I don't know if it leaks out or not, but when I went in for my first fill, there was less than 4 cc and that is what he had said he put in. I am very nervous about having some taken out, but I have to admit it was nice to be able to actually eat a meal this afternoon and not go running to the bathroom to slime until my stomach hurt. I have to admit, this will be a test for me..Can I actually continue to eat right...No, wait a minute, I have come too far to fall back now..I love the new me and for the first time in a long time and excited about shopping. I WILL continue to do what I am supposed to do, I will just have to be a little more diligent because I won't have my immediate full tool...=0)