Brand Names: Calcidol, Calciferol, Drisdol, Vitamin D2, Vitamin D2 (obsolete)
Generic Name: ergocalciferol (vitamin D2)
- What is ergocalciferol?
- What are the possible side effects of ergocalciferol?
- What is the most important information I should know about ergocalciferol?
- What should I discuss with my healthcare provider before taking ergocalciferol?
- How should I take ergocalciferol?
- What happens if I miss a dose?
- What happens if I overdose?
- What should I avoid while taking ergocalciferol?
- What other drugs will affect ergocalciferol?
- Where can I get more information?
What is ergocalciferol?
Ergocalciferol is used to treat hypoparathyroidism (decreased functioning of the parathyroid glands).
Ergocalciferol may also be used for purposes not listed in this medication guide.
What are the possible side effects of ergocalciferol?
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop taking this medicine and call your doctor at once if you have:
- chest pain, feeling short of breath;
- growth problems (in a child taking ergocalciferol); or
- early signs of vitamin D overdose--weakness, metallic taste in your mouth, weight loss, muscle or bone pain, constipation, nausea, and vomiting.
Less serious side effects may be more likely, and you may have none at all.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is the most important information I should know about ergocalciferol?
You should not take ergocalciferol if you have had an allergic reaction to vitamin D, or if you have high levels of calcium or vitamin D in your body, or any condition that makes it hard for your body to absorb nutrients from food (malabsorption).
Use only the recommended dose of ergocalciferol. An overdose could cause serious or life-threatening side effects.
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What should I discuss with my healthcare provider before taking ergocalciferol?
You should not take ergocalciferol if you have had an allergic reaction to vitamin D, or if you have:
- high levels of vitamin D in your body (hypervitaminosis D);
- high levels of calcium in your blood (hypercalcemia); or
- any condition that makes it hard for your body to absorb nutrients from food (malabsorption).
Tell your doctor if you have ever had:
Certain forms of ergocalciferol may contain ingredients you should know about, such as peanut or soybean oil, sugar, aspartame (phenylalanine), or certain food dyes. Ask a doctor before using ergocalciferol if you have allergies, diabetes, or phenylketonuria (PKU).
Too much vitamin D could harm an unborn baby, and your dose needs may be different during pregnancy. Tell your doctor if you are pregnant or if you become pregnant while taking ergocalciferol.
Ergocalciferol can pass into breast milk and may cause side effects in the nursing baby. Tell your doctor if you are breast-feeding.
Do not give ergocalciferol to a child without medical advice. Your child's dose will depend on age, weight, diet, and other factors.
How should I take ergocalciferol?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use only the recommended dose of ergocalciferol.
It may be best to take ergocalciferol after a meal, but you may take this medicine with or without food.
Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).
You will need frequent medical tests.
Your doctor may begin to reduce your ergocalciferol dose as your condition improves. Carefully follow all instructions about adjusting your dose. In some cases, there may be a very small difference in amount between safe and dangerous doses of this medicine.
Your doctor will determine how long to treat you with this medicine.
Ergocalciferol may be only part of a complete program of treatment that also includes dietary changes and taking calcium and vitamin supplements. Follow your doctor's instructions very closely.
Learn about the foods you should eat to make sure you get enough calcium and vitamin D in your diet. Your ergocalciferol dose may need to be adjusted as you make changes to your diet.
Store at room temperature away from moisture, heat, and light.
What happens if I miss a dose?
Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of vitamin D can cause serious or life-threatening side effects.
What should I avoid while taking ergocalciferol?
Ask a doctor or pharmacist before taking any multivitamins, mineral supplements, or antacids while you are taking ergocalciferol.
What other drugs will affect ergocalciferol?
Certain medications can make it harder for your body to absorb vitamin D. If you take other medications, take them at least 2 hours before or 2 hours after you take ergocalciferol.
Tell your doctor about all your other medicines, especially:
This list is not complete. Other drugs may affect ergocalciferol, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
Where can I get more information?
Your pharmacist can provide more information about ergocalciferol.
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