Yeah, Claritin blows...
Sounds dumb, but ive found that Walgreens 'Zyrtec', Wal-zyr or whatever they call it, seems to work the best.
DayQuil seems to also work wonders even though its not even allergy medicine lol
Was out at a golf outing yesterday for 6 1/2 hours and i'd usually be dying, but had 2 whole nostrils to breathe out of... I never get that.