I give 1 unit and then within an hour she becomes lethargic, 1 time earlier this week she could only walk a step of 2 and had to sit and i just now had to pull her out from under my bed as she wasn't even raising her head. before the shot the was playing and acting silly and a bit after she let me brush her. this last one scared the hell out of me. I had honey on my finger for her mouth and fed her some fancy feast pate which is what she eats and now she's curled up in my closet. i also give her an antibiotic at the same time, could that have any effect> we are new to this. i have no home testing materials. when she was first diagnosed 12 days ago her readings were at 383. unfortunately i found a very old school vet and can't afford to find a new one. these episodes with Stella my cat are very scary. She is 8 years old and weighs 11.5 lbs. I give her the shot right after eating.