Ask a doctor or pharmacist if it is safe for you to take magnesium oxide if you are also using any of the following drugs:
an antibiotic;
a diuretic or "water pill";
penicillamine;
a blood thinner--warfarin, Coumadin, Jantoven; or
medicine to treat osteoporosis or Paget's disease--alendronate, ibandronate, risedronate, Fosamax, Boniva, Actonel, and others.
This list is not complete. Other drugs may interact with magnesium oxide, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.
 Magnesium oxide drug interactions (more detail)
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