There are tons of allergy medicines available, both over the counter and by prescription. So, how can you know which one is best?
The answer to this question is not a simple one. First, it will be helpful to explore the main type of medicine used to treat allergies, which is an antihistamine. An antihistamine is a drug that blocks a receptor for histamine. Histamine is a chemical in your body that over-reacts to certain triggers, or allergens, such as pollen, mold, dust mites or pet dander...


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