Hydroxyzine Oral Suspension Dosage Guide: Effectively Managing Anxiety

In the realm of healthcare, precise medication administration is crucial for effectively managing patients’ health conditions and promoting their well-being. Medications like hydroxyzine, known as Vistaril, play a significant role in treating anxiety and other related conditions. Accurate calculation and administration of hydroxyzine oral suspension are essential to ensure that patients receive the correct dosage for anxiety management. In this article, we will delve into the process of determining and administering hydroxyzine oral suspension as per a healthcare provider’s prescription. This prescription specifies a dosage of 10 mg to be taken every 4 hours (q 4 hr) as needed (prn) for anxiety. Specific directions for mixing are provided to achieve the desired concentration. By understanding the prescribed dose and the preparation process, healthcare professionals can ensure that patients receive the right amount of hydroxyzine to effectively manage their anxiety.

Understanding Hydroxyzine Oral Suspension

Hydroxyzine, marketed under the brand name Vistaril, is commonly used in healthcare to manage anxiety, tension, and other related conditions. It is an antihistamine with sedative properties, making it effective for alleviating anxiety symptoms.

Interpreting Healthcare Provider Prescriptions

Healthcare providers play a critical role in prescribing medications, specifying the required dosage, and offering administration instructions. In this scenario, the healthcare provider has provided the following prescription:

  • Medication: Hydroxyzine (Vistaril) Oral Suspension
  • Dosage: 10 mg
  • Administration Frequency: Every 4 hours (q 4 hr) as needed (prn)
  • Preparation Instructions: Mix with 125 mL of water, and each teaspoon (tsp) will yield 15 mg of Vistaril.

Determining the Oral Suspension Dosage

To calculate the dosage of hydroxyzine oral suspension to be administered, healthcare professionals must consider the prescribed dose, the frequency of administration, and the available concentration. In this scenario, the provided concentration is that each teaspoon (tsp) of the suspension contains 15 mg of hydroxyzine.

  1. Calculate the total daily dose required for the patient based on the prescribed dose (10 mg) and the recommended frequency (every 4 hours). This will yield the total daily dose in milligrams (mg).

    Total Daily Dose (mg) = Prescribed Dose (mg) × Number of Administrations per Day

    Total Daily Dose (mg) = 10 mg × (24 hours / 4 hours) = 60 mg/day

  2. Determine the total volume of hydroxyzine oral suspension required to deliver the total daily dose. To do this, divide the total daily dose by the concentration of hydroxyzine (15 mg/tsp). This will yield the total volume in teaspoons (tsp).

    Total Volume (tsp) = Total Daily Dose (mg) / Concentration (mg/tsp)

    Total Volume (tsp) = 60 mg / 15 mg/tsp = 4 tsp/day

  3. Convert the total volume (4 tsp) to milliliters (mL). One teaspoon (tsp) is approximately equal to 5 mL.

    Total Volume (mL) = Total Volume (tsp) × Volume of One Teaspoon (mL/tsp)

    Total Volume (mL) = 4 tsp × 5 mL/tsp = 20 mL/day

Administering Hydroxyzine Oral Suspension

When administering hydroxyzine oral suspension to a patient for anxiety management, healthcare professionals should adhere to these general steps:

  1. Ensure that you have the prescribed oral suspension, a clean medicine cup or spoon, and clean gloves.
  2. Shake the oral suspension well to ensure proper mixing of the medication.
  3. Measure the required dose accurately using a medicine cup or spoon.
  4. Administer the medication directly into the patient’s mouth, if possible, to ensure they receive the full dose.
  5. Offer a small amount of water to the patient to help with swallowing.
  6. Discard any unused or expired medication according to local regulations and guidelines.

Dosing Precision and Medication Safety

Achieving the precise dosage of hydroxyzine oral suspension is essential for effectively managing anxiety while minimizing the risk of side effects. Healthcare professionals must follow the provided prescription and preparation instructions accurately, as demonstrated in this scenario.


Accurately calculating and administering hydroxyzine oral suspension is essential for effectively managing anxiety and promoting the well-being of patients. By adhering to healthcare provider prescriptions and considering factors such as prescribed dose and medication concentration, healthcare professionals can ensure that patients receive the correct dosage for anxiety management, ultimately contributing to their health and quality of life.


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