Benadryl (diphenhydramine HCI) Dosage Chart
Give the weight‐appropriate dosage listed below every 6 hours as needed, or as
recommended by your pediatrician.
FastMelt
Tablets/Capsules & Quick
Weight
Elixir
Chewable
Dissolve Strips
(pounds)
(12.5mg / 5ml)
(12.5mg tablets)
(25mg)
26‐33
5 ml (1 tsp)
1 FastMelt
33‐39
6 ml
1 FastMelt
40‐45
7 ml (1 ½ tsp)
1 ½ FastMelt
46‐45
9 ml
1 ½ FastMelt
53‐58
10 ml (2 tsp)
2 FastMelt
1 tab/cap/strip
59‐65
11 ml
2 FastMelt
1 tab/cap/strip
66‐72
12 ml (2 ½ tsp)
2 ½ FastMelt
1 ½ tab/cap/strips
73‐80
14 ml
2 ½ FastMelt
1 ½ tab/cap/strips
81‐88
15 ml (3 tsp)
3 FastMelt
1 ½ tab/cap/strips
89‐99
17 ml
3 FastMelt
2 tab/cap/strips
100‐109
18 ml
4 FastMelt
2 tab/cap/strips
110+
20 ml (4 tsp)
4 FastMelt
2 tab/cap/strips
This is the maximum recommended safe dosage based on your child’s weight. If
the listed dosage makes your child too sleepy, you may need to decrease the
amount of medicine given in each dose.