Do not use this medication if you have ever had an allergic reaction to vitamin D, or if you have:
- high levels of calcium in your blood (hypercalcemia);
- high levels of vitamin D in your body (hypervitaminosis D); or
- any condition that makes it hard for your body to absorb nutrients from food (malabsorption).
Before taking ergocalciferol, tell your doctor if you are allergic to any drugs or dyes, or if you have:
- heart disease;
- coronary artery disease;
- kidney disease; or
- an electrolyte imbalance.
If you have any of these conditions, you may need a dose adjustment or special tests to safely take this medication.
FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Ergocalciferol passes into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Do not take other vitamin or mineral supplements unless your doctor has told you to.
Avoid using calcium supplements or antacids without your doctor’s advice. Use only the specific type of supplement or antacid your doctor recommends.
Seek emergency medical attention if you think you have used too much of this medicine. An overdose of vitamin D can cause serious or life-threatening side effects.
Overdose symptoms may include headache, weakness, drowsiness, dry mouth, nausea, vomiting, constipation, muscle or bone pain, metallic taste in the mouth, weight loss, itchy skin, changes in heart rate, loss of interest in sex, confusion, unusual thoughts or behavior, feeling unusually hot, severe pain in your upper stomach spreading to your back, or fainting.
Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.
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 ergocalciferol and call your doctor at once if you have a serious side effect such as:
- thinking problems, changes in behavior, feeling irritable;
- urinating more than usual;
- chest pain, feeling short of breath; or
- early signs of vitamin D overdose (weakness, metallic taste in your mouth, weight loss, muscle or bone pain, constipation, nausea, and vomiting).
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Before taking ergocalciferol, tell your doctor if you are taking any of the following medicines:
- sucralfate (Carafate);
- mineral oil (sometimes taken as a laxative);
- seizure medication;
- steroids (prednisone and others);
- digoxin (digitalis, Lanoxin); or
- a diuretic (water pill) such as chlorothiazide (Diuril), hydrochlorothiazide (HCTZ, HydroDiuril, Hyzaar, Lopressor, Vasoretic, Zestoretic), 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 ergocalciferol. 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.
Calciferol, Drisdol, Vitamin D, ergocalciferol, and vitamin D2
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Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04