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
In oral poisoning with carbamate insecticides, .............................. may be hazardous: 
Select and explain. 
A. Pralidoxime, B. Atropine, C. Magnesium sulfate purgative, D. Gastric lavage with activated charcoal
A: Pralidoxime
Answer: A: Pralidoxime 
Explanation: Oximes are ineffective in carbamate poisoning. Rather, these can worsen the poisoning due to weak anticholinesterase activity of its own.