Who should not use FEIBA?
You should not use FEIBA if:
- You had a previous severe allergic reaction to the product
- You have Disseminated Intravascular Coagulation (DIC), or signs of small blood vessel clots throughout the body
- You have sudden blood vessel clots or blocked blood vessels, (such as, heart attack or stroke)
What other important information should I know about FEIBA?
Events involving blood clots blocking blood vessels (such as blood clot in vein, blood clot in the lung, heart attack, and stroke) can occur with FEIBA, particularly after receiving high doses (above 200 units per kg per day) and/or in patients with risk factors for clotting.
At first sign or symptom of a sudden blood vessel clot or blocked blood vessel (such as chest pain or pressure, shortness of breath, fever, altered consciousness, vision, or speech, limb or abdomen swelling and/or pain), stop FEIBA administration right away and seek immediate emergency medical treatment.
Infusion of FEIBA should not exceed a single dose of 100 units per kg body weight and daily doses of 200 units per kg of body weight. Maximum injection or infusion rate must not exceed 2 units per kg of body weight per minute.
The safety and efficacy of FEIBA for breakthrough bleeding in patients receiving emicizumab has not been established. Events of thrombotic microangiopathy (TMA), a condition where blood clots and damage occur in small blood vessels, were reported in an emicizumab (Hemlibra®) clinical trial where patients received FEIBA with emicizumab as part of a treatment plan for breakthrough bleeding. If you are on emicizumab and are taking or anticipate taking FEIBA for a breakthrough bleeding episode, tell your doctor immediately because there are specific safety considerations and you must be closely monitored by your hemophilia treater or treatment center.
Allergic reactions, including severe, sometimes fatal allergic reactions that can involve the whole body, can occur following the infusion of FEIBA. Stop using FEIBA promptly and call your doctor or get emergency treatment right away if you get a rash, hives or welts, experience itching, tightness of the throat, vomiting, abdominal pain, chest pain or tightness, difficulty breathing, lightheadedness, dizziness, nausea or fainting.
Because FEIBA is made from human plasma it may carry a risk of transmitting infectious agents, such as viruses, variant Creutzfeldt-Jakob disease (vCJD) and, theoretically, the Creutzfeldt-Jakob disease (CJD).
What are the possible side effects of FEIBA?
The most common side effects observed during the prophylaxis clinical study were low number of red blood cells, diarrhea, bleeding into a joint, positive test for hepatitis B surface antibodies, nausea, and vomiting.
The serious side effects seen with FEIBA are allergic reactions and clotting events involving blockage of blood vessels, which include stroke, blockage of the main blood vessel to the lung, and deep vein blood clots.
Call your doctor right away about any side effects that bother you during or after you stop taking FEIBA.
What other medications might interact with FEIBA?
Talk with your doctor about the possibility of formation of blood clots when taking drugs that may prevent clot breakdown such as tranexamic acid, and aminocaproic acid. There have not been adequate studies of the use of FEIBA and rFVIIa (NovoSeven®), or emicizumab together, or one after the other. Use of drugs that may prevent clot breakdown within approximately 6 to 12 hours after the administration of FEIBA is not recommended.
Please click here for FEIBA full Prescribing Information, including BOXED WARNING on blood clots, and discuss with your doctor.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit https://www.fda.gov/medwatch, or call 1-800-FDA-1088.