The maximum single dose of hydroxyzine varies depending on the administration route and the patient's age and condition.
How Much Hydroxyzine Can Be Given at Once?
For adults, the recommended maximum single dose of oral hydroxyzine is 25 mg for anxiety and 100 mg for urticaria or pruritus [1]. For intramuscular administration in adults, the maximum single dose is 100 mg [1]. For pediatric patients, the maximum single oral dose is 2 mg/kg, not to exceed the adult dose [1]. For intramuscular use in children, the maximum single dose is 1 mg/kg [1].
What is the Recommended Daily Dose of Hydroxyzine?
The usual daily dose for adults for anxiety is 25 to 100 mg, divided into four doses [1]. For urticaria or pruritus, the usual daily dose for adults is 25 to 100 mg, divided into four doses [1]. For pediatric patients, the usual daily dose is 2 mg/kg divided into four doses [1].
What are the Risks of Exceeding the Maximum Hydroxyzine Dose?
Exceeding the recommended dose of hydroxyzine can lead to increased side effects, including significant drowsiness, anticholinergic effects like dry mouth and blurred vision, and potentially more serious central nervous system effects [1].
When Does Hydroxyzine Patent Expiry Occur?
Hydroxyzine is an older medication with patents that have long since expired. As such, it is available as a generic drug [2]. Information on specific patent expiry dates for older drugs like hydroxyzine is not typically tracked by specialized patent watch services in the same way as newer, branded pharmaceuticals [3].
Where Can I Find More Information on Hydroxyzine Dosing?
Detailed dosing information, including specific recommendations for different age groups and conditions, can be found in the prescribing information provided by the drug manufacturer and on reputable medical information websites [1].
Sources:
[1] https://www.drugpatentwatch.com/prescribing-information/hydroxyzine
[2] https://www.drugpatentwatch.com/drugs/hydroxyzine
[3] https://www.drugpatentwatch.com/