Environmental allergies are the hardest ones to control. Among all the Antihistamines that I’ve tried the only ones that really cured my son were the natural remedies. The advantage of utilizing natural or alternative remedies is because they are good for the body and don’t have any side effects. They strengthen the body and help minimize allergic reactions, or as in my case, completely cure them. On the other side prescriptions and antihistamines are a bit tricky. Once you get started on them you can’t stop, because the second you do all of the symptoms will instantly attack you. It’s a bad cycle and it does not allow the body to naturally adapt to the environment. In severe cases adaptation should be done slowly and with precaution, perhaps all prescriptions doses should be minimized gradually and exposure to allergen must be minimal and scheduled. To overcome environmental allergies one must heal internally first and then expose little by little to allergens such as pollen.