I think I may of been blaming the effects of lactose intolerance on metformin. I've had the reaction for a long time, but recently came back from a few days away where I was problem free. Im considering if this is down to the treat of a cooked breakfast while away- meaning I've not had the quantity of milk I normally would have with cereals. Today is my first trial of lactose free milk. I have a doctors appointment away the end of August and will mention it there, but if I'm right it's great news! I read that lactose intolerance increases sugar levels, so I cut that down, it also mens I can probably tolerate more metformin of needed! Anybody have experience of this and advice on what other relevant steps could help?