Broccoli. A nutrient in broccoli called sulphoraphane has been proven effective by medical research to kill H. pylori bacteria in the stomach lining. It even works at killing strains of H. pylori that have become resistant to antibiotic drugs.[2] And, broccoli sprouts contain 20 to 50 times more sulphoraphane than the mature plant. If you do not like the taste of broccoli, you can purchase broccoli or sulphoraphane supplements online or at your local health food store. Since 50% of the world’s population has H. pylori – even though they may not know it – eating broccoli several times per week or taking supplements is recommended for everyone.