Antihemophilic factor (AHF) injection is used to treat and prevent serious bleeding episodes in patients with a bleeding problem called hemophilia A. The bleeding episode may be related to an injury (trauma) or a surgical procedure. AHF is a protein that is produced naturally in the body. It helps the blood form clots to stop bleeding and prevents bleeding problems from happening as often.
Hemophilia A, also called classical hemophilia, is a condition where the body does not make enough AHF. If you do not have enough AHF and you become injured, your blood will not form clots properly. You might bleed into and damage your muscles and joints. AHF injection is given to increase the levels of AHF in the blood.
There are several different types of AHF. They are made from human blood or artificially by a man-made process (recombinant). AHF made from human blood has been treated and is not likely to contain harmful viruses, such as hepatitis B, hepatitis C, or human immunodeficiency virus (HIV), the virus that causes acquired immunodeficiency syndrome (AIDS). The man-made AHF products do not contain these viruses.
This medicine is available only with your doctor's prescription.
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of antihemophilic factor injection in children.
No information is available on the relationship of age to the effects of Hemofil® M in the pediatric population. Safety and efficacy have not been established.
Although appropriate studies on the relationship of age to the effects of Advate®, Eloctate™, Kogenate® FS, Kovaltry®, Novoeight®, and Xyntha® have not been performed in the geriatric population, no geriatric-specific problems have been documented to date. However, elderly patients are more likely to have age-related medical problems, which may require caution and an adjustment in the dose for patients receiving Advate®, Eloctate™, Kogenate® FS, Kovaltry®, Novoeight®, and Xyntha®.
No information is available on the relationship of age to the effects of antihemophilic factor injection in geriatric patients.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding.Antihemophilic Factor VIII (Recombinant)Antihemophilic Factor VIII Fc Fusion Protein RecombinantAntihemophilic Factor VIII (Recombinant) PegylatedAntihemophilic Factor (Recombinant) Porcine SequenceAntihemophilic Factor (Recombinant) Single Chain
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other medical problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
A doctor or other trained health professional will give you or your child this medicine in a hospital or clinic setting. This medicine is given through a needle placed in one of your veins.
This medicine may also be given at home to patients who do not need to be in a hospital or clinic. If you or your child is using this medicine at home, your doctor will teach you how to prepare and inject the medicine. Make sure you understand all of the instructions before giving yourself an injection. Your dose may change based on where you are bleeding. Do not use more medicine or use it more often than your doctor tells you to.
Use only the brand of this medicine that your doctor prescribed. Not all brands are prepared in the same way and the dose may be different.
Every package of medicine comes with a patient information leaflet. Read and follow the instructions carefully. Ask your doctor if you have any questions.
To prepare the medicine using 2 bottles (vials) or containers:
To prepare the medicine using a prefilled dual-chamber syringe (Xyntha®):
Use the mixture within 3 or 4 hours after it is prepared. It must not be stored and used later. Do not put the mixture in the refrigerator.
Do not reuse syringes and needles. Put used syringes and needles in a puncture-resistant disposable container, or dispose of them as directed by your doctor.
Talk to your doctor before traveling. You should plan to bring enough medicine for your treatment when traveling.
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
Call your doctor or pharmacist for instructions.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
The AHF products should be stored in the original container in the refrigerator. Do not let the packages freeze. They can also be kept at room temperature for short periods of time, such as 3 to 12 months. Store the medicine as directed by your doctor or by the manufacturer of the brand you are using. Protect the container from heat and direct light.
If you move the medicine from the refrigerator to room temperature, write the date you take it from the refrigerator on the container. The length of time the medicine can remain at room temperature will depend on the brand you use. If you have already stored the medicine at room temperature, do not return it to the refrigerator. If you do not use the medicine within the time recommended by the manufacturer, you must destroy the medicine.
It is very important that your doctor check you or your child closely while you are receiving this medicine to make sure it is working properly. Blood tests may be needed.
This medicine may cause serious types of allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Check with your doctor right away if you or your child has a rash, itching, hoarseness, trouble breathing, trouble swallowing, lightheadedness or dizziness, or any swelling of your hands, face, or mouth after you receive this medicine.
It is recommended that you carry an identification (ID) card or letter stating that you have hemophilia A and the type of medicine you are using. If you have any questions about what kind of identification to carry, check with your doctor.
Check with your doctor right away if you have any symptoms of parvovirus infection: fever, chills, drowsiness, runny nose, and followed by a rash or joint pain.
Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, unusual tiredness or weakness, or yellow eyes or skin. These could be symptoms of a serious liver problem.
This medicine is made from donated human blood. Some human blood products have transmitted certain viruses to people who have received them, although the risk is low. Human donors and donated blood are both tested for viruses to keep the transmission risk low. Talk with your doctor about this risk if you are concerned.
The stopper of the bottle (vial) contains dry natural rubber (a derivative of latex), which may cause allergic reactions in people who are sensitive to latex. Tell your doctor if you have a latex allergy before you start using this medicine.
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:
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:
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.