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Drug interactions

Calcium carbonate + Prednisone

Severity: Minor

Calcium carbonate and Prednisone: minor interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Corticosteroids reduce intestinal calcium absorption and increase urinary calcium loss, contributing to bone loss. Calcium supplements are commonly given alongside prednisone to offset this, so the combination is generally beneficial.

What this interaction means in plain words

Calcium carbonate and Prednisone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Calcium carbonate belongs to Gastrointestinal Tract; Prednisone belongs to Endocrine.

Evidence level: Moderate

Why it happens

Glucocorticoids decrease gut calcium absorption and increase renal calcium excretion.

What to do

Continue calcium with vitamin D during long-term prednisone therapy and consider bone density monitoring.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Calcium carbonate with Prednisone?

MediHelp rates the interaction as minor. Calcium carbonate and Prednisone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Corticosteroids reduce intestinal calcium absorption and increase urinary calcium loss, contributing to bone loss. Calcium supplements are commonly given alongside prednisone to offset this, so the combination is generally beneficial.

How serious is the interaction between Calcium carbonate and Prednisone?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Continue calcium with vitamin D during long-term prednisone therapy and consider bone density monitoring.

What other medicines interact with Prednisone?

MediHelp also lists interactions of Prednisone with, for example, Bcg vaccine live, Measles vaccine, Mifepristone. The full list is on the Prednisone page.

Full monographs, dosing and an interaction checker in the MediHelp app

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