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

This calculator determines the amoxicillin dose for treating bacterial infections, using a concentration of 125 mg / 5 mL (25 mg/mL), based on the patient’s weight, infection severity, and dosing frequency:

Dose in mg and Volume in mL:

Volume Calculation:

Where:

• Weight: Patient’s weight in kg or lb (converted to kg, minimum 1 kg).
• Infection Severity: Mild to moderate or severe.
• Dosing Frequency: BID (twice daily) or TID (three times daily).
• Concentration: 25 mg/mL (125 mg / 5 mL).

For adults (weight ≥ 40 kg), use 250–1000 mg PO TID. Administer for 7–10 days, or as directed. ⚠️ Always consult a healthcare provider.

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

Enter the patient’s weight, select the infection severity (mild/moderate or severe), and choose the dosing frequency (BID or TID). The calculator provides the dose range in mL and mg per dose for pediatric patients (> 1 month) or adults.

Example: Weight 100 kg, Mild to Moderate Infection, TID:

Pediatric > 1 month:
Min Dose: 33.3 mL (833 mg) PO TID
Max Dose: 53.3 mL (1333 mg) PO TID

Adults:
Usual dose is 250 to 1000 mg PO TID

⚠️ This tool is for information purposes only...
            

Consult a healthcare provider before administering.

Frequently Asked Questions (FAQ)

1. What is amoxicillin used for?

Amoxicillin treats bacterial infections such as ear infections, sinusitis, pneumonia, and urinary tract infections.

2. How often can amoxicillin be given?

Dosing is BID or TID, based on severity, for 7–10 days or as prescribed.

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

Consult a doctor, as dosing for infants under 1 month may differ (e.g., caution or lower doses).

4. What if weight is in pounds?

Select 'lb,' and the calculator converts to kg automatically.

5. What’s the maximum daily dose for adults?

Up to 4,000 mg/day, but typically 250–1000 mg PO TID.