Here is the post from Dr. Kellon regarding the pergolide mesylate/Prascend "mystery".
Dr. Kellon posts on CIR 0615 (Cushing's Insulin Resistance Course):
This is the reply from BI:
Thank you for contacting Boehringer Ingelheim Veterinary Technical Services. You raised a very good question that, frankly, took a few days to circulate and find the answer.
The brief answer is, Prascend is the same worldwide. So, as you identified, the language is different from US & UK. No matter US or UK, there is 1.3 mg of pergolide mesylate (the salt) and once metabolized, 1 mg of pergolide.
So, to answer your question below, 1 tablet contains 1 mg of actual pergolide (1.3 mg of pergolide mesylate).
Let us know if you have further questions.
Kerby Weaver, DVM
Technical Service VeterinarianA Boehringer Ingelheim Vetmedica Inc.