• L-tyrosine is a precursor to the catecholamines dopamine, norepinephrine, and epinephrine*1
• L-histidine is a histamine precursor*2
• Histamine supports wakefulness*2
• Catecholamines and Rhodiola rosea support wakefulness, cognitive function, mood, and healthy responses to stress*3
• Methionine supports methylation pathways*4
