Interaction guide

Minerals and antibiotics

Magnesium, calcium, zinc, iron, and antacids can bind some antibiotics in the gut and reduce absorption when timing overlaps.

Default spacing rule

Ask the pharmacist for the exact medication window. A common fluoroquinolone pattern is minerals at least 2 hours before or 4-6 hours after the antibiotic.

Interaction map

Minerals and antibiotics: the decision path

Check these

MagnesiumCalciumIronZincAluminum/magnesium antacids

Default action

Ask the pharmacist for the exact medication window. A common fluoroquinolone pattern is minerals at least 2 hours before or 4-6 hours after the antibiotic.

Why it matters

Reduced antibiotic exposureTreatment failure risk if spacing is ignoredConfusing labels on multis and fortified drinks

Products to check

  • Magnesium
  • Calcium
  • Iron
  • Zinc
  • Aluminum/magnesium antacids

Why it matters

  • Reduced antibiotic exposure
  • Treatment failure risk if spacing is ignored
  • Confusing labels on multis and fortified drinks

Sources and related pages

Imaoka et al. levofloxacin chelation studyFDA ciprofloxacin label spacing languageMagnesium and antibiotics timing guideMineral timing referenceMagnesium monograph

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These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease. Generated by AI. Always verify with a healthcare professional. Educational information only. Not a substitute for professional medical advice.