That's a lot of antihistamines before a race. Are you sure that many is beneficial?
I was really sneezy on Friday. The benadryl +
180 10 mg of cetirizine at 12 hour intervals seemed to help.
Edited: the standard 24-hour dose of cetirizine is 10 mg, which I was taking every 12 hours. I confused it with fexofenadine, which has a 180 mg/24 hour dose.
Tough to balance flighting the allergies and the drowsiness. I dunno what I would have taken in that situation -- that much Benadryl puts me to sleep even with that much caffeine. Definitely could have affected your orienteering.
"It was the drugs!"
I agree with above ladies, is this what you typically take before O races this time of year?
coach has benefitted immensely in the long term from having taken waaaaaay more benadryl than that. But his circumstances were unusual, though not unrelated to a condition of yours. (I would not advise following his lead unless on the recommendation of at least one physician.)
I actually don't typically take antihistamines during allergy season, but I have been injured or recovering from injuries in several of the previous springs - and so indifferent to any adverse performance effects. In my daily life, while I have experimented with both fexofenadine and cetirizine, I usually just tolerate the sneezing.