Can Benadryl be used to help a child sleep?

No. Diphenhydramine should never be used simply to make a child sleep.

Pediatric Medication & Dosing

Children’s Benadryl Dosage Chart by Weight

Use your child’s current weight to find the appropriate amount of diphenhydramine, the medicine in Benadryl®. Check the active ingredient and concentration before every dose.

Written & Medically Reviewed by Dr. G Board-Certified Pediatrician · Fellow of the American Academy of Pediatrics · Updated September 2026

Quick Answer

Use your child’s current weight. Do not give diphenhydramine to a child younger than 6 years unless the child’s doctor specifically tells you to. Children’s liquid is commonly 12.5 mg per 5 mL.

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Important: Do not give Benadryl or another diphenhydramine product to a child younger than 6 years unless specifically directed by the child’s doctor. In particular, do not use it in infants without individualized medical direction. Doses shown for lower weights are clinician-directed reference information, not instructions for unsupervised use. Do not use it to make a child sleepy.

Children’s Benadryl Dosage Chart

This weight-based chart applies only to U.S. products containing diphenhydramine as the only active ingredient: liquid 12.5 mg/5 mL, chewables 12.5 mg, and tablets 25 mg.

Weight	Age guidance	Liquid 12.5 mg/5 mL	Chewable 12.5 mg	Tablet 25 mg
20–24 lb	Doctor guidance if under 6	4 mL	Not appropriate	Not appropriate
25–37 lb	Doctor guidance if under 6	5 mL	1 tablet	½ tablet
38–49 lb	Age 6+ unless doctor directs	7.5 mL	1½ tablets	½ tablet
50–99 lb	Age 6+ unless doctor directs	10 mL	2 tablets	1 tablet
100+ lb	Age 12+ label directions	20 mL*	4 tablets*	2 tablets*

*Adult dose: 50 mg. Always follow the current Drug Facts label and your child’s doctor. Products and directions may change.

Before You Give Benadryl

Confirm the only active ingredient is diphenhydramine and check the concentration.
Use the syringe or dosing cup supplied with the medicine—never a kitchen spoon.
Do not treat liquid, chewable, and tablet entries as interchangeable; verify the exact formulation, age restrictions, and product label.
For children whose clinician has recommended diphenhydramine, pediatric hospital reference tables commonly use an interval of every 6 hours as needed (no more than 4 doses in 24 hours on that schedule). Follow the specific product label and your child’s clinician; do not combine different dosing schedules.
Do not combine Benadryl with another product containing diphenhydramine or another sedating medicine unless a clinician approves it.

What Is Benadryl?

Benadryl is a brand name for diphenhydramine, a first-generation antihistamine used for allergic reactions, hives, itching and some nasal allergy symptoms. It commonly causes drowsiness, although some children become unusually excited or restless instead.

Diphenhydramine is not a preferred routine medicine for colds, and it should never be given simply to make a child sleep. Newer non-sedating antihistamines may be safer choices for routine allergies; ask your pediatrician which medicine fits your child’s symptoms.

How to Give Benadryl Safely

Read the active-ingredient and concentration labels every time.
Shake liquid medicine if the label instructs you to do so.
Measure liquid doses in milliliters with the supplied device.
Write down the dose and time, especially when more than one caregiver is involved.
Do not use topical Benadryl together with oral diphenhydramine unless a clinician specifically recommends it.
Ask a doctor or pharmacist before combining it with sleep medicines, cough-and-cold products, other antihistamines or any medicine that causes drowsiness.
Watch for marked sleepiness, confusion, agitation, fast heartbeat or trouble urinating.

Call Your Pediatrician

Before giving Benadryl to any child younger than 6 years.
If you are unsure of the correct product, concentration or dose.
If the child has glaucoma, breathing problems, trouble urinating, or takes prescription or sedating medicines.
If allergy symptoms persist, recur frequently or are not improving as expected.

Get Urgent Help Now

Your child has trouble breathing, wheezing, swelling of the tongue or throat, faintness, or rapidly worsening signs of an allergic reaction. Use prescribed epinephrine immediately for anaphylaxis and call 911.
Your child is difficult to wake, has a seizure, is hallucinating, is severely agitated or has a very fast heartbeat.
Your child may have received too much diphenhydramine or more than one medicine containing it.

Possible overdose: Call Poison Control immediately at 1-800-222-1222 in the United States. Do not wait for symptoms. Call 911 if the child collapses, has a seizure, has trouble breathing or cannot be awakened.

Dr. G’s Pearl

Benadryl can reduce itching or hives, but it is not a substitute for epinephrine when a child has anaphylaxis. Trouble breathing, throat swelling, faintness or rapidly worsening symptoms require epinephrine if prescribed and an immediate 911 call.

Frequently Asked Questions

What is the correct Benadryl dosage for kids?

Use the child’s current weight and verify that diphenhydramine is the only active ingredient. The chart covers liquid 12.5 mg/5 mL, 12.5 mg chewables and 25 mg tablets. Do not give it to a child younger than 6 years unless the child’s doctor directs you to.

Is children’s Benadryl dosage based on weight or age?

Weight is preferred because children of the same age can differ substantially in size. Age restrictions still apply: children younger than 6 years should receive diphenhydramine only when specifically directed by their doctor.

Can I give Benadryl to a toddler or 2-year-old?

Do not give diphenhydramine to a 2-year-old or other child younger than 6 years unless the child’s doctor specifically tells you to and provides dosing instructions.

What is the Benadryl dose for a 5-year-old?

A 5-year-old is still younger than the AAP’s over-the-counter age limit. Call the child’s doctor rather than selecting a dose from age or weight alone.

How often can children take Benadryl?

Pediatric hospital reference tables commonly recommend every 6 hours as needed, which means no more than 4 doses in 24 hours on that schedule. Some product labels specify a different interval and daily maximum. Follow the exact product’s Drug Facts label and the child’s clinician; do not mix instructions from different schedules.

Can Benadryl be used for a cold or to help a child sleep?

No. Diphenhydramine is not recommended for treating a cold and should never be used simply to make a child sleep. It can cause significant drowsiness or, in some children, agitation and excitability.

Does Benadryl replace epinephrine for anaphylaxis?

No. Benadryl does not stop the dangerous airway or blood-pressure effects of anaphylaxis. Give prescribed epinephrine immediately and call 911 for trouble breathing, throat swelling, faintness or rapidly worsening symptoms.

What if I accidentally gave too much Benadryl?

Call Poison Control at 1-800-222-1222 immediately in the United States. Call 911 for collapse, seizure, trouble breathing or inability to awaken.

Find the Dose with QuickDose™

Select Benadryl, the product formulation and your child’s current weight to view educational dosing guidance.

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Medical References

Related Parent Resources

Medical Disclaimer

This resource provides general educational information and does not replace medical advice, diagnosis or treatment from your child’s healthcare professional. Dosing recommendations and product concentrations may change. Always read and follow the current Drug Facts label and contact your pediatrician when you have questions. Use of this page does not establish a physician-patient relationship.