Monoamine refers to non-acidic neurotransmitter containing an amine group (NH2), formed by a metabolic change of certain amino acids. Moreover, Monoamineit is a class of chemicals characterized by a single amine group; includes the neurotransmitters norepinephrine , dopamine, and serotonin. Likewise, Monoamines are neurotransmitters, including catecholamines (epinephrine, norepinephrine, and dopamine) and serotonin, that have been implicated in the mood disorders