When I was diagnosed with Helicobacter pylori, I was prescribed one antibiotic and one
acid reducer a day for two weeks. My ulcer healed in about 10 days. The antibiotic killed the bacteria that causes H. pylori, but I had to continue with a daily acid reducer. Today, I use Prilosec, 20-mg, and I have no pain. Acid reducers in OTC- form are available everywhere. Antibiotics kill microorganisms, but they also kill the good bacteria that watches over our gut.