Medically reviewed by Erika Prouty, PharmD Taking too much magnesium can cause diarrhea and abdominal cramps, and severe ...

Magnesium may lead to side effects, especially if you take doses over 350 milligrams. In serious cases, high doses can lead to toxicity. Magnesium commonly treats constipation. It helps bring water ...

Lindsay Cook, PharmD, is a consultant pharmacist working with long-term care facilities. High doses of magnesium glycinate may cause diarrhea, gas, or stomach pain. Very high or long-term use can lead ...

Magnesium citrate helps relieve occasional constipation by increasing water in the stool. Higher doses can cause side effects like diarrhea, cramps, or nausea. People with certain health conditions ...