Question: what is the most powerful over the counter allergy medicine?
Answer: Allegra Adult 24-Hour Allergy Relief at Amazon. ...  Children's Zyrtec Allergy Relief Syrup at Walmart. ...  Claritin 24-Hour Allergy Reditabs at Amazon. ...  Xyzal Allergy Relief Tablets at Walmart. ...  Zyrtec Prescription-Strength Allergy at Amazon. ...  Benadryl Ultratabs Antihistamine at Amazon.