Malfertheiner et al. (2007) Europe (Maastricht III) PPI (standard dose b.i.d.) Clarithromycin (500 mg b.i.d.) Amoxicillin (1000 mg b.i.d.) or metronidazole (400 mg b.i.d.) 7–14 In populations ...

Amoxicillin begins to work within a few hours after starting the antibiotic. You may start to feel better within 48 to 72 hours. However, you should always finish taking all your prescribed ...