zyrtec lasts 24 hours so usually benadryl is not needed. it is safe to give it at night (even if he is on zyrtec) but this first-generation antihistamine can interfer with restful dream-state sleeping.
is it ok for my 5 year old to take benadryl on a daily basis. he has really severe outdoor allergies and i was told that benadryl at night and zyrtec in the morning is ok to do. can you please confirm yes or no?