Benefix 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.
Common and Rare Side Effects
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 or nurse immediately if any of the following side effects occur:
Incidence not known
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
difficult or labored breathing
difficulty with swallowing
dizziness or lightheadedness
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
pains in the chest, groin, or legs, especially calves of the legs
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
severe headaches of sudden onset
sudden loss of coordination
sudden onset of shortness of breath for no apparent reason
sudden onset of slurred speech
sudden shortness of breath or troubled breathing
sudden vision changes
tightness in the chest
unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
unusual tiredness or weakness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Change in taste
loss of taste
pain in the arms or legs
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.