SIDE EFFECTS
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using calcitriol and call your doctor at once if you have a serious side effect such as:
weakness, headache, drowsiness;
nausea, vomiting, stomach pain, constipation;
loss of appetite;
dry mouth, increased thirst;
metallic taste in your mouth;
urinating more than usual;
fast, slow, or uneven heart rate;
changes in behavior;
muscle pain, bone pain, muscle weakness, loss of height;
slow growth (in a child taking calcitriol); or
severe pain in your upper stomach spreading to your back.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.