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Medicine / Dosages

Diphenhydramine (Benadryl)

 
Diphenhydramine (Benadryl) Dose Table for every 6 - 8 hours
Child's Weight (pounds) 17-21 22-32 33-42 43-53 54-64 65-75 76-86 >86 
Liquid 12.5 mg/ 5ml 3.75 ml 5 ml 7.5 ml 10 ml 12.5 ml 15 ml 17.5 ml 20 ml
Chewable 12.5 mg/tab -- 1 tab 1 1/2 tabs 2 tabs 2 1/2 tabs 3 tabs 3 1/2 tabs 4 tabs 
Tablets/Capsules 25 mg -- - - 1 tab 1 tab 1 tab 1 tab 2 tabs
 

When to Use. Treatment of allergic reactions, nasal allergies, hives and itching.

Table Notes:

  • AGE LIMITS. For allergies, don't use under 1 year of age. (Reason: it causes most babies to be sleepy). For colds, not advised at any age. (Reason: no proven benefits). They should be not be given if under 4 years old. If under 6 years, don't give products with more than one ingredient in them. (Reason: FDA recommendations 10/2008).
  • DOSE. Find the child's weight in the top row of the dose table. Look below the correct weight for the dose based on the product you have.
  • MEASURE the DOSE. Syringes and droppers are more accurate than teaspoons. If possible, use the syringe or dropper that comes with the medicine.  If not, you can get a med syringe at drug stores. If you use a teaspoon, it should be a measuring spoon. (Reason: regular spoons are not reliable.) 
  • ADULT DOSE. 50 mg
  • HOW OFTEN. Repeat every 6 hours as needed.
  • CHILDREN’S BENADRYL FASTMELTS. Each fastmelt tablet equals 12.5 mg. They are dosed the same as chewable tablets.
Benadryl  (Diphenhydramine) - every 6-8 hours as needed
Liquid (12.5mg/5ml) - 
17- 21 lbs- 3.75ml
22-32 lbs- 5 ml
33-42 lbs- 7.5ml 
43-53lbs- 10 ml
54-64 lbs- 12.5 ml 
65-75 lbs- 15 ml
76-86 lbs- 17.5 ml
>86 lbs- 20 ml

Chewable 12.5mg tablet                                       
22-32 lbs- 1 tablet
33-42 lbs- 1 1/2 tablets
43- 53 lbs- 2 tablets
54- 64 lbs-  2 1/2 tablets
65-75 lbs- 3 tablets
76-86- 3 1/2 tablets
>86- 4 tablets

Benadryl 25 mg tablets- 43- 86 lbs- 1 tablet; >86 lbs- 2 tablets 
 











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