Side effects
Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.
Constipation
Diarrhoea
Pain in the stomach and abdominal area
Excess gas in the stomach and intestines (flatulence)
Nausea
Skin rashes
High blood calcium level (hypercalcaemia)
High calcium levels in the urine
The side effects listed above may not include all of the side effects reported by the drug's manufacturer.
For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.
How can this medicine affect other medicines?
Calcium salts may reduce the absorption from the gut of the following medicines:
- tetracycline-type antibiotics, eg tetracycline, doxycycline, minocycline
- some quinolone-type antibiotics, eg ciprofloxacin, norfloxacin
- iron preparations
- bisphosphonates, eg etidronate
- thyroxine
- sodium fluoride.
To avoid the calcium stopping these medicines from being adequately absorbed, the calcium dose should be separated from these medicines by at least four hours.
If the amount of calcium in the blood becomes too high, it may enhance the effect on the heart of digoxin or other cardiac glycosides.
Thiazide diuretics, eg bendrofluazide, can increase the amount of calcium in the body. If they are taken with calcium supplements this may therefore cause the calcium levels to rise too high.
The following medicines may reduce the effect of vitamin D:
- antiepileptic medicines, eg phenytoin
- barbiturates
- corticosteroids, eg hydrocortisone.
Other medicines containing the same active ingredients
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