update.