Believe it or not, trees, grass, weeds, pollen are not the problem when it comes to seasonal allergies.
Seasonal allergies are a sign that your immune system is overloaded and out of balance. This typically occurs because the lymphatic system is congested and cannot properly clean up and move inflammatory agents out of the body. About 80% of your immune system is housed in your digestive tract. If the digestive tract is inflamed then it is more reactive. When you heal the digestive tract, the immune system is less reactive and able to respond appropriately to substances in its environment. As we heal the digestive tract, seasonal allergies will clear up. Therefore you need to heal the digestive tract in order to take control of your seasonal allergies.
To address the allergies symptomatically, quercetin stabilizes mast cells which is responsible for the release of histamine, while anti-histamine medications block histamine.