hercules&dazey

hello im new to this i have never posted before. My 3yo male english staffy has had hives 3times in the last week i have no idea what its from! ihave given him a zyrtec thismorning but it doesnt seem to be working...

we were thinking of doing that but thought there might be a few home remedies to try 1st. thanks

hi our hercules is the most obidient dog i have ever had, of lead he will come when called and so on. but dazey we have only had her 6 weeks and she is dog aggressive at the beach and dog park she is approx. 8yrs old any one have any ideas on how to stop this? will she learn from herc how to be good?