Hi AMy- It truly sounds like he has an established ulcer. I am very surprised the vet did not inform yout hat in many many cases it takes up to a month for a full blown ulcer to heal. That means Amoxy & pepto for more than a week!. The sad part is because the treatment was ended you need to start from he beginning again! Sending good thoughts your way.. Alicia D www.ferretwise.org [Posted in FML issue 4498]