It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
This medicine may lower the calcium in your blood. If you have any of these symptoms, check with your doctor right away: abdominal or stomach cramps, confusion, convulsions, difficulty with breathing, irregular heartbeats, mood or mental changes, muscle cramps in the hands, arms, feet, legs, or face, numbness and tingling around the mouth, fingertips, or feet, shortness of breath, or tremors.
Contact your doctor right away if you have any changes to your heart rhythm. You might feel dizzy or faint, or you might have a fast, pounding, or uneven heartbeat. Make sure your doctor knows if you or anyone in your family has ever had a heart rhythm problem such as QT prolongation.
Do not take other medicines unless they have been discussed with your doctor. Taking other medicines together with cinacalcet may require your doctor to change the dose of one of the medicines or cinacalcet.