<prompt> Atropine causes all except: March 2012BronchoconstrictionTachycardiaDry mouthMydriasis  <response>: Ans: A i.e. Bronchoconstriction Effects of atropine Atropine causes bronchodilatation and reduced airway resistance, especially in COPD and asthma patients The most prominent effect of atropine is to cause tachycardia Atropine markedly decreases sweat, salivary dry mouth, tracheobronchial and lacrimal secretion M3 blockade Topical instillation of atropine causes mydriasis, abolition of light reflex and cycloplegia lasting 7-10 days 