Taylor MD SerenCalm 90 Capsules is a blend of ingredients to support the brain, relaxation, calmness and stamina while addressing the effects of stress. Containing choline, derived from soy, which is a precursor for the neurotransmitter acetylcholine. Acetylcholine is part of the nervous system's parasympathetic response, which controls our ability to rest and digest. The adaptogens included target cortisol and symptoms. L-theanine is part of the formula and the major health component found in green tea.