What's the best non-drowsy over the counter (OTC) allergy medicine?

Some OTC allergy medications are less likely to cause drowsiness than others because they are based on more recent formulations. These medications include Levocetirizine, Fexofenadine HCI, Cetirizine, Loratadine.

What's the strongest over the counter allergy medicine?

The strength of any over-the-counter medication may depend on your body chemistry. Additionally, most medications are available in different concentrations so that you can try stronger doses of the medication that is most effective for you.

What's the best allergy medicine for congestion?

Diphenhydramine, Cetirizine, Fexofenadine, and Loratadine may be more effective at treating the specific symptom of congestion than some other OTC medications. These drugs are all different forms of antihistamines.