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Serotonin

Serotonin or 5-hydroxytryptamine (5-ht) is a monoamine neurotransmitter. biochemically derived from tryptophan, serotonin is primarily found in the gastrointestinal (gi) tract, platelets, and in the central nervous system (cns) of animals including humans. it is popularly thought to be a contributor to feelings of well-being and happiness.