That headline is too broad. Magnesium can interact with some medicines, but it does not mean that everyone taking those medicines must avoid magnesium.
Medicines that can interact with magnesium
Certain antibiotics — magnesium can bind to some antibiotics in the digestive tract and reduce their absorption. Examples include tetracyclines and fluoroquinolones. They usually need to be taken several hours apart.
Levothyroxine — magnesium can reduce its absorption, so spacing the doses is generally recommended.
Bisphosphonates such as alendronate — magnesium can interfere with absorption and should be separated from the medicine.
Some diuretics and other medicines can affect magnesium levels in the body, so your clinician may need to monitor electrolytes.
Medications that affect kidney function or magnesium levels require particular caution because the kidneys normally remove excess magnesium.
⚠️ Don’t automatically stop your medication
If you take prescription medicines, don’t discontinue them because of a social-media warning. The safest approach is to check the specific medication, magnesium product, and dose with a pharmacist or doctor.
Also, magnesium from normal foods is generally not the same concern as taking a high-dose magnesium supplement.
If you give me the names of the medications you’re taking, I can explain the specific magnesium interaction and how much spacing is typically recommended.
