<prompt> A patient was treated with amitriptyline for depression, developed urinary retention, constipation blurring of vision. The most likely cause is -Symptoms of depression persistingAnticholinergic side effectsDepression medicamentosaAny of above  <response>: Amitriptyline and other TCAs produce anticholinergic side effects which are manifested as dry mouth salivation blurred vision, urinary retention, constipation, decreased sweating. 