"Methylnaltrexone, which is approved for the treatment of opioid-related constipation, appears to extend survival in people receiving opioids for advanced cancer pain, according to new research.
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Sensipar Consumer (continued)
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Cinacalcet can cause low calcium blood levels. Your doctor will check your calcium blood levels while your are taking this medication. Tell your doctor right away if you have any of the following symptoms of low calcium levels: numb/tingling skin, severe muscle spasms, seizures, unusual tiredness, fast/irregular/pounding heartbeat.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the Sensipar (cinacalcet) Side Effects Center for a complete guide to possible side effects
PRECAUTIONS: Before taking cinacalcet, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: low levels of calcium in the blood (hypocalcemia), seizures.
Very low levels of calcium can affect the heart rhythm (QT prolongation, ventricular arrhythmias). This risk may be increased if you have certain conditions or are taking drugs that can affect the heart rhythm. Before taking cinacalcet, tell your doctor of all the drugs you take and if you have heart rhythm problems or other heart problems (such as heart failure, low blood pressure).
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
It is unknown if this medication passes into breast milk. Consult your doctor before breast-feeding.
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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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