assuming you adhere to the proper doses these two medications are compatible. please be advised that children can have a paradoxical effect with benadryl. in other words an antihistamine like benadryl that would make you sleepy can make a two year old hyper and more active! this may not be desirable at bedtime. don't forget that saline nose drops or sprays and the use of a cool mist humidifier at bedtime is also very helpful for colds.
can i give my 2 year old hylands baby cough syrup and then bynadryl a few hours later for her runny nose and sneezing?