I can't say whether or not acidophilus liquid will heal your lips. But if you get a white line on your lip that you are tired of wiping off, acidophilus liquid will help prevent the white line from forming. Since acidophilus seems to reduce plaque (bad bacteria) on teeth, I am guessing that the white line was plaque on front surface of teeth that transferred to the lips.
If you never experienced that white line, then maybe your type of EC is not the kind caused by plaque/bacteria. My mouth and teeth always looked clean so you would not think I had a problem with plaque. But any plaque I developed on my tooth surface during the day felt sticky.
I was celebrating this weekend because my lips are finally back to normal. I wish people would believe that this could work. I would be dealing with this problem the rest of my life if I did not give acidophilus liquid a try. And I do not think any dermatologist would think of recommending it to me.