How to Calculate Clarithromycin 125 mg/5 mL (suspension) Dose

This calculator determines the Clarithromycin dose for treating bacterial infections, using a concentration of Clarithromycin 125 mg/5 mL (25 mg/mL), based on the patient’s weight and dosage regimen:

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

Volume Calculation:

Where:

• Weight: Patient’s weight in kilograms or pounds (minimum ~5 kg for pediatric ≥ 6 months, automatically converted to kg).
• Dosage Regimen: Select 15 mg/kg/day BID (Max 1 g/day).
• Concentration: Clarithromycin 25 mg/mL (125 mg/5 mL).

For adults, the usual dose is 250 to 500 mg po BID (Max 1 g/day). Administer for 7–14 days, or as directed. ⚠️ Always consult a healthcare provider.

Using the Clarithromycin 125 mg/5 mL (suspension) Dosage Calculator

Enter the patient’s weight, select the weight unit (kg or lb), and choose the dosage regimen (15 mg/kg/day BID). The calculator provides the dose in mL and mg per dose for pediatric patients (≥ 6 months) or adults.

Example: Weight 25 kg, 15 mg/kg/day BID:

Pediatric ≥ 6 months:
7.5 mL (188 mg) po BID

Usual adult dose:
250 to 500 mg po BID (Max: 1 g/day)

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

Consult a healthcare provider before administering.

Frequently Asked Questions (FAQ)

1. What is Clarithromycin used for?

Clarithromycin (Biaxin; Klacid) treats bacterial infections, including respiratory infections, skin infections, and ear infections.

2. How often is this given?

Pediatric: Twice daily (BID), 15 mg/kg/day (Max 1 g/day). Adults: Twice daily, 250 to 500 mg po BID (Max 1 g/day).

3. Can this be used for infants under 6 months?

Consult a doctor, as Clarithromycin (Biaxin; Klacid) is not typically recommended for infants under 6 months 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 BID (Max 1 g/day).