Used as an antidote in organophosphate poisoning, such as from insecticides or nerve agents. Reactivates acetylcholinesterase enzyme inhibited by organophosphates, helping restore normal nerve function. Most effective when administered early, especially within minutes to hours after exposure. Often used alongside atropine to manage symptoms like excessive salivation, muscle weakness, and respiratory distress. Commonly given in emergency settings, including hospitals and by first responders in cases of pesticide poisoning or chemical warfare exposure.