<prompt> A person taking tricyclic antidepressants presents with blurred vision and dry mouth. These adverse effects results due to blockade of:M3 muscarinic receptorsGABA receptorH1 histamine receptors5HT2 receptors  <response>: Anticholinergic adverse effects of TCAs include dry mouth, constipation, blurring of vision, urinary retention, etc. REF:KD TRIPATHI 8TH ED. 