Calm DayThis formula is designed to support the neurotransmitters dopamine and serotonin, with the potential to promote restful sleep.* Neurotransmitters are natural messengers in the nervous system that send signals from one nerve cell across a synapse to another nerve cell or target organ. Serotonin plays a role in sleep, mood, intestinal function and inflammation. Dopamine plays a role in cognitive function, memory, learning, and pleasure. In our bodies,