Phenylephrine 2.5 mg/5 mL Dosage Calculator

How to Calculate Phenylephrine 2.5 mg/5 mL Dose

This calculator determines the Phenylephrine dose for relieving nasal congestion, using a concentration of Phenylephrine 2.5 mg/5 mL, based on the patient’s age group:

Dose in mL and mg (based on Phenylephrine):

Age 4 to 5 years: 5 mL (2.5 mg) po every 4 hours (Max 6 doses/24 hours)

Age 6 to 11 years: 10 mL (5 mg) po every 4 hours (Max 6 doses/24 hours)

Age 12 years and adults: 20 mL (10 mg) po every 4 hours (Max 6 doses/24 hours)

Where:

Age Group: Select the patient’s age group from the dropdown.
Concentration: Phenylephrine 2.5 mg/5 mL (0.5 mg/mL).

Administer as prescribed for nasal congestion. ⚠️ Always consult a healthcare provider.

Using the Phenylephrine 2.5 mg/5 mL Dosage Calculator

Select the patient’s age group from the dropdown and click "Calculate." The calculator provides the dose in mL and mg (Phenylephrine) for the specified age group.

Example: Age 4 to 5 years:

Dosage for Age 4 to 5 years:
5 mL (2.5 mg) po every 4 hours. Do not use more than 6 times in 24 hours

Calculations must be re-checked and should not be used alone...

Consult a healthcare provider before administering.

Frequently Asked Questions (FAQ)

1. What is Phenylephrine used for?

Phenylephrine (Children’s Sudafed PE) is used to relieve nasal congestion due to colds, allergies, or sinusitis.

2. How often is this given?

5 mL (2.5 mg) to 20 mL (10 mg) po every 4 hours, depending on age group. Do not use more than 6 times in 24 hours.

3. Can this be used for children under 4 years?

Consult a doctor, as Phenylephrine is not typically recommended for children under 4 years without medical supervision.

4. What’s the maximum daily dose?

The maximum daily dose is 6 doses (30 mL for 4–5 years, 60 mL for 6–11 years, 120 mL for 12 years and adults) in 24 hours.