Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.
Blood tests: Calcitriol causes changes to the amounts of calcium, magnesium, and phosphate in the blood. Your doctor will schedule regular blood tests to ensure that the levels of these minerals continue to be appropriate while you are taking this medication.
Heart arrhythmias: Calcitriol increases the amount of calcium in the bloodstream. Too much calcium can interfere with the regular rhythm of the heart. If you have irregular heartbeat (arrhythmia) discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Hypercalcemia: It is important to follow your doctor's instructions for taking this medication. Hypercalcemia, or high blood calcium levels, can occur. To help prevent the risk of this, follow any dietary suggestions your doctor has provided. Do not increase or decrease the amount of calcium in your diet without discussing the change with your doctor first. Also, keep your appointments for blood tests to monitor your calcium levels. Symptoms of high blood calcium include bone pain, decreased appetite, drowsiness, dry mouth, fatigue, headache, metallic taste in mouth, muscle pain, stomach ache, thirst, weakness, and weight loss. If you experience any of these symptoms, stop taking the medication and contact your doctor immediately.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: This medication may pass into breast milk. If you are a breast-feeding mother and are taking calcitriol, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.