About 25 years ago, whilst attending a diabetes check-up, I had my bloods taken and waited outside in the waiting area to be called in by the consultant. During this time I had a really bad hypo, sweating and shakey, and as I had nothing to hand I told the nurse in the clinic. The nurse came out with a big glass of milk and some rich tea biscuits, which I consumed in record time.
Now, it may have been that particular nurses decision alone to use the milk as a hypo treatment (perhaps nothing else was available?) I don't know, but I'll admit that it did bring me back to the land of the living. That said, what Cugila has said in his reply is the recommendation for the treatment of hypo's, and one which I use myself.
I wouldn't recommend using milk as a hypo remedy, far better to stick with the mainstream advice to be safe and sure.
Nigel