The problem with not testing is that symptoms of low blood glucose can be very similar to high blood glucose and if it is high adding more carbs is not going to helpI am on four Metformin and have been fine, however have had some odd days, so I have worked at upping my carbs. I think I was too low but as I am not testing, my choice, I agree that everyone is different and you need to find a balance for you!!!!!
Sorry if I wasn't clear. When blood glucose drops quite quickly with the dietary changes and medication then it can take a while for the body to get used to lower levels having been high but they may still not be low enough to be considered a 'hypo' it just feels like it. It is referred to as a false hypo. Actual hypos are unlikely with just metformin but could be more likely with gliclazide as that medication is encouraging the pancreas to produce more insulin and if you have not eaten enough carbs to balance that then a hypo is possible.Ah, I didnt quite understand Leading lights explanation. I don't know if my odd sensations are low BG and I know one does not get hypos on Metformin. I might have been just plain old hungry!!