Specialty Drug
FACTOR IX (fak tir nine) is used in patients with hemophilia B to help control bleeding. Some products may also be used to control bleeding in patients with other disorders that prevent the blood from clotting properly. Compare coagulation factors.

Mononine Side Effects

What should I watch for?

Some factor IX products are derived from human plasma, and there is a small risk that they may contain certain types of virus or bacteria. All products are processed to kill most viruses and bacteria. If you have questions concerning the risk of viral infections, discuss them with your doctor or health care professional. If you are a newly diagnosed hemophiliac, you should have a hepatitis A and B vaccination.

If you are a hemophilia patient, carry an identification card with you at all times. The card should have your name, the name and dose of your medication(s), the name and phone number of your doctor or health care professional, and a contact person in case of emergency.


Interactions with Medications

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Less common or rare

Changes in facial skin color

fast or irregular breathing

puffiness or swelling of the eyelids or around the eyes

shortness of breath, troubled breathing, tightness in chest, and/or wheezing

skin rash, hives, and/or itching

Check with your doctor immediately if any of the following side effects occur:

More common

Bluish coloring (especially of the hands and feet)


dizziness or lightheadedness when getting up from a lying or sitting position

increased heart rate

large blue or purplish patches in the skin (at places of injection)

nausea or vomiting

pains in chest, groin, or legs (especially calves)

persistent bleeding from puncture sites, gums, or inner linings of the nose and/or mouth, or blood in the stool or urine

severe pain or pressure in the chest and/or the neck, back, or left arm

severe, sudden headache

shortness of breath or fast breathing

sudden loss of coordination

sudden and unexplained slurred speech, vision changes, and/or weakness or numbness in arm or leg

Check with your doctor immediately if any of the following side effects occur:

Less common

Burning or stinging at place of injection

changes in blood pressure or pulse rate





nausea or vomiting

redness of face

shortness of breath

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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