Drug interactions
Etidronate + Selenium
Severity: Minor
Etidronate and Selenium: 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
Etidronate binds polyvalent cations in the gut, which reduces its oral absorption. Mineral supplements may therefore lower etidronate bioavailability and weaken its effect. Selenium is not a classic polyvalent cation, so the effect is largely theoretical, though cation-containing supplements often contain it.
What this interaction means in plain words
Etidronate and Selenium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Etidronate belongs to Musculoskeletal; Selenium belongs to Gastrointestinal Tract.
Why it happens
Chelation of etidronate by co-ingested minerals in the gastrointestinal tract reduces absorption.
What to do
Take etidronate on an empty stomach and separate it from mineral or multivitamin supplements by at least 2 hours.
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 Etidronate
- Aluminum hydroxide + Etidronate Moderate
- Calcium acetate + Etidronate Moderate
- Calcium carbonate + Etidronate Moderate
- Calcium chloride + Etidronate Moderate
- Calcium citrate + Etidronate Moderate
- Calcium gluconate + Etidronate Moderate
Other interactions of Selenium
- Alendronate + Selenium Moderate
- Eltrombopag + Selenium Moderate
- Ibandronate + Selenium Moderate
- Penicillamine + Selenium Moderate
- Risedronate + Selenium Moderate
- Baloxavir marboxil + Selenium Minor
Frequently asked questions
Can I take Etidronate with Selenium?
MediHelp rates the interaction as minor. Etidronate and Selenium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Etidronate binds polyvalent cations in the gut, which reduces its oral absorption. Mineral supplements may therefore lower etidronate bioavailability and weaken its effect. Selenium is not a classic polyvalent cation, so the effect is largely theoretical, though cation-containing supplements often contain it.
How serious is the interaction between Etidronate and Selenium?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take etidronate on an empty stomach and separate it from mineral or multivitamin supplements by at least 2 hours.
What other medicines interact with Etidronate?
MediHelp also lists interactions of Etidronate with, for example, Aluminum hydroxide, Calcium acetate, Calcium carbonate. The full list is on the Etidronate page.
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