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Alphanate Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Alphanate (antihemophilic factor) (HUMAN) is a naturally occurring protein in the blood that helps blood to clot used to treat or prevent bleeding in people with hemophilia A. Common side effects of Alphanate include:
- flushing of the face
- vomiting, and
- fast heartbeat which may be lessened by giving this medication more slowly.
Other side effects of Alphanate include:
- injection site reactions (burning, redness, irritation)
- chills, and
Seek medical attention if you notice side effects of Alphanate that include symptoms of a serious allergic reaction, such as:
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing, and
- chest discomfort/tightness
Dosage of Alphanate is individualized, and is administered intravenously. Alphanate may interact with other drugs that affect bleeding or blood clotting. Tell your doctor all medications and supplements you use. During pregnancy, Alphanate should be used only if prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.
Our Alphanate (antihemophilic factor) (HUMAN) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Alphanate Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: signs of anemia (e.g., tiredness, low energy, pale skin color, shortness of breath), new or worsening bleeding/bruising.
This medication is made from human blood. There is a very small chance that you may get infections from this medication (e.g., viral infections such as hepatitis), even though careful screening of blood donors, special manufacturing processes, and many tests are all used to reduce this risk. Discuss the benefits and risks of treatment with your doctor. Tell your doctor immediately if you develop any signs of hepatitis or other infection, including fever, persistent sore throat, unusual tiredness, unusual drowsiness, joint pain, persistent nausea/vomiting, stomach/abdominal pain, yellowing eyes/skin, dark urine.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing, chest discomfort/tightness.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Alphanate (Antihemophilic Factor)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Alphanate FDA Prescribing Information: Side Effects
Serious adverse drug reactions (ADRs) observed in patients receiving ALPHANATE include anaphylaxis/hypersensitivity reactions. Thromboembolic events also have been observed in patients receiving ALPHANATE for VWD [see WARNINGS AND PRECAUTIONS].
Clinical Trial Experience
Because clinical trials are conducted under widely varying conditions, adverse drug reaction (ADR) rates observed in the clinical trials of a drug cannot be directly compared to rates in clinical trials of another drug and may not reflect the rates observed in clinical practice.
In a prospective clinical study with ALPHANATE, 23 subjects were exposed to 1217 infusions (median=42, range 2-160). The total number of exposure days was 1133, and the total number of months on study across all subjects was 234 (19.5 subject years). No ADRs or inhibitors to FVIII were reported during the study.
Von Willebr And Disease
In the prospective clinical study of ALPHANATE [using both ALPHANATE Solvent Detergent (A-SD, a previous generation product) and ALPHANATE Solvent Detergent/Heat Treated (A-SD/HT, the current generation product)] in subjects with von Willebrand Disease, ADRs occurred in 5 of 36 subjects (13.9%) treated with ALPHANATE.
Sixty-one total ADRs were reported in 204 infusions. The majority of ADRs were rated as mild (55 of 61 [90.2%]). Six ADRs (9.8%) were rated as moderate. No reactions rated as serious were reported. The adverse drug reaction grading scale is defined as follows:
- Mild: the event was noted but the administration of the compound was not interrupted; the event resolved spontaneously or no treatment was required beyond administration of nonprescription analgesics.
- Moderate: the administration of the compound was not necessarily interrupted; the event required momentary treatment with prescription drugs and produced no sequelae.
Overall, the proportion of infusions associated with ADRs was 14 of 204 infusions (6.9%). The most common ADRs reported ( > 1% of infusions) were pruritus, headache, backpain, paresthesia, respiratory distress, facial edema, pain, rash, and chills. One incident of pulmonary embolism was reported that was considered to have a possible relationship to the product. This subject received a dose of 60 IU VWF:RCo/kg body weight and the FVIII:C level achieved was 290%.
In the retrospective study conducted to determine the efficacy and safety of ALPHANATE (A-SD/ HT) in a surgical or invasive procedure setting as perioperative prophylaxis against excessive bleeding, [see Clinical Studies], 3 out of 39 subjects (7.7%) experienced 6 adverse drug reactions. Four were considered mild and 2 were considered moderate. No subject discontinued their treatment due to an adverse drug reaction. The adverse drug reactions were pruritus, paresthesia (2 events) and hemorrhage (all considered mild), and one event each of moderate hematocrit decrease and orthostatic hypotension.
One adverse drug reaction (pain) related to the treatment with heat-treated ALPHANATE (A-SD/ HT) was reported in the four pediatric subjects with von Willebrand Disease during the course of the prospective study and in none of the five pediatric subjects in the retrospective clinical study.
Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The most common post-marketing ADRs reported include allergic/hypersensitivity reactions, nausea, fever, joint pain, fatigue, and infusion site pain.
Read the entire FDA prescribing information for Alphanate (Antihemophilic Factor)
Additional Alphanate Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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