I took Piriton today for the first time ever at 10:30. By 14:30, my nose had started to run again but I still felt like I wasn't in my body. I pulled up a spreadsheet and then couldn't remember for the life of me why. My boss told me to go home so I did, taking care not to cross any major roads.
Actifed just knocks me out so I'll try benadryl tomorrow.