Here is a link to the full text of this 2011 research study published by Dr. Edward C. Feldman of University of California at Davis:

"Evaluation of twice-daily lower-dose trilostane treatment administered orally in dogs with naturally occurring hyperadrenocorticism"


Here is a link to a more streamlined summary of Dr. Feldman's key reasearch findings:

http://veterinarymedicine.dvm360.com/vetmed/Medicine/Hot-Literature-Hyperadrenocorticism-Is-lower-dose-/ArticleStandard/Article/detail/743086