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The power to treat XLH at its source

CRYSVITA targets the underlying cause of X-linked hypophosphatemia (XLH)

Actor portrayal

Could CRYSVITA be right for you or your child?

With XLH, the body doesn’t hold onto phosphorus, which is an essential mineral for bone health. CRYSVITA, the only FDA-approved treatment for XLH in adults and children 6 months of age or older, can help raise the amount of phosphorus in the body, restoring normal levels.

LEARN ABOUT CRYSVITA

CRYSVITA is proven to help manage
XLH in children and adults

Close up of Cera, a real CRYSVITA patient

Cera, real CRYSVITA patient

In children

CRYSVITA is proven to help manage XLH by:

Helping to heal rickets and improve leg abnormalities
Improving growth
Increasing and maintaining phosphorus levels in the blood

Efficacy in children

Aly, a real CRYSVITA patient, walking on a path

Aly, real CRYSVITA patient

In adults

CRYSVITA is proven to help manage XLH by:

Increasing and maintaining phosphorus levels in the blood
Healing fractures and pseudofractures
Helping to heal osteomalacia

Efficacy in adults

Ready to experience CRYSVITA?

Start the conversation with your doctor today.

Crysvita for Children

Crysvita for Adults

Need assistance or have questions about starting on CRYSVITA?

The Kyowa Kirin Cares program can help you start and stay on CRYSVITA treatment.

Hear from people taking CRYSVITA

Discover the stories and experiences of people treating their XLH with CRYSVITA.

DISCOVER patient stories

Bella and Leah, real CRYSVITA patients

Stay informed

Learn more about CRYSVITA, connect with a support community, and receive invites to important educational events.

What is CRYSVITA?

CRYSVITA is a prescription medicine used to treat adults and children 6 months of age and older with X-linked hypophosphatemia (XLH).

What is CRYSVITA?

CRYSVITA is a prescription medicine used to treat adults and children 6 months of age and older with X-linked hypophosphatemia (XLH).

Important Safety Information

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 you should know about CRYSVITA?

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.
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.
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?

Adverse reactions that were seen in children with XLH are:
- Fever
- Injection site reaction
- Cough
- Vomiting
- Pain in arms and legs
- Headache
- Tooth abscess
- Dental cavities
- Diarrhea
- Decreased vitamin D levels
- Toothache
- Constipation
- Muscle pain
- Rash
- Dizziness
- Nausea
Adverse reactions that were seen in adults with XLH are:
- Back pain
- Headache
- Tooth infection
- Restless legs syndrome
- Decreased vitamin D levels
- Dizziness
- Constipation
- Muscle spasms
- Phosphorus levels increased in the blood
Narrowing of the spaces within the spine is common in adults with XLH, and pressure on the spinal cord has been reported in adults taking CRYSVITA. It is not known if taking CRYSVITA worsens the narrowing of the spaces within the spine or the pressure on the spinal cord.

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.

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.

What is CRYSVITA?

CRYSVITA is a prescription medicine used to treat adults and children 6 months of age and older with X-linked hypophosphatemia (XLH).

Important Safety Information

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 you should know about CRYSVITA?

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.
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.
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?

Adverse reactions that were seen in children with XLH are:
- Fever
- Injection site reaction
- Cough
- Vomiting
- Pain in arms and legs
- Headache
- Tooth abscess
- Dental cavities
- Diarrhea
- Decreased vitamin D levels
- Toothache
- Constipation
- Muscle pain
- Rash
- Dizziness
- Nausea
Adverse reactions that were seen in adults with XLH are:
- Back pain
- Headache
- Tooth infection
- Restless legs syndrome
- Decreased vitamin D levels
- Dizziness
- Constipation
- Muscle spasms
- Phosphorus levels increased in the blood
Narrowing of the spaces within the spine is common in adults with XLH, and pressure on the spinal cord has been reported in adults taking CRYSVITA. It is not known if taking CRYSVITA worsens the narrowing of the spaces within the spine or the pressure on the spinal cord.

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.

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.