because many antidepressants , including trazodone and amitriptyline , the neuroleptic , chlorpromazine , and the mood stabilizer , lithium , may all , under some circumstances , inhibit serotonin reuptake mechanisms and may simultaneously block serotonin receptor sites , their effects on appetite and weight gain may represent a balance between serotonergic and antiserotonin activities .
C0003289
antidepressants
C2917435
mood stabilizer