Hello.
I just received a pm from Sherri ( thx Sherri) and looking at the wild ride you have had so far. I would take a deep breath, keep the dose low and cautious at the 0.5 you shot tonight unless you have a low number under 70 or so at peak, ( lowest point of the insulin ) then you would want to give a little less, and test daily for ketones and switch insulin asap.
it is great Leslie has some lantus to send you.
I used vetsulin, am mod on the vetsulin insulin support group and have been part of the sorting to regulation for many kitties, however, in lights of the fda recalls and the admitted issues with vetsulin, I am loudly encouraging members on vetsulin to make the switch asap.
You would like to get to a gentle holding pattern now while using vetsulin,and then you do need to find a new vet. I am sorry, and this is not to say your vet may not be wonderful in all kinds of ways, but what they could have done to your kitty by giving you 1 unit of R to administer is irresponsible.
Okay, here is the user guide to vetsulin to help you while you are on it...
viewtopic.php?f=19&t=302
Hang in there..you made it through a rough patch-- yay for the board, it is wonderful here--and now you are on the road to being a really knowledgeable and proactive caregiver.
Ask lots of questions
Kimmee