Mikaela,  I ran into the same with my CP rx when I switched. Fortunately the pharmacist was super helpful.  I had an RX tbat was 6.6 cp, and I had my vet write 6.6 mg cp from mesylate and that is interpreted as 5mg c pergolide, when in reality I wanted 6.6 c pergolide, which is actually 8.5cp from mesylate. I was able get the correction made pretty quickly and got my RX within the week. Super duper fast! And they had to compound new formulas for me for both Vinnie and Summer. You are not alone :)
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Nancy and Vinnie and Summer
Oakley, Ca
Joined Nov 2018
https://ecir.groups.io/g/CaseHistory/files/Nancy%20and%20Vinnie 
https://ecir.groups.io/g/CaseHistory/album?id=245855

Summer
https://ecir.groups.io/g/CaseHistory/files/Nancy%20and%20Vinnie/Summer 
https://ecir.groups.io/g/CaseHistory/album?id=249104