NCIt definition : The hydrochloride salt form of protriptyline, a tricyclic secondary amine with antidepressant
property. Protriptyline hydrochloride blocks the re-uptake of norepinephrine and serotonin
by nerve terminals, thereby increasing available norepinephrine and serotonin. Protriptyline
does not block dopamine transport but may have an indirect dopamine-facilitating effect
through interactions of increased peri-synaptic abundance of norepinephrine, particularly
in the cerebral cortex, where adrenergic terminals exceed dopaminergic terminals.
This results in elevation of mood and behavioral activity. In addition, this agent
exhibits anticholinergic activity.;