About human factorix
Plasma-derived factor IX replacement
Used for
- Treatment and prevention of bleeding in haemophilia B (factor IX deficiency)
- Bleeding control around surgery in haemophilia B
Usual adult dose
Dose is individualized by bleed severity, target factor IX level, and recovery; calculated in IU/kg and given intravenously.
Usual dose in children
Same individualized, weight-based approach as adults; specialist dosing is required.
Common side effects
- Allergic reactions, including rarely severe reactions
- Headache or fever
- Injection-site reactions
- Development of factor IX inhibitors
Important warnings
- Use only under specialist supervision with factor IX level monitoring.
- Stop and seek urgent care for signs of serious allergy.
- Inhibitors may make treatment less effective, especially in previously untreated patients.
- Thrombosis is possible, particularly with risk factors or excessive dosing.
Pregnancy
Limited data; use only when clearly needed, with specialist guidance.
Breastfeeding
Limited data; discuss use with a clinician; treatment may be needed for significant bleeding.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.