Jarrow Magmind Magtein leads for brain-focused users because it contains Magnesium L-Threonate (Magtein®) to support brain health, function, and memory with a clear 3-capsule daily protocol. Thorne Magnesium Bisglycinate trails in cognitive specificity but offers broader general magnesium benefits at potentially lower cost. The gap is clearest in primary benefit where Jarrow's patented form dir...