The Focus Stack includes 2 bottles of 15ct NEUROFUEL™ NOOTROPIC and 2 bottles of 15ct DOPAMINE BRAIN FOOD™ NEUROFUEL™ is the original CILTEP® formula for enhanced focus, deep concentration and improved memory. The premium natural ingredients work as fuel for your neurotransmitters, supporting greater signaling between brain cells. DOPAMINE BRAIN FOOD™ is designed to support the body's natural production of dopamine, a neurotransmitter essential to the central nervous system.