0 new to the Sugar'/how effective is the insulin pen?? and what's the most effective?? and how are your pet's doing today since your last blog?? June 16, 2011 by Zenovia Castro How have your pets been since your last blog?? and what are the most effective and low cost insulin?? Read more > Retrieved from "http://petdiabetes.wikia.com/wiki/User_blog:Zenovia_Castro"