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Diphenhydramine (Benadryl)

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Diphenhydramine (Benadryl) Dose Table for every 6 - 8 hours

For allergic reactions under age 1 yr, dosing:  11-16 lb give 2.5ml, for 16-21lb give 3.75ml.

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

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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.) Keep in mind 1 level teaspoon equals 5 mL and that ½ teaspoon equals 2.5 mL.  

  • 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.

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