Hydroxyzine reduces activity in the central nervous system. It also acts as an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of itching or hives on the skin. It is used as a sedative to treat anxiety and tension. It is also used together with other medications given during and after general anesthesia, and used to treat allergic skin reactions such as hives or contact dermatitis.
What is the dosage for Hydroxyzine?
- Hydroxyzine has its maximal effect about 30 to 60 minutes after it is taken. Its effects last for 4 to 6 hours.
- The recommended dose for treating itching (pruritus) is 25 mg given 3 or 4 times daily by mouth or by intramuscular injection.
- When used for sedation, the recommended dose is 50 to 100 mg orally or 25 to 100 mg by intramuscular injection.
- Anxiety and tension are managed with 50 to 100 mg in 4 divided doses or 50-100 mg intramuscular injection in 4 or 6 divided doses.
- Alcohol withdrawal is treated with a 50-100 mg injection and may be repeated every 4 to 6 hours as needed.
- The dose for nausea and vomiting is 25 to 100 mg by injection.