Benadryl Dosage Calculator
Calculate safe Benadryl (diphenhydramine) dosage for allergy relief based on age and product type
Calculate Benadryl Dosage
Age determines appropriate product and dosage
Choose the specific Benadryl product you have
⚠️ Age Restrictions & Warnings
• Not recommended for ages under 6
• Do not give to children under 2 years without doctor approval
• Always consult with a healthcare provider before giving medication to children
⚠️ Important Safety Information
• Drowsiness Warning: Benadryl may cause drowsiness. Avoid driving or operating machinery.
• Alcohol Warning: Do not use with alcohol or other drugs that cause drowsiness
• Age Restrictions: Do not give to children under recommended age without doctor approval
• Maximum Doses: Do not exceed 6 doses in 24 hours unless directed by a doctor
• TikTok Challenge: Never take large amounts for recreational purposes - this is extremely dangerous
Age-Based Dosing Guide
| Age Range | Product Type | Dose | Frequency |
|---|---|---|---|
| Under 2 years | Consult doctor | Doctor directed only | As directed |
| 2-5 years | Children's Liquid | 2.5ml (1/2 tsp) | Every 4-6 hours |
| 6-11 years | Children's Liquid/Chewable | 5ml (1 tsp) or 1-2 chewable | Every 4-6 hours |
| 6-11 years | Adult ULTRATAB/LIQUI-GELS | 1 tablet/capsule | Every 4-6 hours |
| 12+ years | Adult ULTRATAB/LIQUI-GELS | 1-2 tablets/capsules | Every 4-6 hours |
| 12+ years | Extra Strength | 1 tablet | Every 4-6 hours |
Common Side Effects
Drowsiness
Most common side effect (1-10% of users)
Dizziness
Avoid driving or operating machinery
Headache
Usually mild and temporary
When to Consult Doctor
Child under 2 years old
Symptoms persist after 7 days
Severe drowsiness or confusion
Difficulty urinating
Taking other medications
History of glaucoma or enlarged prostate
Medical Disclaimer & Safety Warning
Important: This calculator provides general dosage information for Benadryl (diphenhydramine) products based on manufacturer recommendations and age guidelines. It is not a substitute for professional medical advice, diagnosis, or treatment.
Always Consult Healthcare Provider:
- • Before giving to children under 6 years
- • If you have glaucoma or enlarged prostate
- • If you take other medications
- • If you have breathing problems or asthma
- • If symptoms persist or worsen
Dangerous Misuse Warning:
- • Never take large amounts for recreational purposes
- • "Benadryl Challenge" can cause seizures, coma, death
- • Do not combine with alcohol or other depressants
- • Overdose can cause serious heart problems
- • Always follow package directions exactly
Emergency: If someone has taken too much Benadryl or is experiencing severe drowsiness, confusion, seizures, or difficulty breathing, call 911 immediately or contact Poison Control at 1-800-222-1222.
Understanding Benadryl (Diphenhydramine)
What is Benadryl?
Benadryl is a brand name for diphenhydramine, a first-generation antihistamine medication used to treat allergic reactions. It works by blocking histamine receptors, reducing symptoms like sneezing, runny nose, and itchy eyes.
Common Uses:
- •Hay fever and seasonal allergies
- •Runny nose and sneezing
- •Itchy, watery eyes
- •Skin rashes and hives
- •Sleep aid (off-label use)
How to Use Safely
Safe Usage Tips:
- • Take with food if stomach upset occurs
- • Use measuring device provided with liquid products
- • Do not exceed recommended dosage
- • Avoid alcohol and other sedating drugs
Safety Precautions:
- • May cause significant drowsiness
- • Not recommended for children under 2
- • Check with doctor if you have medical conditions
- • Store safely away from children