I love to have this product on hand just in case. Before our last trip to visit our in-laws I pre-sent a box of all the essentials that I didn't want to take on the plane; diapers, wipes, and of course Benadryl. Sure enough we cracked the bottle open on the second day of the trip when my 2 year old broke out in hives. We were 30 mins away from the nearest dr or store. I was very lucky to have had it on hand. It took care of his hives in no time! We still don't know what he reacted to.
Beadryl is s must have, even if your kids don't have allergies. You never know what can happen.