This is the kind of unnecessary scary information which can panic the newly diagnosed. For example:
"If symptoms of low blood sugar occur, eat glucose tablets or gel, corn syrup, honey, or sugar cubes; or drink fruit juice, non-diet soft drink, or sugar dissolved in water. Also, check your blood for low blood sugar. Glucagon is used in emergency situations when severe symptoms such as seizures (convulsions) or unconsciousness occur. Have a glucagon kit available, along with a syringe or needle, and know how to use it. The members of your household also should know how to use it."
Well, I'm not on Metformin at the moment (although I may go back to it) but I have never had (or felt the need of) a glucagon kit.
It looks as though the specific information about Metformin has largely been swamped by general information for diabetics who are on a mix of medication including ones which can knock BG right down (such as insulin).
As far as I am aware Metformin on its own does not significantly increase the risk of a Hypo.
Cheers
LGC