Yes, magnesium can turn stool black. This is usually caused by iron supplements, antacids containing magnesium, or magnesium supplements. Taking too much of these can cause the stool to be temporarily darker than normal.

Can magnesium change stool color?

Yes, magnesium can change the color of your stool. High doses of magnesium can cause your stool to be gray or tan in color. This is usually not a cause for concern, but if your stool has an unusual color for more than a few days, it may be a sign of an underlying health issue and you should see a doctor for further evaluation.

Will magnesium make your stool black?

Magnesium is unlikely to cause black stools, as it is a mineral that is not absorbed by the body. However, certain medications, such as iron supplements, can cause black stools. If you are taking any iron supplements, you should speak with your doctor to determine if they are the cause of your black stools.