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Side Effects of Magnesium Pills

by
author image Rae Uddin
Rae Uddin has worked as a freelance writer and editor since 2004. She specializes in scientific journalism and medical and technical writing. Her work has appeared in various online publications. Uddin earned her Master of Science in integrated biomedical sciences with an emphasis in molecular and cellular biochemistry from the University of Kentucky College of Medicine.
Side Effects of Magnesium Pills
Because of the potential for interactions with other medications, you should only take supplements under a doctor's supervision. Photo Credit post424/iStock/Getty Images

Overview

Magnesium pills are a type of nutritional supplement used to increase magnesium levels in people who do not have enough of this substance in their bodies. Foods rich in magnesium include nuts, whole grains, tofu and green leafy vegetables. While most people do not get as much magnesium as they should from their diets, a magnesium deficiency is rare, according to the University of Maryland Medical Center website. However, those with medical conditions such as irritable bowel syndrome and ulcerative colitis, diabetes, pancreatitis and hyperthyroidism can develop a deficiency. An intestinal virus can cause a temporary deficiency. Symptoms of a magnesium deficiency include anxiety, sleep disorders, irritability, restless leg syndrome, nausea, vomiting, abnormal heart rhythms and low blood pressure. Check with your healthcare provider before taking magnesium supplements.

Diarrhea

While taking magnesium pills, you may develop diarrhea, the Office of Dietary Supplements reports. Frequent bowel movement urges may be uncomfortable and may occur in conjunction with nausea, vomiting or abdominal gas, pain or cramping. If you notice blood in your stools, which may cause your stools to appear unusually black or tar-like, seek prompt medical care. Bloody stools may indicate a severe reaction to magnesium pills.

Abnormal Reflexes

Treatment with this nutritional supplement may cause you to develop abnormally slow reflexes, Drugs.com warns. Loss of normal reflexes may also be accompanied by muscle weakness or difficulty moving about normally. Such side effects are serious and require prompt attention from a medical provider.

Overdose Symptoms

Ingesting unusually high doses of magnesium may cause you to develop symptoms of overdose. Overdose complications are more common in people who have poor kidney function due to kidney damage or disease. Magnesium overdose symptoms include severe drowsiness, difficulty breathing, diminished heart rate, stomach upset, weakness, dizziness, loss of consciousness, blurred vision or coma. If you suspect that you or a loved one has overdosed on magnesium pills, seek immediate emergency medical care.

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