A Complete Parent’s Guide to Amoxicillin Dosage for Children

BEVERLY HILLS PEDIATRICS | Los Angeles, CA

By: Dr. Anita Sabeti

Understanding Amoxicillin Dosage for Your Child

When your child is unwell, getting them back to their healthy, happy self is your priority. If your pediatrician prescribes amoxicillin, a common antibiotic for bacterial infections, it can bring relief—but understanding the correct amoxycillin dosage for children can feel daunting. This guide simplifies the process for you.

Important Note: This blog post is for informational purposes only and should NOT replace your pediatrician’s or pharmacist’s instructions. Always follow their guidance precisely.

Why the Correct Dosage Matters

Giving your child the right amount of amoxicillin is crucial for:

  • Effectiveness: A precise dose targets the bacteria effectively. Underdosing may not fully eliminate bacteria, leading to prolonged illness or antibiotic resistance.
  • Safety: Too much medication increases the risk of side effects such as stomach upset, diarrhea, or allergic reactions.

Factors Influencing Dosage

Amoxicillin dosage for children varies based on:

  • Weight: Doses are often measured in mg per kg of body weight.
  • Type & Severity of Infection: Different infections require different doses.
  • Formulation: Amoxicillin comes in chewable tablets, liquid suspensions, and capsules, each with varying concentrations.

Understanding the Prescription

Before administering amoxicillin, review your child’s prescription carefully:

Prescription DetailsWhat to Check
Medication NameEnsure it says “Amoxicillin”
Strength of MedicationFor liquids: mg/mL, Tablets: mg per unit
DosageAmount per dose (e.g., 5 mL, 1 tablet)
FrequencyHow often to give (every 8 hours, twice daily)
Route of AdministrationUsually oral (by mouth)
DurationHow long to take the medication
Special InstructionsFood requirements or additional precautions

💡 Always clarify any doubts with your pediatrician or pharmacist!

Administering Amoxicillin Correctly

Liquid Formulation:

✅ Shake well before use for even distribution.
✅ Use the provided oral syringe—not kitchen spoons!
✅ Measure carefully to the exact prescribed mark.

Chewable Tablets:

✅ Ensure your child chews thoroughly before swallowing.
✅ Follow dosage instructions precisely.

Tablets & Capsules:

✅ Ensure your child can safely swallow them.
✅ Administer the prescribed number of tablets or capsules.


Amoxicillin Dosage Charts

Chart 1: Dosage Based on Weight

Weight plays a major role in determining the correct dosage. The following table provides general guidelines based on a standard dose (40-45 mg/kg/day) and a high dose (80-90 mg/kg/day).

Child’s WeightStandard Dose (40-45 mg/kg/day)High Dose (80-90 mg/kg/day)
5 kg (11 lbs)125 mg twice daily125 mg three times daily
10 kg (22 lbs)125 mg three times daily250 mg three times daily
15 kg (33 lbs)250 mg twice daily375 mg twice daily
20 kg (44 lbs)250 mg three times daily500 mg twice daily
25 kg (55 lbs)375 mg twice daily500 mg three times daily
30 kg (66 lbs)375 mg three times daily750 mg twice daily
40 kg+ (88 lbs+)500 mg three times daily1000 mg twice daily

Chart 2: Dosage for Common Infections

Different infections require specific amoxicillin dosages. Below are general guidelines based on common pediatric infections.

Infection TypeStandard DosageTreatment Duration
Mild Ear Infection40-45 mg/kg/day divided 2-3 times daily5-10 days
Severe Ear Infection80-90 mg/kg/day divided 2-3 times daily10 days
Strep Throat40-50 mg/kg/day divided 2-3 times daily10 days
Sinusitis45 mg/kg/day divided twice daily10-14 days
Lower Respiratory Infections45-90 mg/kg/day divided 2-3 times daily7-10 days
Urinary Tract Infections25-45 mg/kg/day divided 3 times daily7-10 days

Chart 3: Amoxicillin Liquid Dosage by Weight

For 125 mg/5mL suspension, commonly used in pediatric treatments:

Weight (kg)Weight (lbs)20-25 mg/kg/dose (twice daily)13-15 mg/kg/dose (three times daily)
8-10 kg18-22 lbs2.0 mL1.0-1.5 mL
11-14 kg24-31 lbs2.5-3.5 mL1.5-2.0 mL
15-18 kg33-40 lbs3.5-4.5 mL2.5-3.0 mL
19-22 kg42-49 lbs5.0-5.5 mL3.0-3.5 mL
23-26 kg51-57 lbs6.0-6.5 mL4.0-4.5 mL
27-30 kg60-66 lbs7.0-7.5 mL4.5-5.0 mL
31-36 kg68-79 lbs8.0-9.0 mL5.5-6.0 mL
37-44 kg82-97 lbs9.0-11.0 mL6.5-7.5 mL

What to Do If You Miss a Dose

Give the missed dose as soon as you remember—unless it’s close to the next dose.
Never double dose to compensate.
📌 When unsure, always contact your doctor!


Storage of Amoxicillin

🔹 Liquid Suspensions need refrigeration—store in a fridge, never a freezer.
🔹 Tablets & Capsules should be stored at room temperature, away from moisture.
🔹 Always check expiration dates before use.


Helping Your Child Take Medication

💡 Struggling to get your child to take amoxicillin? Try these techniques:

Flavored options: Ask your pharmacist about flavored formulations.
Mixing (when safe): Some liquids mix with applesauce—but confirm first.
Positive reinforcement: Praise and small rewards can encourage cooperation.
Distraction: Engage your child with a story or song while administering.


Final Notes

By understanding the prescription and administering amoxicillin correctly, you help ensure your child recovers safely and effectively. When in doubt, your pediatrician or pharmacist are your best resources!


Additional Resources

For more information about amoxicillin and pediatric medication safety, check out these expert sources:

  1. American Academy of Pediatrics – Antibiotic Guidelines https://www.aap.org/en/patient-care/antibiotic-guidelines
  2. Centers for Disease Control and Prevention (CDC) – Antibiotic Use in Children https://www.cdc.gov/antibiotic-use/children.html
  3. U.S. Food & Drug Administration (FDA) – Safe Medication Practices https://www.fda.gov/drugs/resources-you-drugs/children-medications

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