H. pylori is the one that causes ulcers. I took the medicine they call "Prevpac" it comes on cards with your pills for the day. It is a combination of Amoxicillin, Clarithromycin, and Prevacid. It took it for 2 weeks. This combo has a better track record in the U.S. than some of the other combo's. If this doesn't get it they will try you on another, but you have to wait several weeks and get a breath test done to see if they are still alive or not. Hope your doc got back to you.