I also saw my first reaction to Fervac-D around 3 weeks ago. Our rescue used to use Fromm-D, but when they went to Galaxy-D we started to use the Fervac, since Solvay recommended not to use it in ferrets. Anyway, being a vet tech. I have seen reactions before, but never this bad. The ferret started to vomit, have diarrehea, and stopped breathing all in the second it took to load the Epineohrine. I went sub-q first and she still did not react, so I went intercardiac and she snapped out of it right away, but boy was that a scare!! I called our vet and talked with him some. 3 weeks later she is just wonderful thank God!!. Stephanie [Posted in FML issue 1160]