Which of the following properties make pyridostigmine different from neostigmine ?: (A) It is more potent, (B) It is longer acting, (C) It produces less muscarinic side effects, (D) It does not have any direct action on NM receptors
Answer is B. Though less potent than Neostigmine, Pyridostigmine has longer duration of action (3 to 6 hrs)
Duration of action of neostigmine is 0.5 to 2 hrs.