a vagal tone monitor ( vtm ) was used to evaluate cardiac rhythm changes in rhesus monkeys ( macaca mulatta ) after intramuscular ( i.m . ) administration of an anti-cholinergic ( atropine sulfate ) , two carbamates ( pyridostigmine bromide and physostigmine salicylate ) , and combinations of pyridostigmine and atropine .
C0034262
pyridostigmine bromide
C0034261
pyridostigmine