For many, many years I have not been able to drink "normal" milk. I began using a2 a few years back and was thrilled with the result. I was getting to the point I was having to hover near a loo if I just had full milk in a cup of tea. Thanks to a2 I am now able to have a nice, icy cold glass of milk for the first time in my life.
Bottom Line: Yes, I would recommend this to a friend