I suffered with chronic sinus infections and headaches for more than twenty years. Doctors tried every medicine and nasal spray on the market. The best they could do for me was Claritin D 24 hour pills with daily Nasacort. This was what I took for more than 4 years. Whenever I missed a dose I would get the headache and it would lead to another infection which would take a Zpack to treat. When I went to Dr. Holly I was looking for a different answer. I was one of the very lucky ones. After a few weeks of adjustments I tried stopping the Claritin and I have not taken it now for more than two years. Thanks to Dr. Holly, I have not even needed an aspirin for a headache.