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Primary hyperparathyroidism is a disorder of the parathyroid glands, also called parathyroids. "Primary" means this disorder originates in the parathyroids: One or more enlarged, overactive parathyroid glands secretes too much parathyroid hormone (PTH). In secondary hyperparathyroidism, a problem such as kidney failure causes the parathyroids to be overactive. This publication focuses on primary hyperparathyroidism.
The parathyroid glands are four pea-sized glands located on the thyroid gland in the neck. Occasionally, a person is born with one or more of the parathyroid glands embedded in the thyroid, in the thymus, or located elsewhere around this area. In most such cases, however, the glands function normally.
Though their names are similar, the thyroid and parathyroid glands are entirely different glands, each producing distinct hormones with specific functions. The p...
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You should not take this medication if you are allergic to cinacalcet.
If you have any of these other conditions, you may need a dose adjustment or special tests to safely use this medication:
FDA pregnancy category C. It is not known whether cinacalcet is harmful to an unborn baby. Before taking this medication, tell your doctor if you are pregnant or plan to become pregnant during treatment.
It is not known whether cinacalcet passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Do not give this medication to a child without a doctor's advice.
Take this medication exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.
Your doctor may occasionally change your dose to make sure you get the best results from this medication.
Cinacalcet works best if you take it with food or shortly after eating a meal.
Do not crush or break a cinacalcet tablet. Swallow the pill whole.
To be sure your calcium and phosphorous levels do not get too low, your blood will need to be tested 1 week after you start taking cinacalcet or whenever your dose is changed. You may also need blood tests on a regular basis during treatment. Do not miss any follow-up visits to your doctor.
Store cinacalcet at room temperature away from moisture, light, and heat.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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