I understand the reasons that people are often prescribed meds that are "off label."
For example, Welbutrin was first prescribed as an anti-depressant. Doctors discovered that people taking it, were also able to quit smoking. Soooo, it is often prescribed as an aid to help people quit smoking.
However, if the label stated (
for example only) that it could cause blindness, if prescribed to a diabetic...NO doctor would prescribe it off label to a diabetic. If a doctor did, he/she would have to "answer" to everyone and their brother!!
Vets and the pet food industry do NOT have anyone to "answer" to. As the person said in comment #3...
...No offense, I know nothing about your skills as a vet, but it's easy to be a "risk taker" when the potential "bite in the butt" is little more than a mosquito bite.