I have a thoroughbred, 4 y/o mare. Just rescued her 5 days ago. Today I noticed she has an extremely bad outbreak of hives!!! Having just getting her I am not sure what caused this, and she was a race horse before so I cant really contact any previous owner. I was told to try flax seed or benadryl. I have never had this problem with a horse before so my question is what kind of flax seed should i try? (Any brand and specific product suggestions would be great) And if I give her benadryl should it be childrens and how much should I give her?!?! I am assuming the benadryl would be best to get the hives to go away and if flax seed works give her that as a daily suppliment to keep them away?
Please help ASAP!!!! Thank you in advance!