I have been a seasonal allergy sufferer my whole life. I've tried just about every allergy medication out there with just about no luck -- that is, until I tried Equate Allergy & Sinus Medication, Wal-Mart's antihistamine/nasal decongestant pill.
Almost every time I use this medication (once every two weeks or so, when my allergies get bad) it dramatically lessens my symptoms. No more itchy eyes, sneezing, and runny nose! It's a miracle drug.
One problem I do have, however, is that this medication makes me SERIOUSLY drowsy. I don't weigh very much, so that may be why it affects me so dramatically, but for about two hours after I take this, I don't really feel like myself. Sometimes I get drowsy to the point that I feel like I can't drive safely. Still, to me it's worth it to get rid of my allergy symptoms!
Another plus is that the pill is pretty small for those of you (like me!) who don't like swallowing big pills. Also, one pill works for the whole day, in my experience.