Diphenhydramine. I don't use it, but I know of it. It's mostly for like hay fever and stuff.
I'm allergic to cats and dogs, so I use the common over-the-counter Cetirizine pills when I expect contact with felines or canines.
It's a good thing I don't want pets. It's mostly a practical issue, because I like animals and they like me.
Mightier than the tread of marching armies is the power of an idea whose time has come