This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
DOC for belladona poisoning 
Select and explain. 
A. Neostigmine, B. Physostigmine, C. Pyridostigmine, D. Edrophonium
B: Physostigmine
Answer: B: Physostigmine 
Explanation: Physostigmine is an anticholinesterase & chemically it is a tertiary amine which can cross BBB.
It is DOC for Belladona, Datura & Atropine poisoning.