Magnesium L-Threonate Supplements for Brain Health†
Orders received by noon typically ship same business day. Orders received by noon typically ship same business day.

    Cognitive Health

    Support memory, focus, and brain performance† with Cooper Complete Cognitive Health supplements featuring Magtein® magnesium L-threonate.

    Best Seller
    Bottle of Cooper Complete Cognitive Health Magnesium L-Threonate dietary supplement.

    Cognitive Health Magnesium L-Threonate 2 g

    Premium Magnesium L-Threonate supplement helps support brain health, including memory, focus, and cognitive clarity. Formulated for adults seeking to maintain cognitive performance as they age, it promotes overall brain function and resilience.†

    $59.98 Add to cart
    Sale!
    Bottle of Cooper Complete Cognitive Health Magnesium L-Threonate Powder Supplement 1 g Hint of Berry Flavor

    Cognitive Health Magnesium L-Threonate Powder 1 g

    A delicious blended mixed berry magnesium L-threonate powder designed to support focus, memory, mood, and sleep†—featuring a unique blend of three highly absorbable forms of magnesium.

    Save 50% on this short-dated item—best by January 31, 2026.

    $29.49 Add to cart

Find the right supplements, personalized just for you

Live better. Live longer. Take the Cooper Complete vitamin quiz today.

Take the Quiz