How to Calculate Vancomycin 25 mg / mL Dose

This calculator determines the Vancomycin dose for treating *Clostridium difficile*-associated diarrhea, using a concentration of Vancomycin 25 mg / mL, based on the patient’s weight:

Dose in mL and mg (based on Vancomycin):

Where:

• Weight: Enter the patient’s weight in kilograms (kg) or pounds (lb) and select the unit from the dropdown (automatically converted to kg).
• Concentration: Vancomycin 25 mg / mL.

Administer as prescribed for *C. difficile*-associated diarrhea. ⚠️ Always consult a healthcare provider.

Using the Vancomycin 25 mg / mL Dosage Calculator

Enter the patient’s weight in kilograms or pounds, select the unit, and click "Calculate." The calculator provides the dose in mL and mg for pediatric (>1 month) and adult patients, ensuring the dose does not exceed the maximum daily limit of 2000 mg.

Example: Weight 25 kg:

Pediatric >1 month:
10 mL (250 mg) PO QID

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

Consult a healthcare provider before administering.

Frequently Asked Questions (FAQ)

1. What is Vancomycin used for?

Vancomycin (Vancocin; Firvanq) is used to treat *Clostridium difficile*-associated diarrhea and other serious bacterial infections, particularly when other antibiotics are ineffective.

2. How often is this given?

Pediatric >1 month: 40 mg/kg/day PO QID (Max 2000 mg/day). Adults: 125 to 500 mg PO QID (Max 2000 mg/day).

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

Consult a doctor, as Vancomycin 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 maximum daily dose for adults?

The maximum daily dose for adults is 2000 mg (80 mL) PO QID.