Sebastian has been on Prozinc for almost two months now. I've been extremely frustrated with it-- his numbers just aren't as low now as they used to be on Vetsulin. We've been through several different doses, and his pre-shot numbers are always in the high 200s (they were in the high 100s on Vestsulin, and he went a few months with no insulin at all!) Last night his pre-shot number was 298. He got his 1 unit of Prozinc, and we tested him at +4 and he was 140. Is that normal? Scary? We were not able to test him again at +6 because it would have been 1am. We won't be able to run a curve until Sunday. He has just not been as active or playful lately like he was on the Vetsulin. I don't know if it's because it's summer now and the house is kind of hot or if his numbers are just swinging too wildly or what. Or both? I will have more info, of course, this weekend. I don't have a spreadsheet yet. Though he gets tested before every shot and I have a record of that, my husband and I both work full time can't find the time for curves or consistent spot checks. Last night's drop was definitely bigger than we have seen before though, at +4.