I used to take Claritan and it, too, stopped working for me. I'm allergic to Singulair.

I use Zyrtec daily now and Benedryl when I have bigger symptoms (like welts). When they were very bad, my doctor had me double the Zyrtec for about a week or two until things got better.

Flonase was good but not strong enough for me, so I was upped to Nasonex.

I also take allergy shots weekly, and have limited dairy which seems to help a lot. Allergies suck lol.