BeneFIX 250 Int'l Units Side Effects
Generic name: coagulation factor ix
Medically reviewed by Drugs.com. Last updated on Oct 15, 2022.
Note: This document contains side effect information about coagulation factor ix. Some dosage forms listed on this page may not apply to the brand name BeneFIX 250 Int'l Units.
Applies to coagulation factor ix: intravenous powder for solution.
Serious side effects
Along with its needed effects, coagulation factor ix (the active ingredient contained in BeneFIX 250 Int'l Units) 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 while taking coagulation factor ix:
- Back or side pain
- blurred vision
- chest tightness
- difficult or labored breathing
- fast heartbeat
- itching, pain, redness, swelling, tenderness, blue discoloration, or warmth of the skin at the injection site
- swelling of the foot or leg
Incidence not known
- burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
- chest pain
- cloudy or bloody urine
- difficulty with swallowing
- dizziness, fainting, or lightheadedness when getting up suddenly from a lying or sitting position
- itching, skin rash
- large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or genitals
- pain, redness, or swelling in the arm or leg
- 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 slurred speech
- sudden vision changes
- tenderness, pain, swelling, warmth, skin discoloration, and prominent superficial veins over affected area
- trouble breathing
- unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
- vision problems
Other side effects
Some side effects of coagulation factor ix 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 or loss of taste
- feeling of warmth
- pain in the arms or legs
- redness of the face, neck, arms, and occasionally, the upper chest
For Healthcare Professionals
Applies to coagulation factor ix: intravenous kit, intravenous powder for injection.
Common (1% to 10%): Factor IX inhibition[Ref]
Common (1% to 10%): Nausea, vomiting[Ref]
Common (1% to 10%): Rash pruritic, hives[Ref]
Common (1% to 10%): Injection site discomfort, injection site pain[Ref]
The renal infarct occurred in a hepatitis C antibody positive patients 12 days after treatment of a bleeding episode; the relation of the infarct to the prior administration of this drug is uncertain.[Ref]
Common (1% to 10%): Renal infarct[Ref]
Common (1% to 10%): Blurred vision[Ref]
Common (1% to 10%): Hemophilia (lack of efficacy), asthenia, fever, chills[Ref]
Common (1% to 10%): Flushing[Ref]
More about BeneFIX 250 Int'l Units (coagulation factor ix)
- Check interactions
- Dosage information
- During pregnancy
- Drug class: miscellaneous coagulation modifiers
Related treatment guides
1. "Product Information. Benefix (coagulation factor IX)." Wyeth Laboratories (2022):
2. "Product Information. Ixinity (coagulation factor IX)." Cangene bioPharma, Inc. (2022):
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.