Drug interactions
Risedronate + Selenium
Severity: Moderate
Risedronate and Selenium: moderate 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
Selenium supplements, particularly in mineral combinations, may bind risedronate in the gut and lower its absorption, possibly reducing efficacy.
What this interaction means in plain words
Risedronate and Selenium can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Risedronate belongs to Musculoskeletal; Selenium belongs to Gastrointestinal Tract.
Why it happens
Chelation or binding of risedronate by polyvalent cations in the gastrointestinal tract reduces absorption.
What to do
Take risedronate first with plain water and separate selenium or other supplements by at least 30 minutes, preferably several hours.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Risedronate
- Aluminum hydroxide + Risedronate Moderate
- Calcium acetate + Risedronate Moderate
- Calcium carbonate + Risedronate Moderate
- Calcium chloride + Risedronate Moderate
- Calcium citrate + Risedronate Moderate
- Calcium gluconate + Risedronate Moderate
Other interactions of Selenium
- Alendronate + Selenium Moderate
- Eltrombopag + Selenium Moderate
- Ibandronate + Selenium Moderate
- Penicillamine + Selenium Moderate
- Baloxavir marboxil + Selenium Minor
- Bictegravir + Selenium Minor
Frequently asked questions
Can I take Risedronate with Selenium?
MediHelp rates the interaction as moderate. Risedronate and Selenium can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Selenium supplements, particularly in mineral combinations, may bind risedronate in the gut and lower its absorption, possibly reducing efficacy.
How serious is the interaction between Risedronate and Selenium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take risedronate first with plain water and separate selenium or other supplements by at least 30 minutes, preferably several hours.
What other medicines interact with Risedronate?
MediHelp also lists interactions of Risedronate with, for example, Aluminum hydroxide, Calcium acetate, Calcium carbonate. The full list is on the Risedronate page.
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