Hi, thanks for your reply. Well, I have come off it and gone back to Novorapid. I had a nasty hypo one day, where it took too long to get my level up. The next days it wasn't doing anything! Literally. I must have stayed at 9 for about 23hrs. And whereas I was always in range overnight, On this I wasn't. Correction doesn do anything. So it's not for me. I'm not going g backwards with my control thankyouvery much!