Pharmacology Autonomic nervous system c44d6c44 Which of the following drugs cannot cross the blood placental barrier A Atropine B Glycopyrolate C Physostigmine D Hyoscine hydro bromide High-Yield Explanation Refer kDT 7/e p116 Glycopyrrolate is a quaternary ammonium compound and is this water soluble and unable to penetrate blood brain barrier