Magnesium L-Threonate MagteinSports Research Magnesium L Threonate uses Magtein a patented magnesium l threonate form developed at MIT specifically for its ability to cross the blood brain barrier. Unlike other magnesium forms absorbed into peripheral tissues, magnesium l threonate has been shown in research to increase brain magnesium levels directly supporting synaptic density, neuroplasticity, memory, and executive function. Each serving delivers 2,000mg of Magtein
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