Coagulation factor IX is a man-made protein that is similar to a natural protein in the body that helps the blood to clot.

Coagulation factor IX is used to treat or prevent bleeding in people with hemophilia B. This medication is not for treating people with hemophilia A factor VII deficiency.

Coagulation factor IX may also be used for purposes other than those listed here.

Do not use this medication if you have ever had an allergic reaction to a clotting factor medication, or if you are allergic to hamster proteins.

Before using this medication, tell your doctor if you are allergic to latex rubber, or if you have liver disease, coronary artery disease (hardening of the arteries), or a history of stroke or heart attack.

To be sure this medication is helping your condition, your blood will need to be tested on a regular basis. Do not miss any scheduled appointments.

Carry an ID card or wear a medical alert bracelet stating that you have a bleeding disorder in case of emergency. Any doctor, dentist, or emergency medical care provider who treats you should know about your condition.

Do not use this medication if you have ever had an allergic reaction to a clotting factor medication, or if you are allergic to hamster proteins.

Before using this medication, tell your doctor if you are allergic to latex rubber, or if you have:

• liver disease;

• coronary artery disease (hardening of the arteries); or

• history of stroke or heart attack.

FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

It is not known whether coagulation factor IX passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.