Magnesium maintains energy and helps muscles function as an essential mineral. A magnesium overdose occurs because of excess amounts in the body.
Foods with magnesium include fruits, vegetables, nuts and whole grains, but it is rare to experience an overdose through foods,
according to Healthgrades.
A magnesium overdose usually happens when too much of the mineral is taken through supplements, such as pills or liquids. The condition is also known as magnesium toxicity or hypermagnesemia.
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The kidneys normally excrete excess magnesium from the body. However, people with kidney failure may experience an overdose when taking medications that contain the mineral. Patients with kidney disease are usually advised to avoid magnesium supplements or medication,
Healthline reports.
People with gastrointestinal disorders or heart disease are also at increased risk for a magnesium overdose from supplements or medications.
Signs and symptoms of an overdose include:
- Nausea and vomiting
- Muscle weakness
- Lethargy
- Low blood pressure
- Irregular heartbeat
- Urine retention
- Respiratory distress
- Cardiac arrest
- Coma
- Death
Ingesting large amounts of milk of magnesia, Epsom salts, or magnesium supplements can lead to an overdose, especially for people with kidney problems,
according to the University of Maryland Medical Center.
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A calcium carbonate with magnesium overdose results from taking too many antacids with these ingredients. Calcium carbonate with magnesium is found in such products as Rolaids, Tums, Mylanta, and Maalox,
notes the National Institutes of Health.
Symptoms of a calcium carbonate with magnesium overdose include:
- Bone pain from chronic overuse
- Decreased reflexes
- Poor balance
- Irregular heartbeat
- Shallow and rapid breathing
- Skin flushing
- Lack of alertness
- Dry mouth
- Constipation
- Diarrhea
People need immediate medical attention from the overdose. Medical personnel will need to monitor temperature, breathing rate, blood pressure, and pulse. Treatment may include blood and urine tests, activated charcoal, breathing support, intravenous fluids, and medicine.
Proper treatment helps most people fully recover.
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