Fight bacteria with Bacteria:
One of the bacteria found in many yogurt cultures, Lactobacillus gasseri, reduces the amount of damage done to the stomach lining by H. pylori. Unfortunately, the more commonly known strains of Lactobacillus do not share this beneficial effect, so it is necessary to take yogurt or probiotic tablets that are labeled as containing L. gasseri.

Lactobacillus sporogenes is an effective friendly bacteria that has been studied in the treatment of various gastrointestinal disturbances, and supports healthy digestion, offers relief from heartburn, occasional constipation, diarrhea, acid indigestion, abdominal cramps and gastrointestinal discomforts. Lactobacillus acidophilus is a friendly bacteria that exists in the body. Studies indicate that acidophilus may aid in the digestion of milk products, prevent some yeast infections and restore bacterial balance in the intestines. They can also be helpful to travelers and antibiotic-induced diarrhea.

Apple pectin supports healthy digestion, promotes normal elimination, and cleanses the intestinal tract. Slippery Elm Bark helps form a protective barrier against stomach acid and other irritants thus aiding in better digestion. Biotin is essential in carbohydrate metabolism and the synthesis of fatty acids. It is also involved in the transformation of amino acids into protein to replenish a healthy balance of flora, improve health and general well-being.

I found this tablets and they helped me alot with my gastritis:
Maxi Health Chewable Oraldophilus Probiotic Formula -- 100 Tablets

Lactobacillus is pretty much helpful in many ways especially for proper digestion