Alprolix Side Effects

Generic name: coagulation factor ix

Medically reviewed by Drugs.com. Last updated on Mar 25, 2025.

Note: This document provides detailed information about Alprolix Side Effects associated with coagulation factor ix. Some dosage forms listed on this page may not apply specifically to the brand name Alprolix.

Applies to coagulation factor ix: intravenous powder for solution.

Serious side effects of Alprolix

Along with its needed effects, coagulation factor ix (the active ingredient contained in Alprolix) 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:

More common side effects

• cough
• fever

Less common side effects

• back or side pain
• blurred vision
• chest tightness
• chills
• confusion
• difficult or labored breathing
• fast heartbeat
• hives
• itching, pain, redness, swelling, tenderness, blue discoloration, or warmth of the skin at the injection site
• nausea
• swelling of the foot or leg
• vomiting

Incidence not known

• anxiety
• burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
• chest pain
• cloudy or bloody urine
• difficulty with swallowing
• dizziness
• dizziness, fainting, or lightheadedness when getting up suddenly from a lying or sitting position
• headache
• 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
• restlessness
• severe headaches of sudden onset
• sudden loss of coordination
• sudden onset of slurred speech
• sudden vision changes
• sweating
• 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 of Alprolix

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:

Less common side effects

• change in or loss of taste
• drowsiness
• feeling of warmth
• pain in the arms or legs
• redness of the face, neck, arms, and occasionally, the upper chest
• shaking

For healthcare professionals

Applies to coagulation factor ix: intravenous kit, intravenous powder for injection.

Hypersensitivity adverse events

• Frequency not reported: Hypersensitivity (including bronchospastic reactions and/or hypotension, anaphylaxis, development of high-titer inhibitors necessitating alternative treatment)^[Ref]

Hematologic

• Common (1% to 10%): Factor IX inhibition^[Ref]

Gastrointestinal

• Common (1% to 10%): Nausea, vomiting^[Ref]

Dermatologic

• Common (1% to 10%): Rash pruritic, hives^[Ref]

Local

• Common (1% to 10%): Injection site discomfort, injection site pain^[Ref]

Nervous system

• Common (1% to 10%): Headache, dysgeusia, lethargy, dizziness, shaking, drowsiness^[Ref]

Respiratory

• Common (1% to 10%): Dry cough, hypoxia, chest tightness, dyspnea^[Ref]

Renal

• Common (1% to 10%): Renal infarct^[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]

Ocular

• Common (1% to 10%): Blurred vision^[Ref]

Immunologic

• Common (1% to 10%): Influenza, cellulitis at injection site, phlebitis at injection site^[Ref]

Psychiatric

• Common (1% to 10%): Apathy, depression^[Ref]

Other

• Common (1% to 10%): Hemophilia (lack of efficacy), asthenia, fever, chills^[Ref]

Cardiovascular

• Common (1% to 10%): Flushing^[Ref]

Further information

Alprolix side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer