Just had my normal Metformin scrip replaced with one for Sukkarto 500 mg tabs. I have used Metformin SR 500 for several years, and this last year my readings were regularly in the 4 to 7 mmol/l range for both pre and post prandials, with an overall daily average of 5,8 on my meter. Since this change last week my bgl is now running in the 7 to 11.5 mmol/l range, and the jump for my 2hr PP is often about 4 mmol.l on LCHF diet. So I seem to find the new med is not equivalent to my original med. My daily average is now running st 7.5 which it has not been for over a year. I am wondering if I should yellow card this new med? Edit to add: Just noted that my new scrip has also halved my metformin dose, and whilst this was not normally a problem in the past, it may be adding to the change. Normally Metformin working range is only a couple of points at best, so a 4 point rise is still out of character. I will go back to keto mode to see if this improves things back again. It may be an adjustment of diet is all that is needed, Still it was a bit of a shock, and the air turned blue for a while here at Vartr towers.