no. Infacol helps 13 week BF DS to burp and trump more easily, that's it, IMO. I stopped using it for a few weeks and he started waking up with wind etc. whilst feeding, but general feeding behaviour didn't change. I don't use it at every feed, so I am going to watch out for what you are talking about. When my DS rolls his eyes back and zones out whilst feeding, I assume it's because he loves him milk and being cuddled in to his mummy!