Non-prescription treatment for your allergies depends on your symptoms. See the chart below. For cough caused by nasal drainage and irritation of bronchial passages. Antihistamines For runny nose, sneezing, itchiness of throat and sometimes helpful for eye irritation. You can use single-agent products if you have just one allergic symptom, like a runny nose.
Combination products are for fighting multiple allergy symptoms simultaneously.
There may be as many as five active ingredients in some combination drug products, which complicates things. Multiple drugs in a single pill or syrup may wear off at different times, too. So symptoms and side-effects may go up and down all day long even when you're taking the medicine on the recommended schedule. The products we've recommended below have been chosen to avoid most of the pitfalls above. Because of this, we've paid special attention to dosing convenience and minimizing common side-effects like drowsiness.