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Author Details
Written By
P. Thirumal Reddy
B. Pharm
Reviewed By
Dr. Tejashwin Adiga
MBBS
Last updated : 23 Jun 2026 | 07:03 AM (IST)
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Quick Summary
FACTOR IX
Last updated on 23 Jun 2026 | 07:03 AM (IST)
FACTOR IX
Background and Date of approval FACTOR IX
Factor IX is a coagulation factor that was approved for its medical use in 1997.
Uses of FACTOR IX
Factor IX Injection has been developed to treat Hemophilia B in adults and children. It is indicated to manage bleeding episodes after surgery and in patients diagnosed with congenital deficiency of Factor IX.
How is FACTOR IX administered?
A healthcare professional will administer Factor IX injection as an intravenous infusion to the patients. The dosage and number of infusions to be administered typically depend on the individual’s response to the therapy. This injection is available as a lyophilized powder in the doses Factor IX 500IU injection and 600IU injection.
Side Effects of FACTOR IX
The common side effects that are likely to occur while you are on the treatment with Factor IX Injection are fever, cough, nausea, injection site reaction, headache, dizziness, rash, blurred vision, drowsiness, vomiting, and flushing. If you experience symptoms such as breathing difficulty, chest tightness, wheezing, fast heartbeat, swelling of face, faintness, or hives, report to your doctor immediately.
Warnings
Contact your doctor immediately if you experience shortness of breath, fever, or any other discomfort while on treatment with Factor IX Injection. During the Factor IX injection treatment, your doctor may periodically monitor your blood cell counts, platelets, clotting time, blood sugar, electrolytes and kidney parameters to prevent serious complications. Report to your doctor if you have had a history of heart failure or liver problem. Tell your healthcare provider if you are about to undergo surgery or dental procedure while on treatment with Factor IX.
Precautions
There is no evidence regarding the impact of Factor IX on pregnancy and breastfeeding. It is advisable to tell your healthcare provider before starting treatment with Factor IX Injection if you are pregnant, breastfeeding, or planning to have a baby.
Word of Advice
Factor IX can make you feel dizzy, tired and make your vision blurry. Hence, you should avoid driving or handling machines while on this treatment. Apply cool compress at the injection site to reduce the pain.
Frequently Asked Questions
Q1.
What should you tell your healthcare provider before starting treatment with Factor IX Injection?
Tell your healthcare provider before starting treatment with Factor IX if you have any allergies, are pregnant, breastfeeding or taking prescription medicines or supplements.
Q2.
What are the signs of a blood clot?
Cramping or throbbing pain, breathlessness, chest pain, warmth, redness and swelling of arms or legs indicate the possibility of blood clot formation. Report to your doctor right away if you experience any of these symptoms.
Q3.
Why is Factor IX known as the Christmas factor?
Factor IX is otherwise known as Christmas factor, named after Stephen Christmas, who was the first person to get diagnosed with factor IX deficiency.
Q4.
How do you know if you are allergic to Factor IX injection?
Watch out for symptoms like wheezing, chest tightness, rash with itching, low BP, blue lips/gums and urticaria and reach out to your healthcare professional immediately if you notice any of these effects after taking Factor IX Injection.
Q5.
How is Factor IX Injection administered?
Factor IX Injection is given intravenously through infusion and the amount of drug will be measured based on the patient’s body weight, height and age. This injection should be administered under constant supervision of a healthcare provider to monitor for adverse reactions and allergies.
Q6.
How to store Factor IX Injection?
Store Factor IX Injection at room temperature or under refrigeration without freezing. The injection should be administered immediately after opening.
Q7.
What are the common side effects of Factor IX Injection?
Fever, cough, nausea, injection site reaction, headache, dizziness, rash, blurred vision, drowsiness, vomiting, and flushing are some of the most common side effects associated with the use of Factor IX Injection.
References
1. Pfizer Inc., US Food & Drug Administration, [Revised on Apr 2021] [Accessed on 16th Sep 2022], https://www.fda.gov/media/73556/download
2. Orlova et al., Coagulation Factor IX for Hemophilia B Therapy, Acta Naturae, 2012, 4(13), 62-73, [Accessed on 16th Sep 2022], https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3408704/pdf/AN20758251-13-062.pdf
Disclaimer
The drug information on this page is not a substitute for medical advice, it is meant for educational purposes only. For further details consult your doctor about your medical condition to know if you are eligible to receive this treatment.
