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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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Cinacalcet decreases levels of parathyroid hormone (PTH), calcium, and phosphorous in the body.
Cinacalcet is used to treat hypoparathyroidism (decreased functioning of the parathyroid glands) in people who are on long-term dialysis for kidney disease.
Cinacalcet is also used to lower calcium levels in people with cancer of the parathyroid gland.
Cinacalcet may also be used for other purposes not listed in this medication guide.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
Less serious side effects may include:
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
You should not take this medication if you are allergic to cinacalcet.
Before you take cinacalcet, tell your doctor if you have high blood pressure, heart disease, heart failure, a heart rhythm disorder, liver disease, or a history of seizures.
There are many other medicines that can interact with cinacalcet. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor. Keep a list of all the medicines you use and show this list to any doctor or other healthcare provider who treats you.
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.
Your blood will need to be tested on a regular basis while you are taking cinacalcet. Do not miss any follow-up visits to your doctor.
Call your doctor at once if you have a serious side effect such as numbness or tingly feeling around your mouth, fast or slow heart rate, muscle tightness or contraction, overactive reflexes, seizure, feeling short of breath, swelling, rapid weight gain, or feeling like you might pass out.
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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