<prompt> All of the following are predictable adverse effects of tricyclic antidepressants, EXCEPT:Decrease in seizure thresholdWeight gainInsomniaDry mouth  <response>: Tricyclic antidepressants produce sedation rather than arousal. Use of tricyclics can be therapeutic for insomnias associated with depression. Other effects include antimuscarinic effects dry mouth, blurred vision, tachycardia, urinary retention, a-adrenergic effects ohostatic hypotension, weight gain, and a decrease in seizure threshold, which means that patients are more susceptible to having seizures. Ref: ODonnell J.M., Shelton R.C. 2011. Chapter 15. Drug Therapy of Depression and Anxiety Disorders. In L.L. Brunton, B.A. Chabner, B.C. Knollmann Eds,Goodman Gilmans The Pharmacological Basis of Therapeutics, 12e. 