Great news on the test results, Di!!
We have some dogs on thyroid replacement--English setters are notorious for auto-immune hypothyroidism. The pills are cheap, come in a chewable form, and work like a charm for our guys.
As for the Deramaxx, our biggest problem with longterm use is stomach upset. English setters are also notorious for their tender tummies. We have better luck if we make sure they get their dose with their biggest meal.
I hope Ginger has many more good years to come