Understand the important safety information for CRYSVITA
You should not take CRYSVITA if:
- You take an oral phosphate supplement and/or a specific form of vitamin D supplement (such as calcitriol, paricalcitol, doxercalciferol, calcifediol)
- Your phosphorus levels from a blood sample are within or above the normal range for age
- You have kidney problems
What is the most important information I should know about CRYSVITA?
- Some patients developed allergic reactions (eg, rash and hives) while taking CRYSVITA. Your doctor will monitor you for symptoms of an allergic reaction while you are taking CRYSVITA
- 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
- 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 (ie, hematoma)
- If you are taking CRYSVITA for TIO, your doctor will have you stop your CRYSVITA treatment temporarily if you are undergoing treatment for your tumor (eg, surgical removal of the tumor or radiation therapy)
The following side effects were observed in more than 10% of adults who were treated with CRYSVITA every 4 weeks in Studies 6 and 7
Possible side effects in adults with TIO who were treated with CRYSVITA were:
- Tooth abscess
- Muscle spasms
- Injection site reaction
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)
- 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
- 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.
For important risk and use information, please see the full Prescribing Information.
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