I have recently (1 month) discovered Allegra D 24 hour..It has cleared up my allergies. I take it as instructed once a daily around 10:00A. However I am finding that i really concetrate when I swallow food and sometimes have difficulties burping.. Suggestions? Im am stopping the medication today. I went to my doctor and he did not make any suggestions. He referred me to a Gastrologists, and they did not suggest anything but to do tests that were going to cost inexcess of $700.00.. Anyone else had this problem. I want to be sure im not crazy...LOL