Any process that stops, prevents or reduces the frequency, rate or extent of serotonin biosynthetic process.
Synonyms:
exact_synonym:
down regulation of serotonin anabolism; down regulation of serotonin biosynthesis; down regulation of serotonin biosynthetic process; down regulation of serotonin formation; down regulation of serotonin synthesis; downregulation of serotonin anabolism; downregulation of serotonin biosynthesis; downregulation of serotonin biosynthetic process; downregulation of serotonin formation; downregulation of serotonin synthesis; negative regulation of serotonin anabolism; negative regulation of serotonin biosynthesis; negative regulation of serotonin formation; negative regulation of serotonin synthesis
narrow_synonym:
inhibition of serotonin anabolism; inhibition of serotonin biosynthesis; inhibition of serotonin biosynthetic process; inhibition of serotonin formation; inhibition of serotonin synthesis