What will counteract an overdose of hydroxyzine?

There is no specific antidote for a hydroxyzine overdose. Management typically involves supportive care, including monitoring vital signs and providing symptomatic treatment, such as intravenous fluids, respiratory support, or medications to manage severe symptoms like agitation or seizures. In severe cases, activated charcoal may be administered if the patient presents shortly after ingestion. Always seek immediate medical attention in case of an overdose.