Dosage chart Diphenyhydramine (Benadryl™)

Note: Only for Infants 6 Months or Older. DO NOT give Benadryl to a child younger than 2 years unless advised by your physician.

Benadryl, an antihistamine, can be administered in different forms: Children’s liquid suspension, Children’s Chewable tablets, Children’s Meltaway strips, or adult tablets.

WeightMilligram dosageLiquid 12.5mg/5mL (5mL= 1tsp)Chewable (12.5mg each)Tablets (25mg each)
12- 14 lbs5mg⅓ tsp
14 – 19 Ibs6.25 mg½ tsp
20 – 27 lbs9 mg¾ tsp
28 – 34 lbs12.5 mg1 tsp1 chew
35 – 41 lbs16 mg1 ¼ tsp1 chew
42 – 48 Ibs19 mg1 ½tsp1 ½ chew
49 – 54 lbs22mg1 ¾ tsp1½ chew
55 – 62 lbs25 mg2 tsp2 chew(s)1 tablet
63 – 69 Ibs28 mg2 ¼ tsp2 chew(s)1 tablet
70 – 81 Ibs32 mg2 ½ tsp2 ½ chew(s)1 tablet
82 – 94 lbs37 mg3 tsp3 chew(s)1 tablet
95 – 109 lbs43 me3 ½ tsp3 ½ chew(s)1 tablet
>110 Ibs50 mg4 tsp4 chew(s)2 tablets

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