Drug interactions
Calcium + Dexamethasone
Severity: Minor
Calcium and Dexamethasone: 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
Dexamethasone reduces intestinal calcium absorption and increases urinary calcium loss, which over time promotes bone loss. Calcium supplementation is commonly used to counter this. Short courses rarely matter clinically.
What this interaction means in plain words
Calcium and Dexamethasone 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 belongs to Gastrointestinal Tract; Dexamethasone belongs to Endocrine.
Why it happens
Glucocorticoids decrease intestinal calcium absorption and increase renal calcium excretion.
What to do
Provide adequate calcium and vitamin D during prolonged steroid courses and monitor bone health in long-term users.
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?
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Other interactions of Calcium
- Calcium + Ceftriaxone Contraindicated
- Acalabrutinib + Calcium Moderate
- Alendronate + Calcium Moderate
- Atazanavir + Calcium Moderate
- Baloxavir marboxil + Calcium Moderate
- Bendroflumethiazide + Calcium Moderate
Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Calcium with Dexamethasone?
MediHelp rates the interaction as minor. Calcium and Dexamethasone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dexamethasone reduces intestinal calcium absorption and increases urinary calcium loss, which over time promotes bone loss. Calcium supplementation is commonly used to counter this. Short courses rarely matter clinically.
How serious is the interaction between Calcium and Dexamethasone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Provide adequate calcium and vitamin D during prolonged steroid courses and monitor bone health in long-term users.
What other medicines interact with Calcium?
MediHelp also lists interactions of Calcium with, for example, Ceftriaxone, Acalabrutinib, Alendronate. The full list is on the Calcium page.
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