Amoxicillin Pediatric Dosage
12kg toddler with first episode of acute otitis media, no prior antibiotics
Did our AI summary help? Let us know.
Evidence-based calculations Used in clinical settings worldwide Regular monitoring recommended
Ready to run the numbers?
Why: This calculation helps assess important health parameters for clinical and personal wellness tracking.
How: Enter your values above and the calculator will apply validated formulas to compute your results.
Run the calculator when you are ready.
👶 2-Year-Old with Ear Infection
12kg toddler with first episode of acute otitis media, no prior antibiotics
Click to load
🍼 6-Month Infant with AOM
8kg infant with bilateral acute otitis media, daycare exposure
Click to load
🤒 8-Year-Old with Strep Throat
25kg school-age child with positive rapid strep test
Click to load
🫁 4-Year-Old with Pneumonia
16kg preschooler with community-acquired pneumonia requiring outpatient treatment
Click to load
🩹 10-Year-Old with Skin Infection
35kg child with impetigo, transitioning to capsules
Click to load
Sample Examples
👶 2-Year-Old with Ear Infection
12kg toddler with first episode of acute otitis media, no prior antibiotics
Click to use this example
🍼 6-Month Infant with AOM
8kg infant with bilateral acute otitis media, daycare exposure
Click to use this example
🤒 8-Year-Old with Strep Throat
25kg school-age child with positive rapid strep test
Click to use this example
🫁 4-Year-Old with Pneumonia
16kg preschooler with community-acquired pneumonia requiring outpatient treatment
Click to use this example
🩹 10-Year-Old with Skin Infection
35kg child with impetigo, transitioning to capsules
Click to use this example
Enter Patient Information
Patient Information
Clinical Information
Medication
Safety Factors
Medical Disclaimer
This calculator is intended for educational and reference purposes only. It should not replace clinical judgment or professional medical advice. Always verify calculations with a pharmacist or healthcare provider before administering medications to pediatric patients. Dosing recommendations are based on published guidelines and may need adjustment based on individual patient factors.
For informational purposes only — not medical advice. Consult a healthcare professional before acting on results.
🏥 Health Facts
— WHO
— CDC
What is Amoxicillin Pediatric Dosing?
Amoxicillin is one of the most commonly prescribed antibiotics for children. It belongs to the penicillin family and is effective against many common bacterial infections. Proper dosing is critical in pediatrics because children metabolize medications differently than adults, and doses must be carefully calculated based on weight.
Why Weight-Based Dosing?
- •Children's bodies process drugs differently than adults
- •Fixed doses can lead to under- or overdosing
- •Ensures therapeutic drug levels are achieved
- •Minimizes risk of adverse effects
Common Indications
- •Acute otitis media (ear infections)
- •Streptococcal pharyngitis (strep throat)
- •Community-acquired pneumonia
- •Urinary tract infections
- •Skin and soft tissue infections
How to Use This Calculator
This calculator provides evidence-based dosing recommendations following AAP (American Academy of Pediatrics) and IDSA (Infectious Diseases Society of America) guidelines. Here's how to get accurate results:
Step-by-Step Guide
- 1Enter Patient Weight
Use current measured weight in kg or lbs. This is the most critical input.
- 2Enter Patient Age
Age helps determine appropriate dosing intervals and duration.
- 3Select Indication
Different infections require different dosing regimens.
- 4Review Safety Factors
Check allergies, renal function, and other clinical factors.
- 5Choose Formulation
Select available suspension strength or solid dosage form.
When to Use High-Dose vs Standard-Dose
Understanding when to use high-dose amoxicillin is crucial for treatment success. The calculator automatically selects the appropriate regimen based on your inputs.
Standard Dose (25-50 mg/kg/day)
First-line treatment for uncomplicated infections in children without risk factors.
Appropriate When:
- First episode of infection
- No recent antibiotic use
- Low resistance risk area
High Dose (80-90 mg/kg/day)
Reserved for resistant organisms or treatment failures.
Required When:
- Antibiotic use within 30 days
- Daycare attendance
- Treatment failure
- Severe infection
Avoid Amoxicillin
These situations require alternative antibiotics.
Contraindications:
- Penicillin allergy
- Severe anaphylaxis history
- Infectious mononucleosis
Amoxicillin Dosing Formulas
The following formulas are used to calculate accurate pediatric amoxicillin doses:
Core Calculation Formulas
Daily Dose Calculation
Example: 12 kg child x 45 mg/kg/day = 540 mg/day
Single Dose Calculation
Example: 540 mg/day ÷ 2 (BID) = 270 mg per dose
Volume Calculation (Suspension)
Example: (270 mg ÷ 250 mg) x 5 mL = 5.4 mL per dose
Renal Dose Adjustment
CrCl <10: Give 50% dose q24h
Adjust dosing interval, not individual dose amount
Related Calculators
Ibuprofen Dosage Calculator
Calculate safe ibuprofen doses for children and infants. Weight-based dosing for fever, pain, and inflammation with age-appropriate maximum limits and safety...
HealthInfant Tylenol Dosage Calculator
Calculate safe acetaminophen (Tylenol) doses for infants. Weight-based dosing with age-appropriate limits, daily dose tracking, and safety alerts for fever...
HealthParacetamol Dosage Calculator
Calculate paracetamol (acetaminophen) doses for children via oral, rectal, or IV routes. Includes hepatotoxicity risk assessment, loading doses, and...
HealthPediatric Dose Calculator
Calculate weight-based medication doses for children. Includes common pediatric drugs with preset dosing, safety limits, and volume calculations for various...
HealthA-a Gradient Calculator
Calculate the Alveolar-arterial (A-a) oxygen gradient to assess oxygenation efficiency. Helps differentiate between pulmonary and extrapulmonary causes of...
HealthAdvanced ABI Calculator (Ankle-Brachial Index)
Comprehensive Ankle-Brachial Index calculator with multiple measurement methods, advanced PAD risk assessment, exercise testing capability, cardiovascular...
Health