How is von Willebrand factor given?
Von Willebrand factor is injected into a vein through an IV. You may be shown how to use an IV at home. Do not give yourself this medicine if you do not understand how to use the injection and properly dispose of needles, IV tubing, and other items used.
Read all patient information, medication guides, and instruction sheets provided to you. Ask your doctor or pharmacist if you have any questions.
Von Willebrand factor is a powder medicine that must be mixed with a liquid (diluent) before using it. If you are using the injections at home, be sure you understand how to properly mix and store the medicine. Mixed medicine must be used within 3 hours if you keep it at room temperature.
Do not shake the mixed medicine. Prepare your dose only when you are ready to give an injection.
Do not use the medicine if it looks cloudy or has particles in it. Call your pharmacist for new medicine.
Tell your doctor if you have any changes in weight. Von Willebrand factor doses are based on weight, and any changes may affect the dose.
You may need frequent medical tests to help your doctor determine how long to treat you with von Willebrand factor.
Use a disposable needle and syringe only once. Follow any state or local laws about throwing away used needles and syringes. Use a puncture-proof "sharps" disposal container (ask your pharmacist where to get one and how to throw it away). Keep this container out of the reach of children and pets.
Store this medicine in its original carton in a refrigerator until you are ready to prepare your dose. Do not allow the to medicine freeze.
You may also store the carton at room temperature for up to 12 months.
Do not use this medicine if the expiration date on the label has passed.