<prompt> Wich one of the following drugs does not produce central anticholinergic syndromeAtropine sulphateGlycopyrrolateAntihistaminicsTricyclic antidepressants  <response>: Ref: KD Tripathi pharmacology 7th edition page.no: 111 Glycopyrrolate is a potent and rapidly acting antimuscarinic, lacking central effects. It is having a quaternary structure. so it doesnt cause the central anticholinergic syndrome. Atropine has both central and peripheral action. Tricyclic antidepressants, Antihistaminics have central anticholinergic effects 