Hydroxyzine Dosage for Adult Nausea
Hydroxyzine is dosed for nausea and vomiting using parenteral administration. The usual adult dose is 25 to 100 mg IM as a single dose. [1]
Dose and Route
- 25 to 100 mg IM once is the usual adult regimen for nausea/vomiting. [1]
Oral vs Parenteral Dosing
- A standard oral dosing regimen for nausea/vomiting is not provided in the referenced dosing resource. [1]
Frequency and Titration
- The referenced regimen specifies IM once rather than scheduled repeat dosing for nausea/vomiting. [1]
- Dosage selection should be individualized based on clinical response. [1]
Key Safety Considerations
- Hydroxyzine use is contraindicated in patients with a prolonged QT interval. [1]
- Hydroxyzine can cause sedation, which may be clinically limiting. [1]
Practical Administration Notes
- When treatment is initiated by the IM route, subsequent dosing may transition to oral therapy when practical. [1]
Limitations of Evidence
- Hydroxyzine nausea/vomiting dosing guidance in the referenced source is symptom-directed and does not specify etiology-based dose adjustments. [1]