As I mentioned earlier I am on my second brand of antihistamine tablets because of my rash, as believe it or not I was allergic to the first one, and now three days after taking the second have found to be allergic to that particular brand too. Have had to stop taking them because of unpleasant side effects. My doctor is amazed because she has never come across anyone who is allergic to the thing you are taking for the allergy. Trust me to be one of the uncommon occurrences written in the list of side affects. Any one else had any similar experiences. ??? busy_lizzie