We use 15mg/5ml. We have a ferret on it for insulinoma - she is not doing so good, though. Her current dose is every 12 hours, 0.3ml. I want some info from ferret owners on the top level reached for them, if possible. My vet does not give a guideline, and he doesn't have a lot of insulinoma patients. Looking up info on the internet gives general doses, saying "as much as 2 to 4mg/kg, but unfortunately they don't mention how often or a daily limit. If you don't use 15mg/5ml that's okay, I will just convert so no worries on math. [Posted in FML 6930]