With Adam, he got cows milk introduced around a year but he was FF and that was what was advised 8 years ago. With Logan, I waited til he was over a year but all 4 times I gave it to him, he got sick. No testing was done but the ER doctor agreed that he had a milk allergy which he has outgrown but he doesn't like cows milk AT ALL. Xander loves it though. I gave it to him sometime after he turned 1, I don't remember when really but he wanted it so I let him try it and he'll drink it. I don't usually give it to him though because he still nurses a lot so I don't feel he needs it.