Antihemophilic Factor
Obizur is a recombinant anti-inhibitor coagulant complex (factor VIII) used to treat and prevent bleeding episodes in patients with hemophilia A who have developed inhibitors (antibodies) against factor VIII. It works by replacing the missing or inhibited clotting factor to help the blood clot properly. This medication is specifically designed for patients who can no longer use standard factor VIII replacement therapy due to inhibitor development.
Obizur is a recombinant factor VIII medication used to treat and prevent bleeding in hemophilia A patients who have developed inhibitors against factor VIII.
Key facts at a glance
- RxNorm
- 1593092
- Generic
- Obizur
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment and prevention of bleeding episodes in patients with hemophilia A who have developed acquired inhibitors to factor VIII. It is specifically indicated for those who cannot receive standard factor VIII replacement therapy due to inhibitor antibodies.
Obizur contains recombinant B-domain deleted factor VIII, which replaces the missing or inhibited clotting factor in the blood. This helps restore the normal clotting cascade by enabling the formation of stable fibrin clots through the intrinsic pathway.
Administered by intravenous injection under medical supervision. Common side effects may include headache, flushing, and injection site reactions. Patients should be monitored for signs of hypersensitivity reactions and thrombotic events. Treatment response varies by individual.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy