some times when mine is really bad I take my loratadine with cold and flue decongestants its the same as taking benadryl plus which is an antihistamine like loratadin (although not loratadine) and pseudophedrine which is a decongestant that stops your nose from stuffing up and running. a lot cheaper than the brand name pills.Benadryl Plus are only things working for me that I can still work and drive on. £6 for 12 though and you're only allowed one pack at a time.
My nan also gives me the ones she gets from hospital but man alive they knock me bandy