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People experiencing low magnesium symptoms will have higher blood pressure, higher blood sugar, more headaches and muscle cramping, worse anxiety, and trouble sleeping. It’s easy to overlook recommending magnesium, especially if lab results are within normal range.
Lack of magnesium may lead to irritability, muscle weakness, and irregular heartbeat. Injectable magnesium is given only by or under the supervision of a health care professional. Some oral magnesium preparations are available only with a prescription. Others are available without a prescription.
Hypomagnesemia happens when you have a low level of magnesium, an electrolyte, in your blood. It can be mild or severe and is treatable. It often happens alongside low calcium and potassium levels, which are also electrolytes.
Low magnesium may not show any signs, but symptoms include fatigue and weakness. Left unchecked, it can cause abnormal heart rhythms and seizures.
Clinical symptoms vary depending on the degree and duration of the magnesium disorder. Additionally, although direct causality is unknown, diseases, such as diabetes mellitus, Parkinson disease, and other neurologic conditions, are associated with low magnesium levels. 2, 3
In addition to inherited disorders of magnesium handling, hypomagnesemia is also seen with excessive gastrointestinal or renal losses and due to medications such as amphotericin B, aminoglycosides, and cisplatin.
However, if you ingest high doses of any magnesium supplement, you might experience side effects, such as diarrhea, gastrointestinal irritation, nausea, vomiting and worse. If too much magnesium builds up in your body, as can happen if you have kidney disease, you can have serious side effects.