Cadelius (Calcium/VitaminD3)

This medication is used to prevent or treat low blood calcium levels in people who do not get enough calcium from their diets. It may be used to treat conditions caused by low calcium levels such as bone loss (osteoporosis), weak bones (osteomalacia/rickets), decreased activity of the parathyroid gland (hypoparathyroidism), and a certain muscle disease (latent tetany). It may also be used in certain patients to make sure they are getting enough calcium (e.g., women who are pregnant, nursing, or postmenopausal, people taking certain medications such as phenytoin, phenobarbital, or prednisone).

Calcium plays a very important role in the body. It is necessary for normal functioning of nerves, cells, muscle, and bone. If there is not enough calcium in the blood, then the body will take calcium from bones, thereby weakening bones. Having the right amount of calcium is important for building and keeping strong bones.


Pharmacist - M.B.A. (Public Health) D.I.C.

Cadelius (Calcium/VitaminD3)

Why have I been prescribed Cadelius (Calcium/…

Garvan J. Lynch
MBA (Public Health)

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Why have I been prescribed Cadelius (Calcium/VitaminD3)?

Cadelius (Calcium/VitaminD3) may be prescribed by doctors or recommended by pharmacists to treat and prevent calcium deficiency, or when the diet or lifestyle does not provide enough, or when body requirements are increased. This medicine may also be prescribed or recommended for certain bone conditions, for example osteoporosis, or in pregnancy. It may also be given to patients receiving renal dialysis to remove the phosphate from food that cannot be removed by dialysis.

How does it work?

  • Calcium (600mg calcium carbonate)
  • Vitamin D3 (1,000IU colecalciferol)

It simply replaces the calcium lost in the body. The vitamin D3 makes it easier for the body to use the calcium.

When and how do I take it?

  • Cadelius (Calcium/VitaminD3) tablets are dissolved in water and then drank.
  • The tablets should be taken just before, during or just after each meal to make sure that the calcium binds to the phosphate in the stomach. Cadelius (Calcium/VitaminD3) should not be taken within 2 hours of eating foods rich in oxalic acid (found in spinach and rhubarb) or phytic acid (found in whole cereals).

What’s the dose?

Adults and elderly:

  • Two tablets a day, preferably one tablet in the morning and one in the evening.

Could it interact with other tablets?

Please inform your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.

In particular, the following medicines may interact with Cadelius (Calcium/VitaminD3) Tablets:

  • diuretics (water tablets); your calcium levels should be monitored regularly.
  • heart medicines (cardiac glycosides); you should be monitored by electrocardiogram and your serum calcium levels measured.
  • corticosteroids (e.g. prednisolone, dexamethasone); your dose of Cadelius (Calcium/VitaminD3) may need to be increased
  • tetracycline antibiotics; these should be taken at least two hours before, or four to six hours afterwards.
  • fluoride, or bisphosphonates; Cadelius (Calcium/VitaminD3) should be taken at least three hours afterwards.

What are the possible risks or side-effects?

Like all medicines, Cadelius (Calcium/VitaminD3) can cause side effects, although not everybody gets them. Side effects with Cadelius (Calcium/VitaminD3) may include:

Uncommon side effects (affecting less than 1 in 100 people):

  • too much calcium in your blood (hypercalcaemia) – the symptoms include nausea, vomiting, lack of appetite, constipation, stomach ache, bone pain, extreme thirst, a need to pass more water than usual, muscle weakness, drowsiness and confusion.
  • too much calcium in your urine (hypercalciuria)

Rare side effects (affecting less than 1 in 1000 people):

If you are taking Cadelius (Calcium/VitaminD3) Tablets because you are having kidney dialysis, tell your doctor if you notice any white deposits on your skin.

If any of these side-effects become serious, or if you notice any side-effect(s) not listed in this leaflet, please talk to your doctor or pharmacist.

Can I drink alcohol while taking it?

  • There is no known interaction between Cadelius (Calcium/VitaminD3) and alcohol.
  • Always ask your pharmacist/doctor however as other tablets you are taking may have a bearing on whether you can drink alcohol or not.

What if I’m pregnant/breastfeeding?

Cadelius (Calcium/VitaminD3) can be used in calcium deficiency during pregnancy and while breast feeding, but calcium intake including that from diet should not exceed 1500mg and 600 IU colecalciferol. Significant amounts of calcium and Vitamin D are secreted in milk during lactation. This should be taken into consideration when considering giving your child Vitamin D supplementation.

If you have any more questions please ask your Pharmacist.

Remember to keep all medicines out of reach of children
Please Note:
We have made every effort to ensure that the content of this information sheet is correct at time of publish, but remember that information about drugs may change. This sheet does not list all the uses and side-effects associated with this drug. For full details please see the drug information leaflet which comes with your medicine. Your doctor will assess your medical circumstances and draw your attention to any information or side-effects which may be relevant in your particular case.



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