How to Calculate Cloxacillin 250 mg/5 mL (suspension) Dose

This calculator determines the Cloxacillin dose for treating bacterial infections, using a concentration of Cloxacillin 250 mg/5 mL (50 mg/mL), based on the patient’s weight and dosage regimen:

Dose in mg and Volume in mL (based on Cloxacillin component):

Volume Calculation:

Where:

• Weight: Patient’s weight in kilograms or pounds (minimum ~5 kg for pediatric >1 month, automatically converted to kg).
• Dosage Regimen: Select 50 to 100 mg/kg/day QID.
• Concentration: Cloxacillin 50 mg/mL (250 mg/5 mL).

For adults, the usual dose is 250 to 500 mg po every 6 hours. Administer for 7–14 days, or as directed. ⚠️ Always consult a healthcare provider.

Using the Cloxacillin 250 mg/5 mL (suspension) Dosage Calculator

Enter the patient’s weight, select the weight unit (kg or lb), and choose the dosage regimen (50–100 mg/kg/day QID). The calculator provides the dose in mL and mg per dose for pediatric patients (>1 month) or adults.

Example: Weight 11.223 kg, 50 to 100 mg/kg/day QID:

Pediatric >1 month:
Min Dose: 2.8 mL (140 mg) po every 6 hours
Max Dose: 5.6 mL (281 mg) po every 6 hours

Adults:
Usual dose is 250 to 500 mg po every 6 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 Cloxacillin used for?

Cloxacillin (Cloxapen) treats bacterial infections, including skin infections, respiratory infections, and ear infections.

2. How often is this given?

Pediatric (>1 month): Four times daily (QID), 50 to 100 mg/kg/day. Adults: Every 6 hours, 250 to 500 mg po.

3. Can this be used for infants under 1 month?

Consult a doctor, as Cloxacillin is not typically recommended for infants under 1 month without medical supervision.

4. What if weight is in pounds?

Enter the weight in pounds, and the calculator will automatically convert it to kilograms for calculation (1 lb = 0.4536 kg approximately).

5. What’s the adult dose?

Usual dose is 250 to 500 mg po every 6 hours.