Researchers from Japan and John's Hopkins in Baltimore did a study with 50 Japanese adults infected with Helicobacter Pylori or H. pylori to eat either 2.5 oz. (70 g) of broccoli sprouts which contain Sulforaphane or alfalfa sprouts which do not contain Sulforaphane, every day for two months. (Sulforaphane is found in Moringa)
Those who ate broccoli sprouts saw a greater than 40% reduction in HpSA in their fecal matter. There was no change in HpSA among those who ate alfalfa sprouts.
The HpSA levels returned to pre-treatment levels eight weeks after people stopped eating the broccoli sprouts, suggesting that although they reduce H. pylori colonization, they do not eradicate it.
References
Johns Hopkins Medicine Cancer Prevention Research