4 doctors weighed in:

How much Benadryl (diphenhydramine) can I give my one year old. She weighs 20 lbs?

4 doctors weighed in
Dr. Holly Maes
Pediatrics
3 doctors agree

In brief: Benadryl (diphenhydramine) dose

A safe dose for a 20# 1 year old is 6.
25mg, which is a half tsp of the children's liquid. This dose can be given up to 4 times a day (every 6 hours). If needed for more than a couple of days, should consult your doc about other options - is fine short term, but should not be a long term medicine without ok of your pediatrician.

In brief: Benadryl (diphenhydramine) dose

A safe dose for a 20# 1 year old is 6.
25mg, which is a half tsp of the children's liquid. This dose can be given up to 4 times a day (every 6 hours). If needed for more than a couple of days, should consult your doc about other options - is fine short term, but should not be a long term medicine without ok of your pediatrician.
Dr. Holly Maes
Dr. Holly Maes
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