Important Safety Information
You should not take CRYSVITA if:
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You take an oral phosphate supplement and/or a specific form of vitamin D supplement (such as calcitriol, paricalcitol, doxercalciferol, calcifediol).
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Your phosphorus levels from a blood sample are within or above the normal range for age.
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You have kidney problems.
What is the most important information you should know about CRYSVITA?
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Some patients developed allergic reactions (e.g., rash and hives) while taking CRYSVITA. Your doctor will monitor you for symptoms of an allergic reaction while you are taking CRYSVITA. Your treatment may need to be discontinued for serious allergic reactions.
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High levels of phosphorus in the blood have been reported in some patients taking CRYSVITA. This may be related to a risk of high calcium levels in the kidneys. Your doctor will collect blood samples to monitor your levels. If you are already taking CRYSVITA, dose interruption and/or dose reduction may be required based on your serum phosphorus levels.
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Administration of CRYSVITA may result in reactions at the injection site, such as hives, reddening of the skin, rash, swelling, bruising, pain, severe itching of the skin, and collection of blood outside of a blood vessel (i.e., hematoma). Call your doctor if you develop an injection site reaction. CRYSVITA may be discontinued if severe injection site reactions occur.
What are the possible side effects of CRYSVITA?
Before taking CRYSVITA, tell your doctor about all of your medications (including supplements) and medical conditions, including if you:
- Are taking oral phosphate and/or active vitamin D (such as calcitriol, paricalcitol, doxercalciferol, calcifediol).
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Are pregnant, think you may be pregnant, or plan to become pregnant. There is not enough experience to know if CRYSVITA may harm your unborn baby. Report pregnancies to the Kyowa Kirin, Inc. Adverse Event
reporting line at 1-844-768-3544.
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Are breastfeeding or plan to breastfeed. There is not enough experience to know if CRYSVITA passes into your breast milk. Talk with your doctor about the best way to feed your baby while you receive
CRYSVITA.
While taking CRYSVITA, tell your doctor if you experience:
- An allergic reaction such as rash or hives
- A rash, swelling, bruising, or other reaction at the injection site
- New or worsening restless legs syndrome
These are not all the possible side effects of CRYSVITA. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at (800) FDA-1088 or
www.fda.gov/medwatch
. You may also report side effects to Kyowa Kirin, Inc. at 1-844-768-3544.
For important risk and use information, please see the full Prescribing Information.