I have pollen allergies. among other things, i use zaditor and sometimes bpreve for my itching eyes. are there any new, low-cost, more-effective antihistamine eye drops available?

Allergic conjunctiv: may not be the problem you have , however zaditor / Bpreve, if taken should be taken on regular basis to produce an effect, not on as needed basis, it takes time to see a result, contact lenses may be a problem if applied right after any eye drops. Olopatadine may be a good alternative together with loratadine regularly, read the labels carefully, see your doctor if no improvement, good luck