For US residents only. For global information about Rayaldee, click here.

Indication
Important Safety Information
Prescribing Information
Healthcare Professionals

For US residents only.
For global information about Rayaldee, click here.

Medicare Part D Changes in 2025

Learn more
Person surrounded by circles with phosphorus, vitamin D, calcium, and parathyroid hormone written on them.

Real Results. Real Difference.

That’s Rayaldee®.

Rayaldee (calcifediol) extended-release capsules are for adult patients who have stage 3 or 4 chronic kidney disease (CKD) with secondary hyperparathyroidism (SHPT) and low vitamin D levels.

Real Results. Real Difference.

That’s Rayaldee®.

Rayaldee (calcifediol) extended-release capsules are for adult patients who have stage 3 or 4 chronic kidney disease (CKD) with secondary hyperparathyroidism (SHPT) and low vitamin D levels.

EXPERIENCE REAL PTH CONTROL WITH RAYALDEE

Vitamin D rises. PTH lowers.

How does Rayaldee treat SHPT?

SHPT, a common complication of CKD, can cause serious health problems such as faster progression to dialysis, bone fractures, or heart problems.

Rayaldee decreases the levels of parathyroid hormone (PTH) in your blood by gradually and safely increasing your vitamin D levels.

Find out more

Helping you find REAL answers

Your healthcare provider is the best source for information about your specific situation. Here, you can learn the basics about SHPT and Rayaldee. You can also find support and other resources.

About SHPT

SHPT and its effects on the body

Learn more

Getting Started

Starting treatment with Rayaldee

Learn more

Financial Support

Support for accessing Rayaldee

Learn more

Resources

Videos, downloadables, and more

Learn more

Important Safety Information

  • Before starting Rayaldee, the level of calcium in your blood should be in the normal range (below 9.8 mg/dL). Your doctor can tell you if your calcium level is right for starting Rayaldee.
  • Rayaldee can cause hypercalcemia and hypercalciuria (high levels of calcium in your blood and urine, respectively). You should tell your doctor if you are taking any other medications, including other vitamin D medications (prescription or over-the-counter vitamin D supplements). Your doctor may tell you to stop taking them while you are taking Rayaldee, as very high calcium levels due to high vitamin D levels could cause severe changes to your heart rhythm or seizures and require emergency treatment.
  • Tell your doctor about any and all medications you may be taking. While you are taking Rayaldee, tell your doctor if you receive any new prescriptions or start any new over-the-counter medications.
  • Tell your doctor immediately if you experience any of the following symptoms of very high calcium: feeling tired, difficulty thinking clearly, loss of appetite, nausea, vomiting, constipation, increased thirst, increased urination, weight loss, or any other abnormal symptoms or side effects.
  • While you are taking Rayaldee, your doctor will order laboratory tests to see how your SHPT is doing. These lab tests will also examine your blood levels of calcium, phosphorus, 25-hydroxyvitamin D, and PTH. Based on your test results, your dose of Rayaldee may be changed or stopped until your lab results improve.
  • The most common side effects of Rayaldee reported by patients in clinical trials were anemia (low levels of red blood cells or hemoglobin), infection in the nose and/or throat, high levels of blood creatinine (a lab test for measuring kidney function), shortness of breath, cough, congestive heart failure, and constipation.
  • Take your Rayaldee at bedtime and swallow your capsules whole; do not bite or chew them.
  • If you miss a dose, take Rayaldee at your next scheduled time. Do not take an extra dose to make up for the dose you missed.
  • Be sure to follow your doctor’s orders, including getting your laboratory tests done on time.
  1. If you have questions regarding why you were prescribed Rayaldee, please speak with your doctor.
  2. If you have questions regarding the support programs offered by OPKO Connect, you can call 1-844-414-OPKO (1-844-414-6756), option 1.
  3. If you have questions regarding Rayaldee or the disease state it is designed to treat, you may contact a Rayaldee Clinical Pharmacist at OPKO Connect at 1-844-414-OPKO (1-844-414-6756), option 2.
  4. You are encouraged to report side effects to the U.S. Food and Drug Administration (FDA) at www.fda.gov/medwatch or via phone at 1-800-FDA-1088 (1-800-332-1088) and to OPKO Renal at safetyreporting@opko.com or via phone at 1-305-575-4226.
  5. For more information about Rayaldee, please contact OPKO Medical Information at 1-844-729-2539 or medicalinformation@opko.com.

Please see Full Prescribing Information.

Indication and Limitations of Use

Rayaldee is a treatment for secondary hyperparathyroidism (SHPT) in adults with stage 3 or 4 chronic kidney disease (CKD) and low vitamin D levels (25-hydroxyvitamin D less than 30 ng/mL).

It is not for patients with stage 5 CKD or end-stage kidney disease on dialysis.

Important Safety Information

  • Before starting Rayaldee, the level of calcium in your blood should be in the normal range (below 9.8 mg/dL). Your doctor can tell you if your calcium level is right for starting Rayaldee.
  • Rayaldee can cause hypercalcemia and hypercalciuria (high levels of calcium in your blood and urine, respectively). You should tell your doctor if you are taking any other medications, including other vitamin D medications (prescription or over-the-counter vitamin D supplements). Your doctor may tell you to stop taking them while you are taking Rayaldee, as very high calcium levels due to high vitamin D levels could cause severe changes to your heart rhythm or seizures and require emergency treatment.
  • Tell your doctor about any and all medications you may be taking. While you are taking Rayaldee, tell your doctor if you receive any new prescriptions or start any new over-the-counter medications.
  • Tell your doctor immediately if you experience any of the following symptoms of very high calcium: feeling tired, difficulty thinking clearly, loss of appetite, nausea, vomiting, constipation, increased thirst, increased urination, weight loss, or any other abnormal symptoms or side effects.
  • While you are taking Rayaldee, your doctor will order laboratory tests to see how your SHPT is doing. These lab tests will also examine your blood levels of calcium, phosphorus, 25-hydroxyvitamin D, and PTH. Based on your test results, your dose of Rayaldee may be changed or stopped until your lab results improve.
  • The most common side effects of Rayaldee reported by patients in clinical trials were anemia (low levels of red blood cells or hemoglobin), infection in the nose and/or throat, high levels of blood creatinine (a lab test for measuring kidney function), shortness of breath, cough, congestive heart failure, and constipation.
  • Take your Rayaldee at bedtime and swallow your capsules whole; do not bite or chew them.
  • If you miss a dose, take Rayaldee at your next scheduled time. Do not take an extra dose to make up for the dose you missed.
  • Be sure to follow your doctor’s orders, including getting your laboratory tests done on time.
  1. If you have questions regarding why you were prescribed Rayaldee, please speak with your doctor.
  2. If you have questions regarding the support programs offered by OPKO Connect, you can call 1-844-414-OPKO (1-844-414-6756), option 1.
  3. If you have questions regarding Rayaldee or the disease state it is designed to treat, you may contact a Rayaldee Clinical Pharmacist at OPKO Connect at 1-844-414-OPKO (1-844-414-6756), option 2.
  4. You are encouraged to report side effects to the U.S. Food and Drug Administration (FDA) at www.fda.gov/medwatch or via phone at 1-800-FDA-1088 (1-800-332-1088) and to OPKO Renal at safetyreporting@opko.com or via phone at 1-305-575-4226.
  5. For more information about Rayaldee, please contact OPKO Medical Information at 1-844-729-2539 or medicalinformation@opko.com.

Please see Full Prescribing Information.