I have terrible symptoms every spring. My symptoms include itchy, red, eyes, stuffy nose and scratchy throat. It is also difficult to sleep at night due to nasal congestion and coughing resulting from post-nasal drip. The first night I used Quercetin, I was able to sleep because I could breathe and had no cough! In the morning, my eyes were clear and not itchy. I could not believe a natural product could be this effective, this quickly, and thankfully with no side-effects!� - Trina I