Ever since I began eating a better diet (fewer processed foods and less sugar), I’ve had almost no trouble with allergies. Some years, even ragweed season isn’t a problem. Eating a better diet is the best thing you can do.
When I used to take pills, Claritin worked well until I built up a tolerance for it. After that, I switched to Tavist. Tavist is still what carry with me in case I get hit with miserable sneezing fits. My Dad swears by Zyrtec, and his allergies are worse than mine ever were.
A saline rinse helps clear out the mucus, and can also remove irritants that have become trapped in your nose. Make sure to gargle with it as well, to clear out your throat. I use a nasal bulb, not a neti pot. Alkalol is a great to use alternated with saline, although I don’t use it because I’m prone to swallowing. It’s one of those old-fashioned medicines that’s hard to find in stores now.
Making sure you get enough of Vitamins C and D will also help a lot. Taking garlic (either in your food, through pills, or from an extract) can help ease minor symptoms, and it’s overall good immune support.