Drug interactions
Ibandronate + Magnesium supplement
Severity: Moderate
Ibandronate and Magnesium supplement: 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
Oral magnesium binds ibandronate in the gut and can substantially reduce its absorption. This may weaken the antiresorptive effect of oral ibandronate.
What this interaction means in plain words
Ibandronate and Magnesium supplement 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.
Why it happens
Chelation of ibandronate by divalent magnesium cations in the gastrointestinal tract reduces absorption.
What to do
Take oral ibandronate after an overnight fast with plain water and wait at least 60 minutes before magnesium products or food. Take magnesium supplements later in the day.
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 Ibandronate
- Aluminum hydroxide + Ibandronate Moderate
- Calcium acetate + Ibandronate Moderate
- Calcium carbonate + Ibandronate Moderate
- Calcium chloride + Ibandronate Moderate
- Calcium citrate + Ibandronate Moderate
- Calcium gluconate + Ibandronate Moderate
Frequently asked questions
Can I take Ibandronate with Magnesium supplement?
MediHelp rates the interaction as moderate. Ibandronate and Magnesium supplement 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. Oral magnesium binds ibandronate in the gut and can substantially reduce its absorption. This may weaken the antiresorptive effect of oral ibandronate.
How serious is the interaction between Ibandronate and Magnesium supplement?
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 oral ibandronate after an overnight fast with plain water and wait at least 60 minutes before magnesium products or food. Take magnesium supplements later in the day.
What other medicines interact with Ibandronate?
MediHelp also lists interactions of Ibandronate with, for example, Aluminum hydroxide, Calcium acetate, Calcium carbonate. The full list is on the Ibandronate page.
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