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The researchers examined the medical records from 22 people who had been seen at an epilepsy clinic between 2005 and 2011 who had not responded to regular medical treatment. They had then been treated with magnesium and followed for at least three months. Most were instructed to take 420 mg of magnesium oxide, providing 252 mg of elemental magnesium, twice daily, but a few people were instructed to take the same amount once daily and a few to take it three to four times daily.
After being on magnesium for 3 to 6 months, the number of days with seizures per month had decreased by 50% or more in 9 of the 22 people, had decreased by 75% or more in 7, and had decreased to 0 in 2 people. All of the responders were taking magnesium once to twice per day.
“Our patient population represents seizure patients who are the most difficult to treat medically,” the study’s authors said. “Nevertheless, magnesium supplementation was able to significantly decrease the amount of seizure days per month, with two patients reportedly becoming seizure-free.” They emphasized the importance of further research using a control (placebo) group, and suggested that better results might be seen with the use of a more absorbable form of magnesium such as magnesium acetate, magnesium lactate, or magnesium gluconate. When magnesium is poorly absorbed, it acts as a laxative and can cause diarrhea.
Although these findings don’t tell us for sure whether magnesium can help people with epilepsy, magnesium is safe for most people and has other benefits, such as controlling blood pressure and regulating the heart rhythm. Here are some other things that may help control seizures in people with epilepsy:
(Can J Neurol Sci 2012;39:323–7)