• Basic Info
• Top Questions
• Clinical Info
• Interactions

Before taking calcitriol, tell your doctor if you are taking any of the following medicines:

• digoxin (digitalis, Lanoxin, Lanoxicaps);

• cholestyramine (Questran, Prevalite);

• sevelamer (Renagel);

• ketoconazole (Nizoral);

• lanthanum (Fosrenol);

• seizure medication such as phenytoin (Dilantin) or phenobarbital (Solfoton);

• steroids such as prednisone, fluticasone (Advair), mometasone (Asmanex, Nasonex), dexamethasone (Decadron, Hexadrol) and others; or

• a (water pill) diuretic such as hydrochlorothiazide (HCTZ, Esidrix, Hydrodiuril, Microzide,Oretic), chlorothiazide (Diuril), chlorthalidone (Hygroton, Thalitone), indapamide (Lozol), metolazone (Mykrox, Zaroxolyn), and others.

This list is not complete and there may be other drugs that can interact with calcitriol. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

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 taking calcitriol and call your doctor at once if you have any of these serious side effects:

• increased thirst,

• urinating more than usual;

• pain in your lower back;

• fast, slow, or uneven heart rate;

• weakness, drowsiness, changes in behavior;

• bone pain, muscle weakness, loss of height;

• nausea, constipation, loss of appetite, weight loss;

• slow growth (in a child taking calcitriol); or

• dry mouth or a metallic taste.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.