Ergocalciferol - oral

Patient Medicine Information
Why do I need this medicine?
Ergocalciferol is used to treat deficiency in vitamin D, hypoparathyroidism (a type of thyroid disease where the glands in the neck produce low levels of parathyroid hormone), and rickets (a condition resulting to softening of bones which commonly develops in children).

This medicine may be used to treat other conditions as decided by your doctor.
How do I take this medicine?
Take Ergocalciferol exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

Try to take this medicine at the same time each day.

The dose of this medicine will be decided by your doctor. Your doctor will advise you on the treatment timeframe depending on your condition and response to the medication.

Ergocalciferol must be taken regularly for it to be effective. Continue taking this medicine even when you feel better. Do not stop taking it unless instructed by the doctor.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
When should I not use this medicine?
Alert your doctor if you have the following conditions:
  • hypercalcaemia (high calcium levels in the blood)
  • high levels of vitamin D in your blood
  • abnormal sensitivity to the effects of vitamin D
  • metastatic calcification (abnormal calcium deposits in your body)
  • malabsorption syndrome (inability of your intestines to absorb nutrients from the food you eat)
as Ergocalciferol may not be suitable for you.
What should I take note of while taking this medicine?
Inform your doctor if you have the following conditions:
  • heart disease
  • kidney disease e.g. kidney stones
  • hyperphosphataemia (abnormally high level of phosphate in the blood)
Let your doctor know if you are pregnant or breastfeeding.

Why is it important to keep my appointments with the doctor?

Keep your appointments with your doctor. Your doctor needs to monitor your condition and check your response to the medication regularly.
  • Routine tests (e.g. calcium and phosphate levels, bone x-ray, kidney function) may be done while you are being treated with this medicine. Your doctor will advise you about how often you need to have these tests.
  • Regular monitoring for signs of high levels of vitamin D may also be needed.
What side effects could I experience?
Ergocalciferol may cause high levels of vitamin D in the blood which is characterised by the following: headache, nausea, vomiting, stomach pain, constipation, weakness, confusion, bone pain or stiffness, frequent urination, and excessive thirst.

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:
  • mineral oil (medicine for constipation)
  • medicines for water retention (water pills) e.g. hydrochlorothiazide, chlortalidone
  • medicines to treat TB (infection known as tuberculosis) e.g. rifampicin, isoniazid
This list does not include all medicines that may interact with Ergocalciferol.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Your doctor may give you calcium supplements while being treated with Ergocalciferol. It is important that you are taking enough calcium in your diet so that your body can respond properly to this medicine.

It may be helpful to discuss with your doctor or dietitian about the diet plan that would best suit you.

Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children. Protect from light.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on ergocalciferol - oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2024 MIMS. All rights reserved. Powered by
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