I had been treated for a high tsh ( in the 5.0) range with porcine thyroid hormone 65mg by a naturopath. Here in the states they are the only doctors you can find to treat a thyroid in that range. I felt slightly better but not great. The practice supplied the med. recently they switched to bovine glandular hormone, which I took. I began waking with morning nausea, which within a week turned into constant nausea like I had the flu. Horrid, I was bed ridden. Stopped taking it and am slowly improving. I do have an appointment with a functional doctor who specializes in thyroid as I feel the other doctor didn't have a handle on how to treat thyroid disease, but I was wondering if anyone else had experienced this with bovine hormone or had an explanation on why this would happen? I have been dealing with symptoms for years and and have told that my tsh was normal. This has been hell.