Used to treat symptoms of organophosphate poisoning, such as nerve agents or insecticide exposure, and certain mushroom poisonings affecting the autonomic nervous system, by blocking excess acetylcholine activity. Commonly administered in emergency settings to counteract bradycardia (slow heart rate) and improve cardiac output. Employed in ophthalmology to dilate pupils during eye examinations and to reduce eye inflammation in conditions like uveitis. Also used to reduce salivation and bronchial secretions before surgery, and to prevent nausea and vomiting from motion sickness. Helps manage certain types of poisoning and drug overdoses involving cholinergic agents.