Oh Linda that IS scary! I'm so glad you figured it out. Oh my!
No, technically it is not an allergic reaction but the Dr. now has it on their records that I'm allergic to it & I have a medical bracelet & also have listed it as an allergy. It's a good drug which has been in use for a long time & also used for many, many years in Veterinary medicine. It just isn't a good drug for me. We just don't jive.