My doctor suggested I try Claritin D Allergy Medicine after several sinus infections during Spring and Fall in North Carolina. We have a large amount of pollen! I purchased this product for over $20 and that was WITH a coupon!! I have found very little relief from  using the product. I also found that it was not supposed to be used with people who have a thyroid disorder! I have a thyroid disorder and my nutty doctor suggested it anyway without even remembering my thyroid problems! However, I did clear the Claritin D Allergy Medication with my Endocrinologist prior to using it the first time!...