Any bad experiences with Trilostane to treat canine Cushings?

On the internet I've read great reviews - how Trilostane (also known as Vetoryl and Modrenol) are safer and just as effective as Lysodren - which can kill off too much of the adrenal and cause Addison's disease. My vet says that the Cushings specialist at UC Davis has seen dogs die on Trilostane and recommends Lysodren, but this conflicts with everything I've read on line. So confused... can anyone assist?