How should I store amoxicillin suspension?

Most amoxicillin suspensions should be stored in the refrigerator after mixing and used within 14 days. Check the label for specific storage instructions. Shake well before each use.

What if my child vomits after taking amoxicillin?

If your child vomits within 30 minutes of taking the dose, you may give another full dose. If vomiting occurs more than 30 minutes after the dose, do not give another dose. Contact your doctor if vomiting continues.

Can I mix amoxicillin with food or drinks?

Yes, amoxicillin can be mixed with formula, milk, fruit juice, or soft food to make it easier for your child to take. Give the mixture immediately and ensure your child takes the entire amount.

What is high-dose amoxicillin used for?

High-dose amoxicillin (80-90mg/kg/day) is used for infections that may be caused by drug-resistant bacteria, such as certain ear infections or sinusitis. Your doctor will determine if high-dose therapy is needed.

Amoxicillin 400mg/5mL Dosage Calculator for Children

Amoxicillin 400mg/5mL

Calculate the correct mL dose of amoxicillin 400mg/5mL suspension for children based on weight. Includes standard and high-dose options.

Child's WeightEnter your child's current weight

Dosing RegimenSelect based on your doctor's prescription

Doses per DayHow often the medication is given

This calculator provides estimates based on standard pediatric dosing guidelines. The actual prescribed dose may vary based on the specific infection being treated, your child's medical history, and your doctor's clinical judgment. Always follow your doctor's specific instructions.

Visual Syringe Guide

Use this interactive syringe visualization to verify your calculated dose. Enter the volume from your calculation above to see exactly where the plunger should land.

Syringe Configuration

Desired Volume (mL)

mL

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Administration Note

For a 0.50 mL dose, pull the plunger back until the top ring of the black stopper aligns with the corresponding mark.

Volume Match0.50 mL

About This Calculator

Amoxicillin 400mg/5mL is a concentrated pediatric antibiotic suspension commonly prescribed for ear infections (otitis media), strep throat, sinus infections, and other bacterial infections in children. The 400mg/5mL concentration allows for smaller volumes, making it easier to give to children who may resist taking medication.

How It Works

Enter your child's weight and select the dosing regimen prescribed by your doctor. Standard dosing (25mg/kg/day) is used for mild infections, while high-dose regimens (45-90mg/kg/day) are used for more serious infections or those caused by resistant bacteria. The calculator determines the exact mL amount for each dose.

Frequently Asked Questions

The 400mg/5mL concentration is more concentrated, meaning your child needs to take a smaller volume for the same dose. This is often preferred for children who have difficulty taking larger amounts of liquid medication.

Clinical Review

Dr. Igor I. Bussel, MD

Board-Certified Ophthalmologist

Dr. Igor I. Bussel is a board-certified ophthalmologist and fellowship-trained surgeon affiliated with the University of California, Irvine (UCI), the Gavin Herbert Eye Institute, and the UCI School of Medicine.

Last Updated: 2025-01-05

Sources & Guidelines

Medically Reviewed

Evidence-Based

Updated 2025-01-05

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References

Reviewed by: Pediatric Clinical Review Team (MD, FAAP)

Last updated: 2025-01-05