how much benadryl for a 2 year old
24-35 lbs is considered a 2 year old My son has been on benadryl since before he turned 1 per doctors orders (he has itchy eczema). Source(s): I am a nurse.beetlemilk Â· 7 years ago.Thumbs up.y pediatrician recommended it to help during teething. 2.5 ml was the dose we gave and still give my 17 month old and my 3 year old... they have a 4 lb weight difference. Brittany Â· 2 years ago.