How To Use Magnesium Oxide

Magnesium oxide comes in the form of a tablet or capsule to be taken by mouth with water 1-4 times a day. 

Read the package instructions on your magnesium supplement carefully. Do not take a bigger dose or more frequent doses than indicated on the package or prescribed by your doctor. Do not stay on magnesium oxide supplements for more than 2 weeks unless your doctor tells you to.

If you are taking magnesium oxide as a laxative to regularize bowel habits, take it with a full glass (240 mL or 8 ounces) of cold water or fruit juice. Do not take it on an empty stomach late in the day. Also, make sure you do not take magnesium oxide as a laxative for more than one week without talking to your doctor.

Take magnesium oxide at least 2 hours away from other medications for the most benefit.

Missed dose: If you are taking magnesium oxide regularly and you miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take the next scheduled dose according to your regular dosing schedule. Do not take extra medicine to make up for a missed dose.

Storage: Store magnesium oxide at room temperature (between 15-30° C or 59-86° F) away from moisture, heat, and direct light in a tightly closed container. Do not store medications in the bathroom where they can be exposed to moisture and heat. Keep all medications safely out of reach of children and pets.

Unused medicine: Unused magnesium oxide should be disposed of in a way that children, other people, and pets cannot get to them. Do not throw magnesium oxide in the trash or flush it down the toilet. The best way to dispose of expired or unneeded magnesium oxide is through a drug take-back program. Learn more about proper medication disposal. 

NOTE: This medication guide is a summary and may not contain all possible drug information on magnesium oxide. The information contained here may not be up-to-date. This sheet is for information purposes only. If you have questions about magnesium oxide, talk to your doctor or pharmacist for medical advice.

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