Magnesium is a naturally occurring mineral. Magnesium is important for many systems in the body especially the muscles and nerves.
Magnesium oxide is used as a supplement to maintain adequate magnesium in the body.
Magnesium oxide is also used as an antacid to treat indigestion, or as a laxative to relieve occasional constipation.
Magnesium oxide may also be used for purposes not listed in this medication guide.
Magnesium Oxide (Magnesium Oxide)
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Magnesium oxide may cause serious side effects. Stop using magnesium oxide and call your doctor at once if you have:
- rectal bleeding;
- coughing up blood or vomit that looks like coffee grounds;
- bloody or tarry stools; or
- no bowel movement after using magnesium oxide as a laxative.
Common side effects of magnesium oxide may include:
- diarrhea; or
- upset stomach.