I've tried to find an answer on here but failed ... sorry if it's already been answered a million rimes. I'm type 2 on Metformin and feel I have it all well under control. I've asked docs and everyone gives a different answer. What are the legal blood lows that say it is illegal to drive? I've been told three four five. I aim to be seven all the time as near as damnit and that's where I am. If I feel very tired I know before testing I will be five or below. At what low can it go before I'm illegal and in fact ... is here a high legal limit?