High-dose magnesium and zinc may compete for absorption.
Both minerals use similar transport mechanisms.
Take at different times if supplementing both at high doses. At typical multivitamin doses, this is not usually an issue.
Known drug category interactions for these supplements. Especially relevant if you take prescription medications.
Magnesium binds to these antibiotics in the gut, significantly reducing their absorption and effectiveness.
Take magnesium at least 2 hours before or 4-6 hours after these antibiotics.
Reference values for safe daily intake of these supplements.
UL is for supplemental magnesium only (not dietary). Diarrhea is the primary adverse effect.
Chronic high intake can cause copper deficiency and immune dysfunction.