Hi I'm having surgery october 17th. I have about 60lbs to lose. My sister had it done about 1 year in the half ago. Her loss was around 60lbs and she lost her weight to me pretty fast like a lot of other people here on the post. Recently she found herself gaining up to 170llbs but decided she did not want to be that heavy after all, so she had a refill done..and I'd say in about 2 weeks she was from 170 to 153lbs. So good luck and I hope that helped.