The treatment of a patient of suspected OPC Poisoning is initiated even before his/her admission to casualty in terms of decontamination by washing the contact body surface, removal of clothes and at arrival to casualty with suspicion of OP poisoning, history, examination, and specific treatment with investigations are carried out concurrently to reduce morbidity and mortality associated with OP poisoning. Ethical clearance was taken from the institutional ethical committee. Written informed consent was taken from all subjects and their attenders. In our study, total 7% patients went for intermediate syndrome, in that 5% patients were in mild group, 2% patients in moderate group. Compounds which led to IMS are Malathion-3%, Dimethoate2%, Parathion-2%, Dichlorovas-1%.