We got Sophie when she was about 2. She has vomited a couple of times a week for the last 2 yrs, Usually just foam. Mostly in the AM. I took her to the vet twice and they didnt seem too concerned, recommended food change blah blah. I finally had my husband take her and said to get her scoped, whatever it took to get to the bottom of it. They told him it was prob acid reflux. She would cough a couple of times a day, then do a small gag at the end of the cough. vomit a couple of times a week and she burped a lot. They started her on reglan. (I take reglan too) It has really helped. It has only been about a week, but if you have a pukey dog, you might want to give it a try. I wish we had been more aggressive sooner, because I think all the vomiting has made her teeth bad. Had them cleaned twice in 2 yrs and she lost 9 teeth at the second cleaning. She is good now and her breath is soooooo much better.