Yes, amitriptyline, an oral tricyclic antidepressant, has been reported to cause high blood pressure (hypertension), but how often this occurs was not reported. Other heart side effects, like fast heart beat, orthostatic hypotension (low blood pressure upon standing), fainting, heart rhythm changes and heart attack have also been reported. Some side effects, like orthostatic hypotension and heart rhythm changes, are common to the tricyclic antidepressant class.