Drug Dosage & MedicationTool Review

Benadryl Dosage Calculator

Provided bySt. Louis Children's Hospitalstlouischildrens.org

This free Benadryl dose table maps child weight to liquid, chewable, tablet, and capsule dosing amounts. It also incl...

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About this tool

What Benadryl Dosage Calculator does

The Benadryl Dosage Chart from St. Louis Children's Hospital provides a weight-based diphenhydramine dosing table for children, covering liquid, chewable, tablet, and capsule formulations. Users input a child's weight in pounds to find the corresponding milliliter, teaspoon, or tablet amount. The page includes practical administration notes, such as preferred measurement tools and age-specific guidance, along with recommendations on frequency and special considerations for use in children under six years old.

Step by step

How to use the St. Louis Children's Hospital Benadryl Dosage Calculator

  1. 1

    Find the child's weight in pounds on the chart

  2. 2

    Locate the corresponding dose amount for the specific Benadryl formulation available (liquid, chewable, tablet, or capsule)

  3. 3

    Follow the 'How Often' guidance for repeat dosing based on the child's age

  4. 4

    Use the recommended measurement tools (syringe or dropper) for liquid doses to ensure accuracy

Is it right for you

Best for

Parents and caregivers seeking a quick, weight-based reference for administering diphenhydramine to children, particularly when multiple formulation options are available.

Limitations

  • Guidance is specific to U.S. product concentrations; international products may vary
  • Tool provides general dosing tables and does not replace professional medical advice
  • No unit switching between pounds and kilograms within the interface
Questions

Benadryl Dosage Calculator FAQ

Can this chart be used for infants under one year old?
No, the table notes that Benadryl should not be used for allergies in children under 1 year of age because it commonly causes drowsiness in babies.
How should liquid Benadryl be measured for the most accuracy?
Use a syringe or dropper for liquid doses; if using a teaspoon, it must be a measuring spoon since regular spoons are not reliable.
What is the recommended interval for repeat doses in children under six years?
Repeat every 6 to 8 hours as needed, except do not use under 1 year unless directed by a healthcare provider.
Does the chart work for all Benadryl product types?
Yes, the table includes dosing for liquid, chewable tablets, regular tablets, and capsules, with each formulation listed by weight range.
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  1. Children's Hospital Colorado
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    This free diphenhydramine (Benadryl) dose table provides weight-based dosing across multiple formulations. It is desi...

  2. HealthyChildren.org (American Academy of Pediatrics)
    healthychildren.org

    This page offers a free diphenhydramine (Benadryl) dosing table to determine the correct amount by child weight. It i...

  3. Omni Calculator
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    Use the benadryl dosage calculator to check how much Benadryl you should take yourself or give to your little one.

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