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Suggested Dosage Charts

Acetaminophen (Tylenol, Tempra, etc.)
Weight (pounds and kg) Age Infants’ 160mg/5mL Children’s liquid 160mg/5mL Children’s chewable 160mg Adult Regular Strength 325mg Adult Extra Strength 500mg
Under 12lb/5.5kg 2-3m 1/4 tsp(1.25mL) 1/4 tsp (1.25mL)      
12-17lb/5.5-7.9kg 4-11m 1/2 tsp(2.5mL) 1/2 tsp (2.5mL)      
18-23lb/8-10.4kg 12-23m 3/4 tsp(3.75mL) 3/4 tsp (3.75mL)      
24-35lb/10.5-15.9kg 2-3y 1 tsp(5mL) 1 tsp (5mL) 1 1  
36-47lb/16-21kg 4-5y   1 1/2 tsp (7.5mL) 1 1/2 1  
48-59lb/21.8-26.8kg 6-8y   2 tsp (10mL) 2 1  
60-71lb/27-32kg 9-10y   2 1/2 tsp (12.5mL) 2 1/2 1  
72-95lb/32.7-43kg 11-12y   3 tsp (15mL) 3 1 1
Over 96lb/Over 43kg Over 12y   4 tsp (20mL) 4 2 2

Acetaminophen suppositories (120mg/325mg) are given rectally every 4 – 6 hours.

Ibuprofen (Advil, Motrin, etc.)
Weight (pounds and kg) Age Infants’ drops 50mg/1.25ml Children’s Liquid 100mg/5ml Chewable 100 mg tablet Adult 200mg tablet
Under 12/lb 5.5kg 0-6m Not recommended for infants under six months old.      
12-17lb/5.5-7.9kg 6-11m 1.25 ml 1/2 tsp (2.5mL)    
18-23lb/8-10.4kg 12-23m 1.875 ml 3/4 tsp (3.75mL)    
24-35lb/10.5-15.9kg 2-3y 2.5 ml 1 tsp (5 mL) 1  
36-47lb/16-21kg 4-5y   1 1/2tsp (7.5mL) 1 1/2  
48-59lb/21.8-26.8kg 6-8y   2 tsp (10 mL) 2 1
60-71lb/27-32kg 9-10y   2 1/2tsp (12.5mL) 2 1/2 1
72-95lb/32.7-43kg 11y   3 tsp (15 mL) 3 1 1/2
Over 96lb/Over 43kg Over 12y   4 tsp (20 mL) 4 2

Given by mouth every 6 – 8 hours.

Diphenhydramine (Benadryl)
Weight Liquid 12.5mg/5 ml Chewable Tablets 12.5mg each Tablets 25mg each
14-17 lbs & over 6 months 1/2 tsp (2.5 ml) Use liquid Use liquid
17-21 lbs 3/4 tsp (3.75 ml) Use liquid Use liquid
22-32 lbs 1 tsp (5 ml) Use liquid Use liquid
33-42 lbs 1-1 1/2tsp (5–7.5 ml) 1 tablet Use liquid
43-53 lbs 1-2 tsp (5-10 ml) 1-2 tablets 1 tablet
54-64 lbs 1-2 tsp (5-10 ml) 1-2 tablets 1 tablet
65-75 lbs 1-2 tsp (5-10 ml) 1-2 tablets 1 tablet
76-86 lbs 1-2 tsp (5-10 ml) 1-2 tablets 1 tablet
> 86 lbs 2-4 tsp (10-20 ml) 2-4 tablets 1-2 tablets

Dose by mouth every 6 – 8 hours. Side effects can include drowsiness or excitability.

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