Three cases developed withdrawal symptoms of trazodone despite gradual
discontinuation of therapeutic doses of the drug. This report suggest
s that effects of trazodone and its metabolite m-chlorophenylpiperazin
e on the serotonergic system, which may result in noradrenergic reboun
d after discontinuation, and short half-lives of these compounds are i
nvolved in the development of these symptoms. From a clinical point of
view, we suggest that trazodone should be tapered off at a very slow
rate.