Guest guest Posted April 11, 2005 Report Share Posted April 11, 2005 There is such a thing as delayed allergic reactions..i.e. it might take several days (or weeks) before the allergic reaction occurs.. IMO tightness in the chest, and difficulty breathing is classic allergic reaction - not classic herx. Barb Pam wrote in part: However the next day I took an even smaller dose and this real problem with breathing came back and it really did scare me. it felt like there was an elephant sitting on my chest. The local pharmacist said any reaction that came on within a very short time of taking the drug was almost certain an allergic reaction and she didn't think I should take anymore. I was only too happy to agree to this and noted the patient leaflet said " breathing difficulties " were a known side effect that should be discussed with a doctor Doxy has never caused this sort of reaction even at 400 mg daily, neither has Tinidazole, Flagyl, Erythromycin or any other antibiotics I have tried. I don't have any problems at all normally with breathing even if I have completely overdone things by over- excercising. Of course the engineer insisted it was .....guess what? a herx!!! Quote Link to comment Share on other sites More sharing options...
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