Doctor’s Best Brain Magnesium supports memory learning, mood and other aspects of cognitive health. Magnesium is essential for brain connections that facilitate learning, memory, attention, and all other brain functions. Magnesium is essential for brain connections that facilitate learning, memory, attention, and other brain functions. Magnesium is a cofactor for numerous enzymes that control nerve cell functions and synapse integrity. Synapses are the points where nerve cells make close contact with each other via their cell membranes to exchange information. The movements of ions such as magnesium across the nerve cell membranes can change as we age, adversely affecting cellular excitability, chemical transmitter release, and synaptic plasticity (synapse adaptability). Supplementing with Doctor’s Best Brain Magnesium can help as it provides magnesium-L-threonate from Magtein™ which is a unique and highly bioavailable magnesium capable of crossing the blood-brain barrier.