Acetylcholine is a neurotransmitter found throughout the peripheral and central nervous systems and is well known for its importance in muscle contraction, attention, learning, memory, and stress.* Acetylcholine released by the vagus nerve is essential to immune health due to its ability to downregulate cytokine expression in the spleen, liver, and gastrointestinal tract.* Key ingredients Acetyl-L-carnitine: Derivative of L-carnitine shown to increase plasma and brain levels of L-carnitine. L-carnitine facilitates energy production in mitochondria and provides antioxidant protection through its ability to scavenge reactive oxygen species and metal ions.* Provides an acetyl group required for acetylcholine synthesis.* Choline bitartrate: Choline donor and precursor to acetylcholine. Choline is an essential nutrient important for cell health, methylation and lipid metabolism.* AlphaSize® (Alpha-glycerylphosphorylcholine): Patented choline donor and precursor to acetylcholine. Huperzia serrata aerial parts (standardized to 1% to huperzine A): Potent and selective inhibitor of acetylcholinesterase (AChE), an enzyme that breaks down acetylcholine in the synapse.* *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.