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Diphenhydramine (Benadryl)

When to Use: Treatment of allergic reactions, nasal allergies, hives and itching.
How to Use Dose Table: 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.

Child's weight (pounds) 20-24 25-37 38-49 50-99 100+ lbs
Liquid 12.5 mg/ 5 milliliters (mL)
4 5 7.5 10 - mL
Liquid 12.5 mg/ 1 teaspoon (tsp) ¾ 1 2 - tsp
Chewable 12.5 mg - 1
2 4 tabs
Tablets 25 mg - ½ ½ 1 2
Capsules 25 mg - - - 1 2 caps

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. It should not be given if under 4 years old. If under 6 years, don't give products with more than one ingredient in them (FDA recommendation 2008).
Measuring 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.
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.
Use in Countries Outside the U.S.: Dose tables are based on U.S. products. Concentrations may vary in countries outside the U.S. Always check the concentration is the same before using this dose table.