IAWTC. I've been having a ridiculous amount of breathing problems the last couple of months and they can only marginally be blamed on my pregnancy. My allergies have been out of control this season. My dr had me start taking my allergy med in the morning (24 hour that tends to wear off around hour 10) and a benadryl around 9 or 10. I started this a couple of nights ago and OMG I can breathe! I can sleep and it seems to keep me going through the day ok. And Benadryl is ok for every day use.