Vomiting

Question
My father had a Boxer who is around a year old now, she was a rescue. She had begun to throw up all the time, some times 3 times a day. They vet tested her for Addisons and Cushions disease and she tested Negative.  Can you think of any other things we can look into, as we want her to be healthy... Thank you!

Answer
Consistent vomiting could be a number of things.

And what did the vet say? What did the vet do about it? I can't believe a vet would test and then dismiss it.

What kind of vomit is it? Yellow bile with no substance? Food? Congealed?  Curled?

Without knowing, it is hard to say.

If it is a clear yellowish bile, then is is kidney problems.

Get another vet, and a copy of her tests and health records from the old vet to take to the new vet.